Botnet Statistics [2025-12-03]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for December 2025.
detection period: 2025-12-03 00:00-23:59 UTC
total number of suspected botnet IPs: 22002
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 20653
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	Network	# of suspected botnet IPs
1	MSFT	1494
2	AL-3	1093
3	GOOGLE-CLOUD	1005
4	PAN-22	947
5	BYTEPLUS-SG	744
6	ASEPL-SG	690
7	CMNET	554
8	VOLCANO-ENGINE	547
9	ALISOFT	442
10	CENSY	377

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	8269
2	China	4455
3	Singapore	1604
4	Hong Kong	479
5	India	429
6	Indonesia	416
7	South Korea	415
8	United Kingdom	394
9	European Union	352
10	Russian Federation	329

Wednesday, December 3, 2025

Botnet Statistics [2025-12-02]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for December 2025.
detection period: 2025-12-02 00:00-23:59 UTC
total number of suspected botnet IPs: 22362
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 20924
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	5900	117720
2	8877	65963
3	7788	64269
4	22	51063
5	5252	43218
6	8422	39323
7	55222	36944
8	2277	25453
9	3233	24870
10	222	24827

Rank	Network	# of suspected botnet IPs
1	MSFT	1512
2	AL-3	1153
3	GOOGLE-CLOUD	1010
4	PAN-22	949
5	BYTEPLUS-SG	742
6	ASEPL-SG	690
7	CLOUDFLARENET	645
8	VOLCANO-ENGINE	543
9	ALISOFT	428
10	CENSY	381

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	9185
2	China	3877
3	Singapore	1690
4	Hong Kong	443
5	India	422
6	United Kingdom	410
7	South Korea	368
8	Indonesia	342
9	Netherlands	335
10	Russian Federation	328

Botnet Statistics [2025-12-01]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for December 2025.
detection period: 2025-12-01 00:00-23:59 UTC
total number of suspected botnet IPs: 21280
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 19835
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	5900	147965
2	8877	64290
3	7788	59434
4	55222	42725
5	3333	40017
6	22	39632
7	8422	39307
8	22112	37933
9	55488	30565
10	2002	26164

Rank	Network	# of suspected botnet IPs
1	MSFT	1484
2	AL-3	1110
3	GOOGLE-CLOUD	1002
4	PAN-22	941
5	BYTEPLUS-SG	750
6	ASEPL-SG	693
7	CLOUDFLARENET	645
8	VOLCANO-ENGINE	554
9	ALISOFT	422
10	CENSY	380

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	8427
2	China	3812
3	Singapore	1615
4	Hong Kong	441
5	India	421
6	United Kingdom	382
7	South Korea	377
8	Germany	339
9	Netherlands	330
10	Indonesia	323

Tuesday, December 2, 2025

Daily Zombie Lists for December 2025（2025年12月，每日殭屍電腦IP清單）

To facilitate security research, I will release the daily zombie IP lists in CSV format here for anyone interested to download. The data columns are defined as follows:

為協助資安方面的研究，我將每日釋出CSV格式的殭屍電腦IP清單，供任何有興趣的人下載。資料欄位定義如下：

Column 1: The date and time in UTC when the last connection attempt (port scans) from the zombie IP (column 2) was detected;

第1欄：該殭屍電腦最後一次被偵測到企圖連線的日期、時間，時區為UTC；

Column 2: Zombie IP;

第2欄：該殭屍電腦的IP位址；

Column 3: TCP destination port number scanned by the zombie.

第3欄：該殭屍電腦所掃描的TCP埠號。

Join the "Suspected Zombie IP List" Telegram channel to get notified when the latest data are ready for download.

想在第一時間取得資料下載網址？請加入Suspected Zombie IP List的Telegram頻道。

Here are the download links of the daily zombie IP lists for December 2025 (without excluding IP addresses of TOR exits and so-called security researchers' nodes.):

以下是2025年12月的每日殭屍電腦IP清單的下載網址(未濾除TOR exit與所謂“資安研究者”的主機IP)：

12/01: download link 下載網址; MD5sum: a62aa3bc64f4ca2fda43c2b23b86d6a5

12/02: download link 下載網址; MD5sum: f507907e2059fc68a42e0b04defbf1bb

12/03: download link 下載網址; MD5sum: d3b04a11f4e6475d6d7894d165fb109d

Monday, December 1, 2025

Botnet Statistics [2025-11-30]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for November 2025.
detection period: 2025-11-30 00:00-23:59 UTC
total number of suspected botnet IPs: 21261
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 19954
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	5900	99337
2	5555	66667
3	3335	39247
4	6262	36855
5	55222	36745
6	8422	32254
7	22	28436
8	2002	28261
9	23	19718
10	7777	18788

Rank	Network	# of suspected botnet IPs
1	MSFT	1506
2	AL-3	1109
3	GOOGLE-CLOUD	1005
4	PAN-22	949
5	BYTEPLUS-SG	752
6	ASEPL-SG	698
7	VOLCANO-ENGINE	560
8	ALISOFT	425
9	CENSY	381
10	LINODE-US	312

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	8657
2	China	3851
3	Singapore	1723
4	Hong Kong	458
5	United Kingdom	396
6	India	371
7	South Korea	349
8	Netherlands	327
9	Brazil	297
10	Germany	296

Sunday, November 30, 2025

Botnet Statistics [2025-11-29]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for November 2025.
detection period: 2025-11-29 00:00-23:59 UTC
total number of suspected botnet IPs: 21538
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 20163
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	5900	116451
2	6262	112280
3	5555	91305
4	22	56366
5	3335	40168
6	55222	38131
7	5588	26862
8	2002	24947
9	5901	23184
10	7777	20818

Rank	Network	# of suspected botnet IPs
1	MSFT	1511
2	AL-3	1102
3	GOOGLE-CLOUD	1006
4	PAN-22	949
5	BYTEPLUS-SG	752
6	ASEPL-SG	697
7	VOLCANO-ENGINE	554
8	ALISOFT	414
9	CENSY	382
10	CMNET	329

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	7933
2	China	4072
3	Singapore	1608
4	India	545
5	Hong Kong	510
6	South Korea	441
7	Russian Federation	388
8	United Kingdom	375
9	Brazil	347
10	Indonesia	327

Saturday, November 29, 2025

Botnet Statistics [2025-11-28]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for November 2025.
detection period: 2025-11-28 00:00-23:59 UTC
total number of suspected botnet IPs: 22634
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 21207
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	5900	110487
2	5555	108141
3	8322	90717
4	6262	89494
5	22	43964
6	7777	31824
7	6622	25925
8	5901	20892
9	13333	20171
10	5588	19412

Rank	Network	# of suspected botnet IPs
1	MSFT	1499
2	AL-3	1110
3	GOOGLE-CLOUD	1008
4	PAN-22	949
5	BYTEPLUS-SG	751
6	ASEPL-SG	741
7	VOLCANO-ENGINE	568
8	ALISOFT	434
9	CMNET	388
10	CENSY	371

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	8488
2	China	4242
3	Singapore	1743
4	India	505
5	Hong Kong	498
6	South Korea	469
7	Brazil	430
8	United Kingdom	386
9	Indonesia	378
10	Russian Federation	370

Friday, November 28, 2025

Botnet Statistics [2025-11-27]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for November 2025.
detection period: 2025-11-27 00:00-23:59 UTC
total number of suspected botnet IPs: 23556
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 22062
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	5555	130263
2	8322	105648
3	5900	100617
4	12222	58553
5	22	41506
6	4444	35930
7	7777	32432
8	6622	26107
9	5901	19928
10	55522	18139

Rank	Network	# of suspected botnet IPs
1	MSFT	1527
2	AL-3	1165
3	GOOGLE-CLOUD	1006
4	PAN-22	949
5	BYTEPLUS-SG	751
6	ASEPL-SG	741
7	VOLCANO-ENGINE	553
8	ALISOFT	458
9	CENSY	381
10	CMNET	366

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	9084
2	China	4805
3	Singapore	1772
4	Hong Kong	497
5	South Korea	461
6	India	420
7	United Kingdom	402
8	Brazil	372
9	Indonesia	365
10	Russian Federation	357

Thursday, November 27, 2025

Botnet Statistics [2025-11-26]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for November 2025.
detection period: 2025-11-26 00:00-23:59 UTC
total number of suspected botnet IPs: 23503
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 21979
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	8322	107619
2	5555	101793
3	5900	96680
4	12222	65738
5	8888	45318
6	22	38483
7	6622	30462
8	3232	26983
9	55522	22202
10	45454	19281

Rank	Network	# of suspected botnet IPs
1	MSFT	1523
2	AL-3	1132
3	GOOGLE-CLOUD	1010
4	PAN-22	946
5	BYTEPLUS-SG	883
6	ASEPL-SG	693
7	VOLCANO-ENGINE	538
8	ALISOFT	424
9	CENSY	375
10	CMNET	352

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	8446
2	China	5193
3	Singapore	1862
4	India	484
5	Hong Kong	471
6	South Korea	447
7	Indonesia	427
8	United Kingdom	397
9	Brazil	377
10	Russian Federation	342

Wednesday, November 26, 2025

Botnet Statistics [2025-11-25]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for November 2025.
detection period: 2025-11-25 00:00-23:59 UTC
total number of suspected botnet IPs: 25833
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 24273
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	5555	120694
2	6622	107702
3	3232	92448
4	5900	82350
5	12222	61785
6	8888	53493
7	11000	36257
8	22	33591
9	8322	30467
10	7021	26522

Rank	Network	# of suspected botnet IPs
1	MSFT	1526
2	AL-3	1115
3	GOOGLE-CLOUD	1012
4	PAN-22	949
5	BYTEPLUS-SG	888
6	ASEPL-SG	692
7	VOLCANO-ENGINE	538
8	CMNET	428
9	ALISOFT	421
10	CENSY	383

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	8950
2	China	5494
3	Singapore	1868
4	India	584
5	South Korea	567
6	Hong Kong	520
7	Brazil	497
8	Indonesia	460
9	Russian Federation	440
10	United Kingdom	417

Tuesday, November 25, 2025

Botnet Statistics [2025-11-24]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for November 2025.
detection period: 2025-11-24 00:00-23:59 UTC
total number of suspected botnet IPs: 25237
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 23493
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	6622	113756
2	5900	85095
3	3232	66514
4	8888	52710
5	5555	51607
6	11000	45578
7	22	28030
8	1433	25118
9	55522	22239
10	28022	20944

Rank	Network	# of suspected botnet IPs
1	MSFT	1515
2	AL-3	1114
3	GOOGLE-CLOUD	996
4	PAN-22	941
5	BYTEPLUS-SG	889
6	ASEPL-SG	707
7	VOLCANO-ENGINE	556
8	CMNET	438
9	ALISOFT	421
10	CENSY	382

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	8187
2	China	5719
3	Singapore	1863
4	India	603
5	South Korea	498
6	Hong Kong	477
7	Brazil	463
8	Russian Federation	446
9	United Kingdom	403
10	Indonesia	393

Monday, November 24, 2025

Botnet Statistics [2025-11-23]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for November 2025.
detection period: 2025-11-23 00:00-23:59 UTC
total number of suspected botnet IPs: 24330
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 22704
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	5900	85836
2	22	45345
3	8888	27652
4	55522	22223
5	5901	21122
6	8122	20960
7	28022	20892
8	23	14713
9	3232	13450
10	8922	12040

Rank	Network	# of suspected botnet IPs
1	MSFT	1526
2	AL-3	1047
3	GOOGLE-CLOUD	1014
4	PAN-22	949
5	BYTEPLUS-SG	889
6	ASEPL-SG	704
7	VOLCANO-ENGINE	551
8	CMNET	432
9	ALISOFT	396
10	CENSY	375

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	8298
2	China	5519
3	Singapore	1901
4	Brazil	582
5	India	546
6	South Korea	486
7	Hong Kong	486
8	Russian Federation	431
9	United Kingdom	418
10	Netherlands	337

Sunday, November 23, 2025

Botnet Statistics [2025-11-22]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for November 2025.
detection period: 2025-11-22 00:00-23:59 UTC
total number of suspected botnet IPs: 24194
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 22549
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	7222	87361
2	5900	84468
3	15620	68907
4	6666	63136
5	8282	55833
6	22	45185
7	8122	40977
8	30023	26109
9	8888	25039
10	28022	20874

Rank	Network	# of suspected botnet IPs
1	MSFT	1493
2	AL-3	1068
3	GOOGLE-CLOUD	1008
4	PAN-22	948
5	BYTEPLUS-SG	890
6	ASEPL-SG	693
7	VOLCANO-ENGINE	545
8	CMNET	416
9	ALISOFT	409
10	CENSY	379

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	8194
2	China	5370
3	Singapore	1872
4	India	560
5	Brazil	523
6	Hong Kong	513
7	South Korea	495
8	Russian Federation	456
9	Indonesia	385
10	United Kingdom	384

Saturday, November 22, 2025

Botnet Statistics [2025-11-21]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for November 2025.
detection period: 2025-11-21 00:00-23:59 UTC
total number of suspected botnet IPs: 24806
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 23066
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	6666	99128
2	7222	96403
3	6003	66702
4	22	66542
5	5900	65058
6	8282	58385
7	8122	40131
8	1993	39057
9	7722	37379
10	8888	32448

Rank	Network	# of suspected botnet IPs
1	MSFT	1419
2	AL-3	1092
3	GOOGLE-CLOUD	1011
4	PAN-22	952
5	BYTEPLUS-SG	888
6	ASEPL-SG	739
7	VOLCANO-ENGINE	550
8	CMNET	480
9	ALISOFT	399
10	CENSY	382

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	7923
2	China	5931
3	Singapore	1902
4	India	649
5	Brazil	638
6	South Korea	489
7	Hong Kong	485
8	Russian Federation	462
9	Indonesia	427
10	United Kingdom	343

Friday, November 21, 2025

Botnet Statistics [2025-11-20]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for November 2025.
detection period: 2025-11-20 00:00-23:59 UTC
total number of suspected botnet IPs: 25936
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 24152
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	7722	122908
2	7222	108272
3	6666	104101
4	5900	82528
5	22	52129
6	8122	43904
7	8282	42273
8	1993	39105
9	8888	35442
10	30023	31634

Rank	Network	# of suspected botnet IPs
1	MSFT	1216
2	AL-3	1090
3	GOOGLE-CLOUD	1022
4	PAN-22	951
5	BYTEPLUS-SG	828
6	ASEPL-SG	724
7	VOLCANO-ENGINE	532
8	CMNET	483
9	ALISOFT	398
10	COGENT-A	382

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	8739
2	China	6280
3	Singapore	1759
4	India	680
5	Brazil	552
6	Indonesia	527
7	Hong Kong	497
8	Russian Federation	474
9	South Korea	471
10	Germany	358

Thursday, November 20, 2025

Botnet Statistics [2025-11-19]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for November 2025.
detection period: 2025-11-19 00:00-23:59 UTC
total number of suspected botnet IPs: 25162
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 23235
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	7722	124401
2	6666	104982
3	5900	86053
4	2026	52272
5	4122	48611
6	1993	39065
7	22	38798
8	2002	35025
9	6222	29289
10	5901	21299

Rank	Network	# of suspected botnet IPs
1	MSFT	1556
2	AL-3	1073
3	GOOGLE-CLOUD	1006
4	PAN-22	951
5	BYTEPLUS-SG	859
6	ASEPL-SG	724
7	VOLCANO-ENGINE	571
8	CMNET	476
9	ALISOFT	395
10	CENSY	384

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	8424
2	China	5348
3	Singapore	1887
4	India	660
5	Brazil	569
6	Indonesia	544
7	Hong Kong	522
8	South Korea	483
9	Russian Federation	466
10	United Kingdom	363

Wednesday, November 19, 2025

Botnet Statistics [2025-11-18]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for November 2025.
detection period: 2025-11-18 00:00-23:59 UTC
total number of suspected botnet IPs: 22187
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 20760
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	6666	108044
2	5900	78362
3	7722	70296
4	22	40637
5	5901	21189
6	2026	17488
7	1433	16260
8	2874	15740
9	6002	13769
10	4122	13712

Rank	Network	# of suspected botnet IPs
1	MSFT	1522
2	AL-3	1023
3	GOOGLE-CLOUD	1011
4	PAN-22	951
5	ASEPL-SG	700
6	VOLCANO-ENGINE	524
7	CMNET	475
8	ALISOFT	405
9	CENSY	382
10	KORNET-KR	292

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	8265
2	China	5220
3	Singapore	1184
4	India	542
5	Hong Kong	491
6	South Korea	479
7	Russian Federation	415
8	United Kingdom	340
9	Indonesia	323
10	European Union	312

Tuesday, November 18, 2025

Botnet Statistics [2025-11-17]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for November 2025.
detection period: 2025-11-17 00:00-23:59 UTC
total number of suspected botnet IPs: 21834
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 20361
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	6666	106980
2	5900	78676
3	22	48037
4	1411	38682
5	4422	30463
6	5901	20955
7	2211	15324
8	5903	13483
9	2022	13182
10	5905	13073

Rank	Network	# of suspected botnet IPs
1	MSFT	1548
2	AL-3	1061
3	GOOGLE-CLOUD	1003
4	PAN-22	952
5	ASEPL-SG	714
6	VOLCANO-ENGINE	530
7	CMNET	508
8	ALISOFT	416
9	CENSY	376
10	BYTEPLUS-SG	286

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	7803
2	China	4945
3	Singapore	1278
4	India	592
5	South Korea	479
6	Hong Kong	477
7	Russian Federation	428
8	Indonesia	377
9	Brazil	338
10	United Kingdom	328

Monday, November 17, 2025

Botnet Statistics [2025-11-16]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for November 2025.
detection period: 2025-11-16 00:00-23:59 UTC
total number of suspected botnet IPs: 21254
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 19890
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	5900	172598
2	6666	107717
3	1411	50375
4	22	43801
5	4422	42867
6	6000	42257
7	7037	37431
8	5222	26583
9	5901	20317
10	10038	19801

Rank	Network	# of suspected botnet IPs
1	MSFT	1539
2	AL-3	1059
3	GOOGLE-CLOUD	1012
4	PAN-22	959
5	ASEPL-SG	706
6	VOLCANO-ENGINE	519
7	CMNET	460
8	ALISOFT	419
9	CENSY	372
10	KORNET-KR	340

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	8304
2	China	4445
3	Singapore	1221
4	South Korea	534
5	India	515
6	Hong Kong	467
7	Russian Federation	403
8	United Kingdom	336
9	European Union	294
10	Indonesia	277

Sunday, November 16, 2025

Botnet Statistics [2025-11-15]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for November 2025.
detection period: 2025-11-15 00:00-23:59 UTC
total number of suspected botnet IPs: 23058
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 21503
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	5900	250233
2	6700	91826
3	4120	73075
4	20300	49134
5	15920	48849
6	22	42808
7	4422	42531
8	6000	41474
9	1411	33050
10	6666	27474

Rank	Network	# of suspected botnet IPs
1	MSFT	1575
2	AL-3	1087
3	GOOGLE-CLOUD	1013
4	PAN-22	958
5	ASEPL-SG	717
6	CLOUDFLARENET	655
7	VOLCANO-ENGINE	530
8	CMNET	501
9	KORNET-KR	450
10	ALISOFT	439

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	8806
2	China	4753
3	Singapore	1285
4	South Korea	678
5	India	585
6	Hong Kong	489
7	Russian Federation	409
8	United Kingdom	349
9	Indonesia	336
10	Germany	318

Saturday, November 15, 2025

Botnet Statistics [2025-11-14]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for November 2025.
detection period: 2025-11-14 00:00-23:59 UTC
total number of suspected botnet IPs: 22705
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 21079
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	5900	294300
2	4224	77163
3	1411	50179
4	22	40566
5	8300	28461
6	23	28048
7	4722	27703
8	3900	24557
9	15900	21867
10	21620	21322

Rank	Network	# of suspected botnet IPs
1	MSFT	1548
2	AL-3	1068
3	GOOGLE-CLOUD	1013
4	PAN-22	959
5	BYTEPLUS-SG	876
6	ASEPL-SG	709
7	VOLCANO-ENGINE	522
8	CMNET	503
9	ALISOFT	431
10	CENSY	380

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	8039
2	China	4689
3	Singapore	1769
4	India	619
5	Hong Kong	505
6	Russian Federation	478
7	South Korea	473
8	Indonesia	374
9	United Kingdom	357
10	Brazil	330

Friday, November 14, 2025

Botnet Statistics [2025-11-13]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for November 2025.
detection period: 2025-11-13 00:00-23:59 UTC
total number of suspected botnet IPs: 24017
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 22388
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	5900	301150
2	4224	116308
3	1411	53485
4	22	32706
5	1995	26938
6	5432	15849
7	5901	14621
8	1433	12471
9	23	10465
10	2223	10314

Rank	Network	# of suspected botnet IPs
1	MSFT	1568
2	AL-3	1098
3	GOOGLE-CLOUD	1021
4	PAN-22	962
5	BYTEPLUS-SG	876
6	ASEPL-SG	760
7	VOLCANO-ENGINE	524
8	CMNET	522
9	ALISOFT	438
10	CENSY	383

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	8732
2	China	4877
3	Singapore	1906
4	India	622
5	Hong Kong	505
6	Russian Federation	490
7	South Korea	477
8	Indonesia	414
9	United Kingdom	392
10	Brazil	371

Thursday, November 13, 2025

Botnet Statistics [2025-11-12]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for November 2025.
detection period: 2025-11-12 00:00-23:59 UTC
total number of suspected botnet IPs: 22862
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 21299
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	5900	382637
2	1995	66963
3	1411	53516
4	12020	30118
5	22	27666
6	445	16571
7	5901	15377
8	1433	13524
9	2222	11881
10	23	10628

Rank	Network	# of suspected botnet IPs
1	MSFT	1567
2	AL-3	1097
3	GOOGLE-CLOUD	1010
4	PAN-22	961
5	BYTEPLUS-SG	874
6	ASEPL-SG	723
7	VOLCANO-ENGINE	532
8	CMNET	503
9	ALISOFT	453
10	CENSY	381

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	7928
2	China	4933
3	Singapore	1800
4	India	535
5	Hong Kong	494
6	South Korea	455
7	Russian Federation	444
8	Indonesia	398
9	Germany	355
10	United Kingdom	347

Wednesday, November 12, 2025

Botnet Statistics [2025-11-11]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for November 2025.
detection period: 2025-11-11 00:00-23:59 UTC
total number of suspected botnet IPs: 23370
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 21727
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	5900	378046
2	1995	67056
3	22	49882
4	1411	42154
5	8888	36347
6	1433	21022
7	3322	20508
8	25322	17505
9	522	16704
10	3333	15357

Rank	Network	# of suspected botnet IPs
1	MSFT	1551
2	AL-3	1210
3	GOOGLE-CLOUD	1013
4	PAN-22	964
5	BYTEPLUS-SG	870
6	ASEPL-SG	771
7	VOLCANO-ENGINE	529
8	CMNET	485
9	ALISOFT	426
10	CENSY	384

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	8471
2	China	4801
3	Singapore	1873
4	India	526
5	Hong Kong	476
6	Russian Federation	444
7	South Korea	429
8	Indonesia	413
9	United Kingdom	367
10	Brazil	364

Tuesday, November 11, 2025

Botnet Statistics [2025-11-10]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for November 2025.
detection period: 2025-11-10 00:00-23:59 UTC
total number of suspected botnet IPs: 21653
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 20121
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	5900	477869
2	8888	95433
3	3322	54832
4	1411	46031
5	7722	38624
6	3333	28497
7	22	26361
8	2122	18363
9	5432	17579
10	5901	14833

Rank	Network	# of suspected botnet IPs
1	MSFT	1554
2	AL-3	1230
3	GOOGLE-CLOUD	1013
4	PAN-22	964
5	BYTEPLUS-SG	870
6	ASEPL-SG	775
7	VOLCANO-ENGINE	534
8	ALISOFT	444
9	CMNET	407
10	CENSY	379

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	7849
2	China	4667
3	Singapore	1819
4	Hong Kong	508
5	India	426
6	Indonesia	426
7	United Kingdom	361
8	South Korea	341
9	Russian Federation	335
10	Brazil	304

Monday, November 10, 2025

Botnet Statistics [2025-11-09]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for November 2025.
detection period: 2025-11-09 00:00-23:59 UTC
total number of suspected botnet IPs: 23381
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 21819
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	5900	433636
2	8888	96063
3	1411	53606
4	22	29964
5	3322	19557
6	2223	17360
7	5432	16700
8	5901	15444
9	1433	14292
10	3333	14041

Rank	Network	# of suspected botnet IPs
1	MSFT	1566
2	AL-3	1233
3	GOOGLE-CLOUD	1015
4	PAN-22	950
5	BYTEPLUS-SG	871
6	ASEPL-SG	768
7	VOLCANO-ENGINE	548
8	CMNET	497
9	ALISOFT	429
10	CENSY	379

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	8418
2	China	4936
3	Singapore	1798
4	India	553
5	Hong Kong	552
6	South Korea	491
7	Russian Federation	477
8	United Kingdom	393
9	Brazil	337
10	Indonesia	332

Sunday, November 9, 2025

Botnet Statistics [2025-11-08]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for November 2025.
detection period: 2025-11-08 00:00-23:59 UTC
total number of suspected botnet IPs: 22808
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 21206
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	5900	418898
2	1996	108520
3	8888	97237
4	1411	53622
5	4460	46608
6	22	37497
7	58755	23427
8	5901	16935
9	5432	15315
10	8022	14144

Rank	Network	# of suspected botnet IPs
1	MSFT	1552
2	AL-3	1231
3	GOOGLE-CLOUD	1018
4	PAN-22	950
5	ASEPL-SG	776
6	BYTEPLUS-SG	770
7	VOLCANO-ENGINE	535
8	CMNET	514
9	ALISOFT	429
10	CENSY	380

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	7888
2	China	4611
3	Singapore	1727
4	India	591
5	Hong Kong	566
6	Brazil	558
7	Russian Federation	481
8	South Korea	470
9	United Kingdom	384
10	Indonesia	362

Saturday, November 8, 2025

Botnet Statistics [2025-11-07]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for November 2025.
detection period: 2025-11-07 00:00-23:59 UTC
total number of suspected botnet IPs: 23567
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 21817
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	5900	276305
2	8888	97342
3	1411	53569
4	1996	45283
5	147	39580
6	9000	37765
7	22	33989
8	2223	28759
9	5555	26329
10	19998	22622

Rank	Network	# of suspected botnet IPs
1	MSFT	1558
2	AL-3	1228
3	GOOGLE-CLOUD	1014
4	PAN-22	951
5	ASEPL-SG	774
6	BYTEPLUS-SG	768
7	CMNET	533
8	VOLCANO-ENGINE	530
9	ALISOFT	440
10	CENSY	384

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	8131
2	China	4618
3	Singapore	1713
4	Brazil	688
5	India	653
6	Hong Kong	569
7	Russian Federation	484
8	South Korea	476
9	Indonesia	462
10	United Kingdom	381

Friday, November 7, 2025

Botnet Statistics [2025-11-06]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for November 2025.
detection period: 2025-11-06 00:00-23:59 UTC
total number of suspected botnet IPs: 24447
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 22691
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	5900	323829
2	8888	97519
3	56874	62629
4	1411	53614
5	54298	40808
6	22	37640
7	8358	29162
8	1433	29102
9	91	26299
10	2026	22042

Rank	Network	# of suspected botnet IPs
1	MSFT	1556
2	AL-3	1212
3	GOOGLE-CLOUD	1026
4	PAN-22	951
5	BYTEPLUS-SG	800
6	ASEPL-SG	773
7	CMNET	562
8	VOLCANO-ENGINE	529
9	ALISOFT	409
10	UCLOUD-HK	385

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	8697
2	China	4622
3	Singapore	1764
4	Brazil	677
5	India	644
6	Hong Kong	633
7	Russian Federation	530
8	South Korea	489
9	Indonesia	471
10	United Kingdom	394

Thursday, November 6, 2025

Botnet Statistics [2025-11-05]

(To download the latest zombie ip list, please visit the Daily Zombie IP Lists for November 2025.
detection period: 2025-11-05 00:00-23:59 UTC
total number of suspected botnet IPs: 24275
number of botnet IPs notified to network operators (best case, if all mail were sent out successfully): 22485
number of spam blocked: 0
recipient count of spam blocked: 0

The top 10 networks (as found in WHOIS), ordered by the number of suspected botnet IPs are:

Rank	TCP port number	# of connection attempts received
1	5900	444849
2	56874	66844
3	932	65715
4	1411	53650
5	7000	40963
6	8888	39919
7	2026	27455
8	9999	26268
9	22	24088
10	91	22221

Rank	Network	# of suspected botnet IPs
1	MSFT	1536
2	AL-3	1219
3	GOOGLE-CLOUD	1011
4	PAN-22	950
5	ASEPL-SG	783
6	CMNET	667
7	VOLCANO-ENGINE	536
8	ALISOFT	417
9	UCLOUD-HK	403
10	CENSY	382

The top 10 countries (as defined by the 2-character country code), ordered by the number of suspected botnet IPs are:

The top 10 TCP ports, ordered by the number of connection attempts received are:

Rank	Country/Region	# of suspected botnet IPs
1	United States	8253
2	China	4842
3	Singapore	1079
4	Brazil	743
5	India	678
6	Hong Kong	643
7	Russian Federation	545
8	South Korea	498
9	Indonesia	485
10	United Kingdom	386

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About Botnet Tracker

Chih-Cherng Chin

Taiwan

I submitted a paper titled "Follow the spam: a botnet detection and notification mechanism" (in Chinese) to this year's TANET conference (TANET 2010), and it has been accepted. In that paper, I pointed out the problem with botnet mitigation measures which focus on taking C&C servers offline, described the detection strategy of "follow the spam," and made a general sketch of how I detect and report botnets. So far I have only implemented half of the "follow the spam" strategy. Hope someone else will implement the other half.

My previous work was an open relay detection and notification system (presented at TANET 2006 conference), which was able to uncover more than 1200 open relays (confirmed by ORDB) each month at the time.

View my complete profile

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Rank	TCP port number	# of connection attempts received
1	5900	369254
2	56874	61960
3	370	52329
4	1411	51025
5	3610	36168
6	22	22909
7	322	19380
8	23	19367
9	1433	14738
10	5432	13855