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AbuseIPDB » 42.51.40.99

42.51.40.99 was found in our database!

This IP was reported 149 times. Confidence of Abuse is 100%: ?

100%

ISP	Henan Telcom Union Technology Co., LTD
Usage Type	Data Center/Web Hosting/Transit
ASN	AS56005
Domain Name	htu.cc
Country	🇨🇳 China
City	Zhengzhou, Henan

IP info including ISP, Usage Type, and Location provided by IPInfo. Updated weekly.

Report 42.51.40.99

Whois 42.51.40.99

IP Abuse Reports for 42.51.40.99:

This IP address has been reported a total of 149 times from 121 distinct sources. 42.51.40.99 was first reported on June 28th 2025, and the most recent report was 2 weeks ago.

Old Reports: The most recent abuse report for this IP address is from 2 weeks ago . It is possible that this IP is no longer involved in abusive activities.

Reporter	IoA Timestamp (UTC)	Comment	Categories
🇨🇿 smidra	2026-08-13 14:07:49 (2 weeks ago)	42.51.40.99 brute-forcing ssh logins on Thu Aug 13 04:07:49 PM CEST 2026	Brute-Force SSH
🇩🇪 dom4k	2026-08-12 13:45:06 (3 weeks ago)	2026-08-12T13:45:01.601743+00:00 dom4k.pro sshd[3900599]: Invalid user ubuntu from 42.51.40.99 port ... show more 2026-08-12T13:45:01.601743+00:00 dom4k.pro sshd[3900599]: Invalid user ubuntu from 42.51.40.99 port 36285 2026-08-12T13:45:03.164791+00:00 dom4k.pro sshd[3900604]: Invalid user ubuntu from 42.51.40.99 port 36368 2026-08-12T13:45:05.380486+00:00 dom4k.pro sshd[3900644]: Invalid user ubuntu from 42.51.40.99 port 36418 ... show less	Brute-Force SSH
🇺🇦 venko	2026-08-11 16:26:41 (3 weeks ago)	F2B/SSH	Brute-Force SSH
🇩🇪 www.fransveldman.world	2026-08-11 13:12:18 (3 weeks ago)	Aug 11 13:12:15 mail sshd[1143319]: Invalid user user from 42.51.40.99 port 49516 Aug 11 13:12:17 ma ... show more Aug 11 13:12:15 mail sshd[1143319]: Invalid user user from 42.51.40.99 port 49516 Aug 11 13:12:17 mail sshd[1143321]: Invalid user user from 42.51.40.99 port 49581 ... show less	Brute-Force SSH
🇸🇪 sa0azs	2026-08-11 05:39:17 (3 weeks ago)	Aug 11 07:37:59 OakCottage sshd[7564]: Failed password for root from 42.51.40.99 port 50085 ssh2 Aug ... show more Aug 11 07:37:59 OakCottage sshd[7564]: Failed password for root from 42.51.40.99 port 50085 ssh2 Aug 11 07:39:13 OakCottage sshd[7595]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=42.51.40.99 user=root Aug 11 07:39:15 OakCottage sshd[7595]: Failed password for root from 42.51.40.99 port 55264 ssh2 ... show less	Brute-Force SSH
🇺🇸 989990.xyz	2026-08-11 05:29:40 (3 weeks ago)	2026-08-11T08:59:31.664642+03:30 da-cat sshd[856461]: pam_unix(sshd:auth): authentication failure; l ... show more 2026-08-11T08:59:31.664642+03:30 da-cat sshd[856461]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=42.51.40.99 user=root 2026-08-11T08:59:34.362062+03:30 da-cat sshd[856461]: Failed password for root from 42.51.40.99 port 41609 ssh2 ... show less	Port Scan Hacking Brute-Force Bad Web Bot SSH
🇰🇷 Woodie	2026-08-11 02:51:24 (3 weeks ago)	2026-08-10T22:51:03.346377-04:00 debian sshd[3642931]: Failed password for root from 42.51.40.99 por ... show more 2026-08-10T22:51:03.346377-04:00 debian sshd[3642931]: Failed password for root from 42.51.40.99 port 56749 ssh2 2026-08-10T22:51:11.147005-04:00 debian sshd[3643015]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=42.51.40.99 user=root 2026-08-10T22:51:13.308316-04:00 debian sshd[3643015]: Failed password for root from 42.51.40.99 port 58056 ssh2 2026-08-10T22:51:21.539773-04:00 debian sshd[3643072]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=42.51.40.99 user=root 2026-08-10T22:51:23.742961-04:00 debian sshd[3643072]: Failed password for root from 42.51.40.99 port 58880 ssh2 ... show less	Brute-Force SSH
🇧🇷 helix	2026-08-10 22:13:57 (3 weeks ago)	Automated report: SSH brute force detected. This IP exceeded the allowed number of failed login atte ... show more Automated report: SSH brute force detected. This IP exceeded the allowed number of failed login attempts (3 attempts). show less	Brute-Force SSH
🇬🇧 sandra361	2026-08-10 03:12:31 (3 weeks ago)	Port scan detected: 5 attempts across 1 port (22222). \| Evidence: GHOST_SCAN: IN=enp1s0f0 SRC=42.51. ... show more Port scan detected: 5 attempts across 1 port (22222). \| Evidence: GHOST_SCAN: IN=enp1s0f0 SRC=42.51.40.99 LEN=60 TOS=0x00 PREC=0x00 TTL=41 ID=38107 DF PROTO=TCP SPT=48556 DPT=22222 WINDOW=29200 RES=0x00 SYN URGP=0 show less	Port Scan
🇩🇪 venko	2026-08-09 15:01:25 (3 weeks ago)	F2B/SSH	Brute-Force SSH
🇺🇸 valornode	2026-08-09 15:00:08 (3 weeks ago)	Detected by CrowdSec on web-6405131d: CrowdSec: crowdsecurity/ssh-bf \| ASN: 56005 (Zhengzhou Fastidc ... show more Detected by CrowdSec on web-6405131d: CrowdSec: crowdsecurity/ssh-bf \| ASN: 56005 (Zhengzhou Fastidc Technology Co.,Ltd.) \| Country: CN \| Range: 42.51.0.0/16 show less	Brute-Force SSH
🇺🇸 noelle	2026-08-07 09:19:57 (3 weeks ago)	2026-08-07T02:19:20.832556-07:00 dedi.noelle.bar sshd[2995226]: Failed password for root from 42.51. ... show more 2026-08-07T02:19:20.832556-07:00 dedi.noelle.bar sshd[2995226]: Failed password for root from 42.51.40.99 port 35476 ssh2 2026-08-07T02:19:37.036739-07:00 dedi.noelle.bar sshd[2995251]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=42.51.40.99 user=root 2026-08-07T02:19:39.710869-07:00 dedi.noelle.bar sshd[2995251]: Failed password for root from 42.51.40.99 port 37419 ssh2 2026-08-07T02:19:54.121654-07:00 dedi.noelle.bar sshd[2995271]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=42.51.40.99 user=root 2026-08-07T02:19:56.263909-07:00 dedi.noelle.bar sshd[2995271]: Failed password for root from 42.51.40.99 port 39207 ssh2 ... show less	Brute-Force SSH
🇩🇪 24-seven.io	2026-08-06 21:20:27 (3 weeks ago)	2026-08-06T22:19:49.959748+01:00 srv02 sshd-session[3783394]: Failed password for root from 42.51.40 ... show more 2026-08-06T22:19:49.959748+01:00 srv02 sshd-session[3783394]: Failed password for root from 42.51.40.99 port 59107 ssh2 2026-08-06T22:20:04.338732+01:00 srv02 sshd-session[3783488]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=42.51.40.99 user=root 2026-08-06T22:20:06.596339+01:00 srv02 sshd-session[3783488]: Failed password for root from 42.51.40.99 port 60980 ssh2 2026-08-06T22:20:24.213128+01:00 srv02 sshd-session[3783578]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=42.51.40.99 user=root 2026-08-06T22:20:26.283605+01:00 srv02 sshd-session[3783578]: Failed password for root from 42.51.40.99 port 34320 ssh2 ... show less	Brute-Force SSH
🇮🇹 CoreTech srl	2026-08-05 10:20:28 (4 weeks ago)	[DC: IP:151.1.252.27] ntopng alert: blacklisted_client_contact	Hacking
🇨🇭 flaus	2026-08-05 08:21:39 (4 weeks ago)	$f2bV_matches	Brute-Force SSH

Showing 1 to 15 of 149 reports

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