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154.51.243.12

Recent Activity

Abuse Confidence Score

100% Critical

49 reports

42 reporters · latest 13 minutes ago

ISP: Cogent Communications, LLC
Usage Type: Data Center/Web Hosting/Transit
ASN: AS135377
Domain Name: cogentco.com
Country: 🇺🇸 United States of America
City: Los Angeles, California

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

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Abuse Reports

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Total reports

49 from 42 distinct reporters

First reported

November 3rd 2026

Most recent report

13 minutes ago

Last 60 days

Top reporter locations 🇩🇪 Germany 11 🇺🇸 United States of America 9 🇳🇱 Netherlands 6

Most common categories Brute-Force 47 SSH 45 Port Scan 4 Web App Attack 2 Bad Web Bot 2

Recent reports We have received reports of abusive activity from this IP address within the last week. It is potentially still actively engaged in abusive activities.

Reporter	IoA Timestamp (UTC)	Comment	Categories
🇪🇸 librebit	2026-11-14 01:23:45 UTC · (13 minutes ago)	Knockin' on Heaven's Door, SSH known crap	Brute-Force SSH
🇩🇪 rd1742	2026-11-14 01:20:45 UTC · (16 minutes ago)	2026-11-14 01:20:43,736 pat proftpd[1228941] pat.webnmail.de (154.51.243.12[154.51.243.12]): USER root: no such user found from 154.51.243.12 [154.51.243.12] to 152.53.204.89:22 2026-11-14 01:20:45,655 pat proftpd[1228942] pat.webnmail.de (154.51.243 ... show more 2026-11-14 01:20:43,736 pat proftpd[1228941] pat.webnmail.de (154.51.243.12[154.51.243.12]): USER root: no such user found from 154.51.243.12 [154.51.243.12] to 152.53.204.89:22 2026-11-14 01:20:45,655 pat proftpd[1228942] pat.webnmail.de (154.51.243.12[154.51.243.12]): USER root: no such user found from 154.51.243.12 [154.51.243.12] to 152.53.204.89:22 ... show less	Brute-Force SSH
🇳🇱 hostero	2026-11-13 20:36:02 UTC · (5 hours ago)	2026-11-13T21:35:53.802109+01:00 s1149 sshd[278358]: Failed password for root from 154.51.243.12 port 53600 ssh2 2026-11-13T21:35:59.559584+01:00 s1149 sshd[278365]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rh ... show more 2026-11-13T21:35:53.802109+01:00 s1149 sshd[278358]: Failed password for root from 154.51.243.12 port 53600 ssh2 2026-11-13T21:35:59.559584+01:00 s1149 sshd[278365]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=154.51.243.12 user=root 2026-11-13T21:36:01.326658+01:00 s1149 sshd[278365]: Failed password for root from 154.51.243.12 port 53606 ssh2 ... show less	Brute-Force SSH
🇸🇪 sa0azs	2026-11-13 20:36:01 UTC · (5 hours ago)	2026-11-13T21:35:49.629174+01:00 ErrolFlynn sshd-session[2696]: Failed password for root from 154.51.243.12 port 54154 ssh2 2026-11-13T21:35:57.866169+01:00 ErrolFlynn sshd-session[2701]: pam_unix(sshd:auth): authentication failure; logname= uid=0 eu ... show more 2026-11-13T21:35:49.629174+01:00 ErrolFlynn sshd-session[2696]: Failed password for root from 154.51.243.12 port 54154 ssh2 2026-11-13T21:35:57.866169+01:00 ErrolFlynn sshd-session[2701]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=154.51.243.12 user=root 2026-11-13T21:35:59.257662+01:00 ErrolFlynn sshd-session[2701]: Failed password for root from 154.51.243.12 port 45772 ssh2 ... show less	Brute-Force SSH
🇩🇪 ghostwarriors	2026-11-13 18:50:29 UTC · (6 hours ago)	Unauthorized connection attempt detected, SSH Brute-Force	Brute-Force Port Scan SSH
🇧🇷 radardatelecom	2026-11-13 16:55:05 UTC · (8 hours ago)	Blocked by Radar da Telecom firewall — abuseipdb	Bad Web Bot Web App Attack
🇺🇸 onemightyarc	2026-11-13 15:26:29 UTC · (10 hours ago)	2026-11-13T08:26:24.178384-07:00 server.vexstria.pro sshd[3838080]: Failed password for root from 154.51.243.12 port 40884 ssh2 2026-11-13T08:26:27.079638-07:00 server.vexstria.pro sshd[3839887]: pam_unix(sshd:auth): authentication failure; logname= ... show more 2026-11-13T08:26:24.178384-07:00 server.vexstria.pro sshd[3838080]: Failed password for root from 154.51.243.12 port 40884 ssh2 2026-11-13T08:26:27.079638-07:00 server.vexstria.pro sshd[3839887]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=154.51.243.12 user=root 2026-11-13T08:26:29.235286-07:00 server.vexstria.pro sshd[3839887]: Failed password for root from 154.51.243.12 port 40900 ssh2 ... show less	Brute-Force SSH Port Scan FTP Brute-Force
🇧🇷 smilehost.com.br	2026-11-13 15:17:08 UTC · (10 hours ago)	2026-11-13T11:16:35.825544-04:00 server3.dr2.site sshd-session[3984823]: Failed password for root from 154.51.243.12 port 39240 ssh2 2026-11-13T11:16:38.827502-04:00 server3.dr2.site sshd-session[3984967]: pam_unix(sshd:auth): authentication failure; ... show more 2026-11-13T11:16:35.825544-04:00 server3.dr2.site sshd-session[3984823]: Failed password for root from 154.51.243.12 port 39240 ssh2 2026-11-13T11:16:38.827502-04:00 server3.dr2.site sshd-session[3984967]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=154.51.243.12 user=root 2026-11-13T11:16:40.984582-04:00 server3.dr2.site sshd-session[3984967]: Failed password for root from 154.51.243.12 port 39244 ssh2 2026-11-13T11:16:45.702578-04:00 server3.dr2.site sshd-session[3984998]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=154.51.243.12 user=root 2026-11-13T11:16:47.142533-04:00 server3.dr2.site sshd-session[3984998]: Failed password for root from 154.51.243.12 port 44790 ssh2 ... show less	Brute-Force SSH
🇫🇮 Phish.gg	2026-11-13 13:37:30 UTC · (11 hours ago)	Nov 13 13:37:03 obsidian sshd[1928637]: Failed password for root from 154.51.243.12 port 37762 ssh2 Nov 13 13:37:27 obsidian sshd[1929184]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=154.51.243.12 user=ro ... show more Nov 13 13:37:03 obsidian sshd[1928637]: Failed password for root from 154.51.243.12 port 37762 ssh2 Nov 13 13:37:27 obsidian sshd[1929184]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=154.51.243.12 user=root Nov 13 13:37:29 obsidian sshd[1929184]: Failed password for root from 154.51.243.12 port 45090 ssh2 ... show less	Brute-Force SSH
🇫🇷 mouafiq	2026-11-13 12:05:39 UTC · (13 hours ago)	Nov 13 13:05:30 vps789833 sshd[2371]: Failed password for root from 154.51.243.12 port 36064 ssh2 Nov 13 13:05:36 vps789833 sshd[2373]: Failed password for root from 154.51.243.12 port 56556 ssh2	Brute-Force SSH
🇸🇪 wrecker1602	2026-11-13 11:19:46 UTC · (14 hours ago)	2026-11-13T11:19:39.138041+00:00 WreckersBox sshd[61647]: Failed password for root from 154.51.243.12 port 36520 ssh2 2026-11-13T11:19:43.146651+00:00 WreckersBox sshd[61649]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ... show more 2026-11-13T11:19:39.138041+00:00 WreckersBox sshd[61647]: Failed password for root from 154.51.243.12 port 36520 ssh2 2026-11-13T11:19:43.146651+00:00 WreckersBox sshd[61649]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=154.51.243.12 user=root 2026-11-13T11:19:44.969797+00:00 WreckersBox sshd[61649]: Failed password for root from 154.51.243.12 port 48690 ssh2 ... show less	Brute-Force SSH
🇷🇺 EndCore Group	2026-11-12 20:56:13 UTC · (1 day ago)	2026-11-12T20:56:04.250036+00:00 funtv73228.serv.host sshd[720075]: Failed password for root from 154.51.243.12 port 36698 ssh2 2026-11-12T20:56:10.189807+00:00 funtv73228.serv.host sshd[720077]: pam_unix(sshd:auth): authentication failure; logname= ... show more 2026-11-12T20:56:04.250036+00:00 funtv73228.serv.host sshd[720075]: Failed password for root from 154.51.243.12 port 36698 ssh2 2026-11-12T20:56:10.189807+00:00 funtv73228.serv.host sshd[720077]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=154.51.243.12 user=root 2026-11-12T20:56:11.992553+00:00 funtv73228.serv.host sshd[720077]: Failed password for root from 154.51.243.12 port 41522 ssh2 ... show less	Brute-Force SSH
🇧🇬 OHOST.BG	2026-11-12 20:16:35 UTC · (1 day ago)	Nov 12 22:16:23 mirrors sshd[3934703]: Failed password for root from 154.51.243.12 port 59894 ssh2 Nov 12 22:16:27 mirrors sshd[3934906]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=154.51.243.12 user=root ... show more Nov 12 22:16:23 mirrors sshd[3934703]: Failed password for root from 154.51.243.12 port 59894 ssh2 Nov 12 22:16:27 mirrors sshd[3934906]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=154.51.243.12 user=root Nov 12 22:16:28 mirrors sshd[3934906]: Failed password for root from 154.51.243.12 port 59896 ssh2 Nov 12 22:16:32 mirrors sshd[3935009]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=154.51.243.12 user=root Nov 12 22:16:34 mirrors sshd[3935009]: Failed password for root from 154.51.243.12 port 45240 ssh2 ... show less	Brute-Force SSH
🇵🇱 EndCore Group	2026-11-12 19:48:14 UTC · (1 day ago)	2026-11-12T19:48:05.394671polandend.hostes.io sshd[20489]: Failed password for root from 154.51.243.12 port 35540 ssh2 2026-11-12T19:48:11.002238polandend.hostes.io sshd[20492]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=s ... show more 2026-11-12T19:48:05.394671polandend.hostes.io sshd[20489]: Failed password for root from 154.51.243.12 port 35540 ssh2 2026-11-12T19:48:11.002238polandend.hostes.io sshd[20492]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=154.51.243.12 user=root 2026-11-12T19:48:13.026621polandend.hostes.io sshd[20492]: Failed password for root from 154.51.243.12 port 35544 ssh2 ... show less	Brute-Force SSH
🇺🇸 kosada.com	2026-11-12 17:52:00 UTC · (1 day ago)	Repeated failed login attempts, for example: srclimit_penalise: 154.51.243.12/32: activating ipv4 penalty of 15.810 seconds for penalty: failed authentication (SSH port 22)	Brute-Force SSH

Showing 1 to 15 of 49 reports

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