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AbuseIPDB » 51.255.75.91

51.255.75.91 was found in our database!

This IP was reported 42 times. Confidence of Abuse is 80%: ?

80%

ISP	OVH SAS
Usage Type	Data Center/Web Hosting/Transit
ASN	AS16276
Hostname(s)	agence-numerique-chablais.com
Domain Name	ovh.net
Country	🇫🇷 France
City	Dunkirk, Hauts-de-France

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

Report 51.255.75.91

Whois 51.255.75.91

IP Abuse Reports for 51.255.75.91:

This IP address has been reported a total of 42 times from 27 distinct sources. 51.255.75.91 was first reported on January 29th 2021, and the most recent report was 1 week ago.

Old Reports: The most recent abuse report for this IP address is from 1 week ago . It is possible that this IP is no longer involved in abusive activities.

Reporter	IoA Timestamp (UTC)	Comment	Categories
🇸🇮 administrator	2026-06-26 22:03:15 (1 week ago)	2026-06-22 00:02:18,516 fail2ban.actions [1112]: NOTICE [dovecot] Ban 51.255.75.91 2026-06-2 ... show more 2026-06-22 00:02:18,516 fail2ban.actions [1112]: NOTICE [dovecot] Ban 51.255.75.91 2026-06-23 00:05:55,520 fail2ban.actions [1403250]: NOTICE [pam-generic] Ban 51.255.75.91 2026-06-22 00:02:18,516 fail2ban.actions [1112]: NOTICE [dovecot] Ban 51.255.75.91 ... show less	Bad Web Bot Web Spam Email Spam Blog Spam Port Scan Brute-Force Web App Attack
🇩🇪 ecs.ge	2026-06-26 09:24:45 (1 week ago)	Automatic Fail2Ban report from jail plesk-dovecot: multiple matching events detected.	Brute-Force
🇬🇧 andypiper	2026-06-19 01:00:49 (2 weeks ago)	CrowdSec ban for AbuseIPDB Top List	Brute-Force Web App Attack
🇫🇷 ✨	2026-06-19 00:40:17 (2 weeks ago)	Rule : POP 06/19/26 06:08:49 POPS 1624 51.255.75.91 OK Welcome to MailEnable POP3 Server 39 0 ... show more Rule : POP 06/19/26 06:08:49 POPS 1624 51.255.75.91 OK Welcome to MailEnable POP3 Server 39 0 06/19/26 06:08:49 POPS 1624 51.255.75.91 USER USER [email protected] OK 5 25 06/19/26 06:08:49 POPS 1624 51.255.75.91 PASS PASS * -ERR Unable to log on 23 21 show less	Port Scan Spoofing
🇳🇱 Godert Jan van Manen	2026-06-18 23:44:06 (2 weeks ago)	Jun 19 01:41:25 odin dovecot: auth-worker(13141): sql([email protected],51.255.75.91,<GQLato9UZog ... show more Jun 19 01:41:25 odin dovecot: auth-worker(13141): sql([email protected],51.255.75.91,<GQLato9UZogz/0tb>): unknown user Jun 19 01:41:27 odin dovecot: pop3-login: Disconnected (auth failed, 1 attempts in 2 secs): user=<[email protected]>, method=PLAIN, rip=51.255.75.91, lip=178.162.131.122, session=<GQLato9UZogz/0tb> Jun 19 01:41:57 odin dovecot: auth-worker(13141): sql([email protected],51.255.75.91,<eK/PuI9U8poz/0tb>): unknown user Jun 19 01:41:59 odin dovecot: pop3-login: Disconnected (auth failed, 1 attempts in 2 secs): user=<[email protected]>, method=PLAIN, rip=51.255.75.91, lip=178.162.131.122, session=<eK/PuI9U8poz/0tb> Jun 19 01:44:06 odin dovecot: auth-worker(13141): sql([email protected],51.255.75.91,<tIp1wI9UkNQz/0tb>): unknown user show less	Brute-Force
🇸🇬 drewf.ink	2026-06-18 23:15:16 (2 weeks ago)	[23:15] Port scanning. Port(s) scanned: TCP/110	Port Scan
🇫🇷 ✨	2026-06-18 23:07:18 (2 weeks ago)	Rule : POP 06/18/26 18:05:00 POPS 1464 51.255.75.91 OK Welcome to MailEnable POP3 Server 39 0 ... show more Rule : POP 06/18/26 18:05:00 POPS 1464 51.255.75.91 OK Welcome to MailEnable POP3 Server 39 0 06/18/26 18:05:00 POPS 1464 51.255.75.91 USER USER [email protected] OK 5 30 06/18/26 18:05:00 POPS 1464 51.255.75.91 PASS PASS * -ERR Unable to log on 23 25 show less	Port Scan Spoofing
🇳🇱 Godert Jan van Manen	2026-06-18 23:04:21 (2 weeks ago)	Jun 19 00:55:19 odin dovecot: auth-worker(13141): sql([email protected],51.255.75.91,<GKUBEo9U ... show more Jun 19 00:55:19 odin dovecot: auth-worker(13141): sql([email protected],51.255.75.91,<GKUBEo9UEKUz/0tb>): unknown user Jun 19 00:55:21 odin dovecot: pop3-login: Disconnected (auth failed, 1 attempts in 2 secs): user=<[email protected]>, method=PLAIN, rip=51.255.75.91, lip=178.162.131.122, session=<GKUBEo9UEKUz/0tb> Jun 19 00:57:20 odin dovecot: auth-worker(13141): sql([email protected],51.255.75.91,<8cE/GY9Unugz/0tb>): unknown user Jun 19 00:57:22 odin dovecot: pop3-login: Disconnected (auth failed, 1 attempts in 2 secs): user=<[email protected]>, method=PLAIN, rip=51.255.75.91, lip=178.162.131.122, session=<8cE/GY9Unugz/0tb> Jun 19 01:04:21 odin dovecot: auth-worker(13141): sql([email protected],51.255.75.91,<d9lRMo9UcOsz/0tb>): unknown user show less	Brute-Force
🇫🇷 pm33	2026-06-18 22:38:45 (2 weeks ago)	Probing for resource vulnerabilities HTTP(S)	Web App Attack
🇩🇪 FlyingFox	2026-06-18 20:33:12 (2 weeks ago)	2026-06-18T14:10:16.148654+02:00 server1 dovecot: pop3-login: Disconnected: Connection closed (auth ... show more 2026-06-18T14:10:16.148654+02:00 server1 dovecot: pop3-login: Disconnected: Connection closed (auth failed, 1 attempts in 2 secs): user=<[email protected]>, method=PLAIN, rip=51.255.75.91, lip=94.16.114.132, session=<Jrv9DoZUZtYz/0tb> 2026-06-18T15:37:43.290629+02:00 server1 dovecot: pop3-login: Disconnected: Connection closed (auth failed, 1 attempts in 2 secs): user=<[email protected]>, method=PLAIN, rip=51.255.75.91, lip=94.16.114.132, session=<UwXGR4dURrwz/0tb> 2026-06-18T22:33:11.407717+02:00 server1 dovecot: pop3-login: Disconnected: Connection closed (auth failed, 1 attempts in 2 secs): user=<[email protected]>, method=PLAIN, rip=51.255.75.91, lip=94.16.114.132, session=<PqqTFY1UsNkz/0tb> ... show less	Brute-Force
🇳🇱 Godert Jan van Manen	2026-06-18 20:10:54 (2 weeks ago)	Jun 18 22:01:31 odin dovecot: auth-worker(13141): sql([email protected],51.255.75.91,<h/xzpIxUUqQz/ ... show more Jun 18 22:01:31 odin dovecot: auth-worker(13141): sql([email protected],51.255.75.91,<h/xzpIxUUqQz/0tb>): unknown user Jun 18 22:01:33 odin dovecot: pop3-login: Disconnected (auth failed, 1 attempts in 2 secs): user=<[email protected]>, method=PLAIN, rip=51.255.75.91, lip=178.162.131.122, session=<h/xzpIxUUqQz/0tb> Jun 18 22:07:19 odin dovecot: auth-worker(13141): sql([email protected],51.255.75.91,<wu81uYxU8L0z/0tb>): unknown user Jun 18 22:07:21 odin dovecot: pop3-login: Disconnected (auth failed, 1 attempts in 2 secs): user=<[email protected]>, method=PLAIN, rip=51.255.75.91, lip=178.162.131.122, session=<wu81uYxU8L0z/0tb> Jun 18 22:10:54 odin dovecot: auth-worker(13141): sql([email protected],51.255.75.91,<uEEBxoxUbIcz/0tb>): unknown user show less	Brute-Force
🇳🇱 Godert Jan van Manen	2026-06-18 19:07:31 (2 weeks ago)	Jun 18 21:00:06 odin dovecot: auth-worker(13141): sql([email protected],51.255.75.91,<+4TKyItU ... show more Jun 18 21:00:06 odin dovecot: auth-worker(13141): sql([email protected],51.255.75.91,<+4TKyItU5p8z/0tb>): unknown user Jun 18 21:00:08 odin dovecot: pop3-login: Disconnected (auth failed, 1 attempts in 2 secs): user=<[email protected]>, method=PLAIN, rip=51.255.75.91, lip=178.162.131.122, session=<+4TKyItU5p8z/0tb> Jun 18 21:00:18 odin dovecot: auth-worker(13141): sql([email protected],51.255.75.91,<gsBJyYtURpoz/0tb>): unknown user Jun 18 21:00:20 odin dovecot: pop3-login: Disconnected (auth failed, 1 attempts in 6 secs): user=<[email protected]>, method=PLAIN, rip=51.255.75.91, lip=178.162.131.122, session=<gsBJyYtURpoz/0tb> Jun 18 21:07:30 odin dovecot: auth-worker(13141): sql([email protected],51.255.75.91,<8XxK44tUWqMz/0tb>): unknown user show less	Brute-Force
🇺🇸 ArturShelby	2026-06-18 15:49:53 (2 weeks ago)	Critical file access: /administrator/components/com_jce/jce.xml	Web App Attack
🇩🇪 gadix	2026-06-18 15:41:12 (2 weeks ago)	2026-06-18 10:35:29,949 fail2ban.actions [4743]: NOTICE [plesk-dovecot] Ban 51.255.75.91 202 ... show more 2026-06-18 10:35:29,949 fail2ban.actions [4743]: NOTICE [plesk-dovecot] Ban 51.255.75.91 2026-06-18 14:08:19,451 fail2ban.actions [4743]: NOTICE [plesk-dovecot] Ban 51.255.75.91 2026-06-18 17:41:12,426 fail2ban.actions [4743]: NOTICE [plesk-dovecot] Ban 51.255.75.91 ... show less	Brute-Force
🇩🇪 Vegascosmetics	2026-06-18 14:43:47 (2 weeks ago)	(Kingcopy.org-AI-IDS-Report):IP automatically blocked after suspicious activity. Vegas Security	DDoS Attack Hacking Exploited Host

Showing 1 to 15 of 42 reports

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