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AbuseIPDB » 31.131.56.56

31.131.56.56 was found in our database!

This IP was reported 18 times. Confidence of Abuse is 87%: ?

87%

ISP	Uniwersytet Przyrodniczy w Lublinie
Usage Type	University/College/School
ASN	AS199936
Hostname(s)	31-131-56-56.up.lublin.pl
Domain Name	lublin.pl
Country	🇵🇱 Poland
City	Lublin, Lublin

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

Report 31.131.56.56

Whois 31.131.56.56

IP Abuse Reports for 31.131.56.56:

This IP address has been reported a total of 18 times from 14 distinct sources. 31.131.56.56 was first reported on July 13th 2026, and the most recent report was 3 hours ago.

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
Anonymous	2026-07-15 05:00:41 (3 hours ago)	BruteForce IMAP/POP3/SMTP	Brute-Force
🇩🇪 FeG Deutschland	2026-07-14 23:04:13 (9 hours ago)	Mail: - login with unknown user - bruteforce	Brute-Force
Anonymous	2026-07-14 22:33:45 (10 hours ago)	6x Postfix SASL LOGIN authentication failed	Brute-Force
🇬🇧 gaztronics	2026-07-14 19:50:57 (12 hours ago)	2026-07-14T19:50:55.647919 liberator sendmail[3260331]: 66EJopCQ3260331: AUTH failure (LOGIN): authe ... show more 2026-07-14T19:50:55.647919 liberator sendmail[3260331]: 66EJopCQ3260331: AUTH failure (LOGIN): authentication failure (-13) SASL(-13): authentication failure: checkpass failed, user=terri, relay=31-131-56-56.up.lublin.pl [31.131.56.56] (may be forged) ... show less	Brute-Force
🇩🇪 www.fransveldman.world	2026-07-14 18:33:13 (14 hours ago)	Jul 14 18:33:12 mail postfix/submission/smtpd[1284914]: warning: unknown[31.131.56.56]: SASL LOGIN a ... show more Jul 14 18:33:12 mail postfix/submission/smtpd[1284914]: warning: unknown[31.131.56.56]: SASL LOGIN authentication failed: UGFzc3dvcmQ6 Jul 14 18:33:12 mail postfix/submission/smtpd[1284914]: lost connection after AUTH from unknown[31.131.56.56] ... show less	Brute-Force Email Spam
🇩🇪 Paul Smith	2026-07-14 11:02:28 (21 hours ago)	Email Auth Brute force attack 1/1 in last day	Brute-Force
🇮🇹 CoreTech srl	2026-07-14 09:32:33 (23 hours ago)	"SMTP Login failed": count(IP)=28.0mail3-dc1 11:27:42.337 [185.149.191.92] SMTP Login failed: Incorr ... show more "SMTP Login failed": count(IP)=28.0mail3-dc1 11:27:42.337 [185.149.191.92] SMTP Login failed: Incorrect password for user [[email protected]]Smartermail 11:29:18.015 [180.210.164.158] SMTP Login failed: That domain was not found. Double check your email address.Smartermail 11:29:18.015 [180.210.164.158] SMTP Login failed: Domain [brinformatica.it] not foundSmartermail 11:29:18.852 [14.20.77.129] SMTP Login failed: Domain [vermaritalia.it] not foundSmartermail 11:29:18.852 [14.20.77.129] SMTP Login failed: That domain was not found. Double check your email address.Smartermail 11:29:22.246 [31.131.56.56] SMTP Login failed: Domain [] not foundSmartermail 11:29:22.246 [31.131.56.56] SMTP Login failed: That domain was not found. Double check your email address.Smartermail 11:29:26.348 [221.162.18.91] SMTP Login failed: Domain [] not foundSmartermail 11:29:26.348 [221.162.18.91] SMTP Login failed: That domain was not found. Double check your email address. show less	Brute-Force
🇩🇪 DocNetzwerk	2026-07-14 08:56:41 (23 hours ago)	(smtpauth) Failed SMTP AUTH login from 31.131.56.56 (PL/Poland/31-131-56-56.up.lublin.pl)	Brute-Force
Anonymous	2026-07-13 22:39:59 (1 day ago)	SMTP brute force - auth failed	Brute-Force Exploited Host
🇮🇹 CoreTech srl	2026-07-13 22:37:32 (1 day ago)	"SMTP Login failed": count(IP)=16.0Smartermail 00:33:21.907 [50.58.110.190] SMTP Login failed: Domai ... show more "SMTP Login failed": count(IP)=16.0Smartermail 00:33:21.907 [50.58.110.190] SMTP Login failed: Domain [consus.it] not foundSmartermail 00:33:21.907 [50.58.110.190] SMTP Login failed: That domain was not found. Double check your email address.is-60632bc2 00:33:24.198 [31.131.56.56] SMTP Login failed: Domain [vallura.it] not foundis-60632bc2 00:33:24.198 [31.131.56.56] SMTP Login failed: That domain was not found. Double check your email address.Smartermail 00:33:27.939 [218.149.183.58] SMTP Login failed: That domain was not found. Double check your email address.Smartermail 00:33:27.939 [218.149.183.58] SMTP Login failed: Domain [] not foundis-60632bc2 00:33:31.301 [115.131.27.24] SMTP Login failed: Invalid username ([email protected]) and password combination.is-60632bc2 00:33:31.301 [115.131.27.24] SMTP Login failed: User [eliana.bergamo] not foundis-63909a28 00:34:36.122 [80.87.66.11] SMTP Login failed: User [rosy] not found show less	Brute-Force
🇨🇿 lp	2026-07-13 19:50:14 (1 day ago)	Email account brute force: 1 attempts were recorded from 31.131.56.56 2026-07-13T20:31:33+02:00 warn ... show more Email account brute force: 1 attempts were recorded from 31.131.56.56 2026-07-13T20:31:33+02:00 warning: unknown[31.131.56.56]: SASL LOGIN authentication failed: authentication failure, [email protected] show less	Brute-Force
🇵🇾 SecOpsSL	2026-07-13 18:44:01 (1 day ago)	Jul 13 15:41:32 mail postfix/smtps/smtpd[42885]: warning: unknown[31.131.56.56]: SASL LOGIN authenti ... show more Jul 13 15:41:32 mail postfix/smtps/smtpd[42885]: warning: unknown[31.131.56.56]: SASL LOGIN authentication failed: authentication failure show less	Email Spam Brute-Force
🇩🇪 FeG Deutschland	2026-07-13 18:06:03 (1 day ago)	Mail: - login with unknown user - bruteforce	Brute-Force
Anonymous	2026-07-13 12:53:20 (1 day ago)	2026-07-13T14:53:20.321945+02:00 soli-gate postfix/submissions/smtpd[853926]: warning: unknown[31.13 ... show more 2026-07-13T14:53:20.321945+02:00 soli-gate postfix/submissions/smtpd[853926]: warning: unknown[31.131.56.56]: SASL LOGIN authentication failed: authentication failure, [email protected] ... show less	Brute-Force
🇮🇹 CoreTech srl	2026-07-13 10:52:34 (1 day ago)	"SMTP Login failed": count(IP)=34.0is-60632bc2 12:47:43.623 [165.232.102.200] SMTP Login failed: Tha ... show more "SMTP Login failed": count(IP)=34.0is-60632bc2 12:47:43.623 [165.232.102.200] SMTP Login failed: That domain was not found. Double check your email address.is-60632bc2 12:47:43.623 [165.232.102.200] SMTP Login failed: Domain [serigroup.it] not foundis-6411d9d7 12:47:59.706 [117.6.251.202] SMTP Login failed: Domain [coretech.it] not foundis-6411d9d7 12:47:59.706 [117.6.251.202] SMTP Login failed: That domain was not found. Double check your email address.Smartermail 12:48:36.907 [211.224.23.239] SMTP Login failed: Domain [valentina96.it] not foundSmartermail 12:48:36.907 [211.224.23.239] SMTP Login failed: That domain was not found. Double check your email address.Smartermail 12:48:41.882 [171.233.99.233] SMTP Login failed: Domain [] not foundSmartermail 12:48:41.882 [171.233.99.233] SMTP Login failed: That domain was not found. Double check your email address.is-674f2577 12:49:22.064 [31.131.56.56] SMTP Login failed: User [g.marino] not found show less	Brute-Force

Showing 1 to 15 of 18 reports

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