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AbuseIPDB » 123.16.221.252

123.16.221.252 was found in our database!

This IP was reported 30 times. Confidence of Abuse is 0%: ?

ISP	Vietnam Posts and Telecommunications Group
Usage Type	Fixed Line ISP
ASN	AS45899
Domain Name	vnpt.com.vn
Country	🇻🇳 Viet Nam
City	Hanoi, Hanoi

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

Report 123.16.221.252

Whois 123.16.221.252

IP Abuse Reports for 123.16.221.252:

This IP address has been reported a total of 30 times from 22 distinct sources. 123.16.221.252 was first reported on March 13th 2026, and the most recent report was 3 months ago.

Old Reports: The most recent abuse report for this IP address is from 3 months ago . It is possible that this IP is no longer involved in abusive activities.

Reporter	IoA Timestamp (UTC)	Comment	Categories
🇵🇱 webadmin	2026-05-08 00:57:36 (3 months ago)		Brute-Force
🇨🇿 janekCZ	2026-05-08 00:51:03 (3 months ago)	Fail2Ban report from jail 'postfix': 2026-05-08T02:51:02.458096+02:00 mail postfix/smtps/smtpd[19259 ... show more Fail2Ban report from jail 'postfix': 2026-05-08T02:51:02.458096+02:00 mail postfix/smtps/smtpd[192595]: warning: unknown[123.16.221.252]: SASL PLAIN authentication failed: (reason unavailable), [email protected] ... show less	Brute-Force SSH
🇨🇿 lp	2026-05-05 01:50:45 (3 months ago)	Email account brute force: 2 attempts were recorded from 123.16.221.252 2026-05-05T03:18:42+02:00 wa ... show more Email account brute force: 2 attempts were recorded from 123.16.221.252 2026-05-05T03:18:42+02:00 warning: unknown[123.16.221.252]: SASL PLAIN authentication failed: authentication failure, [email protected] 2026-05-05T03:18:43+02:00 warning: unknown[123.16.221.252]: SASL LOGIN authentication failed: authentication failure, [email protected] show less	Brute-Force
🇨🇿 lp	2026-04-28 21:19:43 (4 months ago)	Email account brute force: 2 attempts were recorded from 123.16.221.252 2026-04-28T21:58:58+02:00 wa ... show more Email account brute force: 2 attempts were recorded from 123.16.221.252 2026-04-28T21:58:58+02:00 warning: unknown[123.16.221.252]: SASL PLAIN authentication failed: authentication failure, [email protected] 2026-04-28T21:58:59+02:00 warning: unknown[123.16.221.252]: SASL LOGIN authentication failed: authentication failure, [email protected] show less	Brute-Force
🇩🇪 2and.de	2026-04-24 01:11:21 (4 months ago)	Apr 24 03:11:18 virtcc postfix/smtpd\[3369325\]: warning: unknown\[123.16.221.252\]: SASL PLAIN auth ... show more Apr 24 03:11:18 virtcc postfix/smtpd\[3369325\]: warning: unknown\[123.16.221.252\]: SASL PLAIN authentication failed: authentication failure Apr 24 03:11:18 virtcc postfix/smtpd\[3369326\]: warning: unknown\[123.16.221.252\]: SASL PLAIN authentication failed: authentication failure Apr 24 03:11:18 virtcc postfix/smtpd\[3369328\]: warning: unknown\[123.16.221.252\]: SASL PLAIN authentication failed: authentication failure Apr 24 03:11:18 virtcc postfix/smtpd\[3369327\]: warning: unknown\[123.16.221.252\]: SASL PLAIN authentication failed: authentication failure Apr 24 03:11:19 virtcc postfix/smtpd\[3369330\]: warning: unknown\[123.16.221.252\]: SASL PLAIN authentication failed: authentication failure ... show less	Brute-Force Exploited Host
🇷🇴 clauss	2026-04-23 17:19:15 (4 months ago)	IP reached maximum auth failures for a one day block	Brute-Force
Anonymous	2026-04-23 08:28:58 (4 months ago)	SMTP brute force - auth failed	Brute-Force Exploited Host
Anonymous	2026-04-17 00:37:49 (4 months ago)	2026-04-17 02:37:32.306 [2581432] dovecot_cram_md5 authenticator failed for (T31NGXPI6836) [123.16.2 ... show more 2026-04-17 02:37:32.306 [2581432] dovecot_cram_md5 authenticator failed for (T31NGXPI6836) [123.16.221.252]:49424 I=[217.197.86.168]:465 Ci=2581432: 535 Incorrect authentication data 2026-04-17 02:37:38.100 [2581432] dovecot_plain authenticator failed for (T31NGXPI6836) [123.16.221.252]:49424 I=[217.197.86.168]:465 Ci=2581432: 535 Incorrect authentication data 2026-04-17 02:37:48.112 [2581432] dovecot_login authenticator failed for (T31NGXPI6836) [123.16.221.252]:49424 I=[217.197.86.168]:465 Ci=2581432: 535 Incorrect authentication data ... show less	Email Spam
🇷🇴 gtheo99	2026-04-15 01:40:04 (4 months ago)	(smtpauth) Failed SMTP AUTH login from 123.16.221.252 (VN/Vietnam/static.vnpt.vn): 2 in the last 900 ... show more (smtpauth) Failed SMTP AUTH login from 123.16.221.252 (VN/Vietnam/static.vnpt.vn): 2 in the last 900 secs show less	Brute-Force Email Spam
Anonymous	2026-04-15 01:22:15 (4 months ago)	Authentication failure	Brute-Force
Anonymous	2026-04-14 10:19:53 (4 months ago)	SMTP brute force - auth failed	Brute-Force Exploited Host
🇩🇪 konseptit	2026-04-14 10:19:16 (4 months ago)	(smtpauth) Failed SMTP AUTH login from 123.16.221.252 (VN/Vietnam/static.vnpt.vn)	Brute-Force
🇨🇿 lp	2026-04-14 07:50:22 (4 months ago)	Email account brute force: 2 attempts were recorded from 123.16.221.252 2026-04-14T09:15:29+02:00 wa ... show more Email account brute force: 2 attempts were recorded from 123.16.221.252 2026-04-14T09:15:29+02:00 warning: unknown[123.16.221.252]: SASL PLAIN authentication failed: authentication failure, [email protected] 2026-04-14T09:15:30+02:00 warning: unknown[123.16.221.252]: SASL LOGIN authentication failed: authentication failure, [email protected] show less	Brute-Force
🇮🇹 Progetto1	2026-04-09 08:29:02 (4 months ago)	Mail - Multiple failed login attempts	Brute-Force Exploited Host
Anonymous	2026-04-06 02:31:24 (4 months ago)	SMTP brute force - auth failed	Brute-Force Exploited Host

Showing 1 to 15 of 30 reports

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