JavaScript is disabled. Some features of this site may not work properly. For a smoother experience, please enable JavaScript in your browser settings.

AbuseIPDB » 178.16.55.123

178.16.55.123 was found in our database!

This IP was reported 53 times. Confidence of Abuse is 24%: ?

24%

ISP	OMEGATECH
Usage Type	Data Center/Web Hosting/Transit
ASN	AS202412
Domain Name	omegatech.sc
Country	🇳🇱 Netherlands
City	Rotterdam, South Holland

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

Report 178.16.55.123

Whois 178.16.55.123

IP Abuse Reports for 178.16.55.123:

This IP address has been reported a total of 53 times from 14 distinct sources. 178.16.55.123 was first reported on January 12th 2026, and the most recent report was 1 month ago.

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

Reporter	IoA Timestamp (UTC)	Comment	Categories
🇩🇪 club77	2026-05-04 05:28:04 (1 month ago)	2026-05-04T13:27:09.922459+08:00 mail dovecot: auth: passwd-file([email protected],178.16.55.123): unk ... show more 2026-05-04T13:27:09.922459+08:00 mail dovecot: auth: passwd-file([email protected],178.16.55.123): unknown user (SHA1 of given password: 8ac539) - trying the next passdb 2026-05-04T13:27:15.830146+08:00 mail dovecot: auth: passwd-file([email protected],178.16.55.123): unknown user (SHA1 of given password: 2cac48) - trying the next passdb 2026-05-04T13:27:25.931762+08:00 mail dovecot: auth: passwd-file([email protected],178.16.55.123): unknown user (SHA1 of given password: b42d0e) - trying the next passdb 2026-05-04T13:27:48.673953+08:00 mail dovecot: auth: passwd-file([email protected],178.16.55.123): unknown user (SHA1 of given password: e63d56) - trying the next passdb 2026-05-04T13:27:54.576111+08:00 mail dovecot: auth: passwd-file([email protected],178.16.55.123): unknown user (SHA1 of given password: 7f955e) - trying the next passdb 2026-05-04T13:28:04.474665+08:00 mail dovecot: auth: passwd-file([email protected],178.16.55.123): unknown user (SHA1 of given password: 8a397c) - trying the next ... show less	Brute-Force Email Spam
Anonymous	2026-05-03 02:51:53 (1 month ago)	Authentication failure	Brute-Force
🇮🇩 aaKenshin	2026-05-02 20:26:20 (1 month ago)	Suspicious activity detected from IP 178.16.55.123 based on mailserver logs. Sample logs: 2026-05-03 ... show more Suspicious activity detected from IP 178.16.55.123 based on mailserver logs. Sample logs: 2026-05-03 04:26:07,024 INFO [qtp2102534528-1770] [name=*@.id;ip=172.16.0.182;oip=178.16.55.123;oport=64616;oproto=smtp;port=48242;soapId=6cf32735;] soap - AuthRequest elapsed=6 2026-05-03 04:26:09,756 INFO [qtp2102534528-1763] [name=*@.id;ip=172.16.0.182;oip=178.16.55.123;oport=64576;oproto=smtp;port=48258;soapId=6cf32736;] SoapEngine - handler exception: authentication failed for [], LDAP error: - unable to ldap authenticate: invalid credentials 2026-05-03 04:26:09,756 INFO [qtp2102534528-1763] [name=@.id;ip=172.16.0.182;oip=178.16.55.123;oport=64576;oproto=smtp;port=48258;soapId=6cf32736;] soap - AuthRequest elapsed=2 2026-05-03 04:26:12,482 INFO [qtp2102534528-1789] [name=@.id;ip=172.16.0.182;oip=178.16.55.123;oport=63945;oproto=smtp;port=56708;soapId=6cf32737;] SoapEngine - handler exception: authentication failed for [**], LDAP error: - unable to ldap authenticate: invalid show less	Brute-Force
🇩🇪 FeG Deutschland	2026-04-12 13:28:06 (1 month ago)	Mail: - login with unknown user - bruteforce	Brute-Force
🇨🇿 lp	2026-04-11 04:50:19 (1 month ago)	Email account brute force: 6 attempts were recorded from 178.16.55.123 2026-04-11T06:12:04+02:00 war ... show more Email account brute force: 6 attempts were recorded from 178.16.55.123 2026-04-11T06:12:04+02:00 warning: unknown[178.16.55.123]: SASL LOGIN authentication failed: authentication failure, [email protected] 2026-04-11T06:12:05+02:00 warning: unknown[178.16.55.123]: SASL LOGIN authentication failed: authentication failure, [email protected] 2026-04-11T06:12:05+02:00 warning: unknown[178.16.55.123]: SASL LOGIN authentication failed: authentication failure, [email protected] 2026-04-11T06:12:06+02:00 warning: unknown[178.16.55.123]: SASL LOGIN authentication failed: authentication failure, [email protected] 2026-04-11T06:12:06+02:00 warning: unknown[178.16.55.123]: SASL LOGIN authentication failed: authentication failure, [email protected] 2026-04-11T06:12:07+02:00 warning: unknown[178.16.55.123]: SASL LOGIN authentication failed: authen show less	Brute-Force
🇩🇪 filstal.org	2026-04-10 20:43:46 (1 month ago)	CrowdSec-Report: crowdsecurity/postfix-spam	Email Spam Brute-Force
🇺🇸 xmission.com	2026-04-10 18:16:37 (1 month ago)	Blocked by UFW (TCP on 587) Source port: 64432 TTL: 103 Packet length: 52 TOS: 0x0A This report (fo ... show more Blocked by UFW (TCP on 587) Source port: 64432 TTL: 103 Packet length: 52 TOS: 0x0A This report (for 178.16.55.123) was generated by: https://github.com/sefinek/UFW-AbuseIPDB-Reporter show less	Port Scan
🇺🇸 bigscoots.com	2026-04-10 11:10:51 (1 month ago)	(smtpauth) Failed SMTP AUTH login from 178.16.55.123 (US/United States/-): 5 in the last 3600 secs; ... show more (smtpauth) Failed SMTP AUTH login from 178.16.55.123 (US/United States/-): 5 in the last 3600 secs; Ports: 25,465,587; Direction: 0; Trigger: LF_SMTPAUTH; Logs: 2026-04-10 07:09:53 dovecot_login authenticator failed for H=(b4Wh6rd) [178.16.55.123]:60004: 535 Incorrect authentication data ([email protected]) 2026-04-10 07:10:00 dovecot_login authenticator failed for H=(qGiRYUGfbb) [178.16.55.123]:60103: 535 Incorrect authentication data ([email protected]) 2026-04-10 07:10:11 dovecot_login authenticator failed for H=(4HLBrmHH) [178.16.55.123]:60292: 535 Incorrect authentication data ([email protected]) 2026-04-10 07:10:29 dovecot_login authenticator failed for H=(e1NC5Gn) [178.16.55.123]:60544: 535 Incorrect authentication data ([email protected]) 2026-04-10 07:10:47 dovecot_login authenticator failed for H=(UL2ExEGz) [178.16.55.123]:60964: 535 Incorrect authentication data ([email protected]) show less	Brute-Force SSH
🇺🇸 bigscoots.com	2026-04-07 21:45:28 (1 month ago)	(smtpauth) Failed SMTP AUTH login from 178.16.55.123 (US/United States/-): 5 in the last 3600 secs; ... show more (smtpauth) Failed SMTP AUTH login from 178.16.55.123 (US/United States/-): 5 in the last 3600 secs; Ports: 25,465,587; Direction: 0; Trigger: LF_SMTPAUTH; Logs: 2026-04-07 17:44:31 dovecot_login authenticator failed for H=(CHIuPF) [178.16.55.123]:64903: 535 Incorrect authentication data ([email protected]) 2026-04-07 17:44:38 dovecot_login authenticator failed for H=(4wIHkD2) [178.16.55.123]:64990: 535 Incorrect authentication data ([email protected]) 2026-04-07 17:44:49 dovecot_login authenticator failed for H=(LagiWZaI) [178.16.55.123]:65151: 535 Incorrect authentication data ([email protected]) 2026-04-07 17:45:07 dovecot_login authenticator failed for H=(r3Pr0cGb) [178.16.55.123]:65394: 535 Incorrect authentication data ([email protected]) 2026-04-07 17:45:25 dovecot_login authenticator failed for H=(H2dKdVu) [178.16.55.123]:49490: 535 Incorrect authentication data ([email protected]) show less	Brute-Force SSH
🇷🇸 Smel	2026-04-07 08:19:46 (1 month ago)	Mail/25/465/587-993/995 Probe, Reject, BadAuth, Hack, SPAM -	Email Spam Hacking Brute-Force
Anonymous	2026-04-07 03:13:22 (1 month ago)	Authentication failure	Brute-Force
Anonymous	2026-04-04 11:24:19 (2 months ago)	SMTP brute force - auth failed	Brute-Force Exploited Host
🇺🇸 bigscoots.com	2026-03-28 14:21:39 (2 months ago)	(smtpauth) Failed SMTP AUTH login from 178.16.55.123 (US/United States/-): 5 in the last 3600 secs; ... show more (smtpauth) Failed SMTP AUTH login from 178.16.55.123 (US/United States/-): 5 in the last 3600 secs; Ports: 25,465,587; Direction: 0; Trigger: LF_SMTPAUTH; Logs: 2026-03-28 10:20:42 dovecot_login authenticator failed for H=(PYjDhr) [178.16.55.123]:60075: 535 Incorrect authentication data ([email protected]) 2026-03-28 10:20:49 dovecot_login authenticator failed for H=(QnnEssG4) [178.16.55.123]:60467: 535 Incorrect authentication data ([email protected]) 2026-03-28 10:21:00 dovecot_login authenticator failed for H=(u5ay70Kjq) [178.16.55.123]:61364: 535 Incorrect authentication data ([email protected]) 2026-03-28 10:21:18 dovecot_login authenticator failed for H=(Ot3EwY6EE) [178.16.55.123]:62602: 535 Incorrect authentication data ([email protected]) 2026-03-28 10:21:36 dovecot_login authenticator failed for H=(Rppu7sSW) [178.16.55.123]:64184: 535 Incorrect authentication data ([email protected]) show less	Brute-Force SSH
🇺🇸 bigscoots.com	2026-03-19 19:31:54 (2 months ago)	(smtpauth) Failed SMTP AUTH login from 178.16.55.123 (US/United States/-): 5 in the last 3600 secs; ... show more (smtpauth) Failed SMTP AUTH login from 178.16.55.123 (US/United States/-): 5 in the last 3600 secs; Ports: 25,465,587; Direction: 0; Trigger: LF_SMTPAUTH; Logs: 2026-03-19 15:31:10 dovecot_login authenticator failed for H=(MAMzcIDfy) [178.16.55.123]:49774: 535 Incorrect authentication data 2026-03-19 15:31:15 dovecot_login authenticator failed for H=(lFZ2vPTU7Z) [178.16.55.123]:52454: 535 Incorrect authentication data ([email protected]) 2026-03-19 15:31:22 dovecot_login authenticator failed for H=(oZE7Ez6SqJ) [178.16.55.123]:52870: 535 Incorrect authentication data ([email protected]) 2026-03-19 15:31:33 dovecot_login authenticator failed for H=(sjcZ6A3gH) [178.16.55.123]:53700: 535 Incorrect authentication data ([email protected]) 2026-03-19 15:31:51 dovecot_login authenticator failed for H=(UV7ncU) [178.16.55.123]:54968: 535 Incorrect authentication data ([email protected]) show less	Brute-Force SSH
🇺🇸 bigscoots.com	2026-03-19 19:14:21 (2 months ago)	(smtpauth) Failed SMTP AUTH login from 178.16.55.123 (US/United States/-): 5 in the last 3600 secs; ... show more (smtpauth) Failed SMTP AUTH login from 178.16.55.123 (US/United States/-): 5 in the last 3600 secs; Ports: 25,465,587; Direction: 0; Trigger: LF_SMTPAUTH; Logs: 2026-03-19 15:13:25 dovecot_login authenticator failed for H=(PYRvyeO) [178.16.55.123]:61117: 535 Incorrect authentication data ([email protected]) 2026-03-19 15:13:32 dovecot_login authenticator failed for H=(9CohiamSIK) [178.16.55.123]:61365: 535 Incorrect authentication data ([email protected]) 2026-03-19 15:13:43 dovecot_login authenticator failed for H=(7JUe5d9fVb) [178.16.55.123]:62005: 535 Incorrect authentication data ([email protected]) 2026-03-19 15:14:01 dovecot_login authenticator failed for H=(Ya6cAQ2Ha) [178.16.55.123]:63134: 535 Incorrect authentication data ([email protected]) 2026-03-19 15:14:19 dovecot_login authenticator failed for H=(Wwq54s) [178.16.55.123]:64981: 535 Incorrect authentication data ([email protected]) show less	Brute-Force SSH

Showing 1 to 15 of 53 reports

Think this IP has been falsely reported? You may request to have the associated reports reviewed and removed. Request Takedown 🚩

Recently Reported IPs:

🇬🇧 74.125.40.153

🇦🇷 64.145.79.75

🇦🇺 40.82.214.8

🇰🇷 211.223.107.86

🇩🇪 163.181.58.171

🇺🇸 147.185.132.103

🇬🇧 138.68.150.39

🇳🇿 121.73.168.113

🇮🇳 106.215.180.181

🇺🇸 96.56.228.149

🇳🇱 45.153.34.114

🇳🇱 45.148.10.141

🇩🇪 213.209.159.11

🇧🇷 205.210.31.252

🇨🇳 203.189.221.17

🇬🇧 193.163.125.209

🇧🇷 187.51.84.86

🇨🇳 116.204.98.39

🇨🇳 115.190.151.15

🇵🇰 103.197.46.34