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AbuseIPDB » 66.56.81.121

66.56.81.121 was found in our database!

This IP was reported 17 times. Confidence of Abuse is 0%: ?

ISP	VPN Consumer Toronto, Canada
Usage Type	Data Center/Web Hosting/Transit
ASN	AS212238
Domain Name	vpnconsumer.com
Country	🇨🇦 Canada
City	Toronto, Ontario

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

Report 66.56.81.121

Whois 66.56.81.121

IP Abuse Reports for 66.56.81.121:

This IP address has been reported a total of 17 times from 13 distinct sources. 66.56.81.121 was first reported on July 13th 2025, and the most recent report was 2 months ago.

Old Reports: The most recent abuse report for this IP address is from 2 months ago . It is possible that this IP is no longer involved in abusive activities.

Reporter	IoA Timestamp (UTC)	Comment	Categories
🇺🇸 xmission.com	2026-04-21 20:01:23 (2 months ago)	Blocked by UFW (TCP on 51413) Source port: 47346 TTL: 56 Packet length: 60 TOS: 0x00 This report (f ... show more Blocked by UFW (TCP on 51413) Source port: 47346 TTL: 56 Packet length: 60 TOS: 0x00 This report (for 66.56.81.121) was generated by: https://github.com/sefinek/UFW-AbuseIPDB-Reporter show less	Port Scan
Anonymous	2026-04-21 09:53:36 (2 months ago)	IMAP brute-force: 1 failed authentication attempt(s) in 24h detected by CRMON security monitor. Abus ... show more IMAP brute-force: 1 failed authentication attempt(s) in 24h detected by CRMON security monitor. AbuseIPDB confidence score at block time: 16%. show less	Brute-Force
🇫🇷 SpaceHost-Server	2026-04-15 18:52:18 (2 months ago)	Apr 15 20:52:16 pegasus postfix/smtpd[2306091]: warning: unknown[66.56.81.121]: SASL CRAM-MD5 authen ... show more Apr 15 20:52:16 pegasus postfix/smtpd[2306091]: warning: unknown[66.56.81.121]: SASL CRAM-MD5 authentication failed: authentication failure, [email protected] Apr 15 20:52:16 pegasus postfix/smtpd[2306091]: warning: unknown[66.56.81.121]: SASL PLAIN authentication failed: authentication failure, [email protected] Apr 15 20:52:16 pegasus postfix/smtpd[2306091]: warning: unknown[66.56.81.121]: SASL LOGIN authentication failed: authentication failure, [email protected] show less	Hacking Brute-Force
Anonymous	2026-03-27 16:30:32 (2 months ago)	Failed login attempt detected by Fail2Ban in plesk-postfix jail	Brute-Force
Anonymous	2026-03-04 01:50:47 (3 months ago)	Unauthorized connection attempt detected in the last 24 hours	Hacking
Anonymous	2026-02-06 14:15:13 (4 months ago)	Unauthorized connection attempt detected in the last 24 hours	Hacking
Anonymous	2026-02-03 14:10:12 (4 months ago)	Unauthorized connection attempt detected in the last 24 hours	Hacking
Anonymous	2026-01-31 14:05:24 (4 months ago)	Unauthorized connection attempt detected in the last 24 hours	Hacking
🇧🇷 SvrAdmin	2026-01-25 08:57:03 (4 months ago)	[101] (smtpauth) Failed SMTP AUTH login from 66.56.81.121 (CA/Canada/-): 5 in the last 3600 secs; Po ... show more [101] (smtpauth) Failed SMTP AUTH login from 66.56.81.121 (CA/Canada/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SMTPAUTH; Logs: 2026-01-25 05:56:32 dovecot_plain authenticator failed for H=([10.27.18.50]) [66.56.81.121]:38897: 535 Incorrect authentication data ([email protected]) 2026-01-25 05:56:38 dovecot_login authenticator failed for H=([10.27.18.50]) [66.56.81.121]:38897: 535 Incorrect authentication data ([email protected]) 2026-01-25 05:56:45 dovecot_plain authenticator failed for H=([10.27.18.50]) [66.56.81.121]:30177: 535 Incorrect authentication data ([email protected]) 2026-01-25 05:56:47 dovecot_login authenticator failed for H=([10.27.18.50]) [66.56.81.121]:30177: 535 Incorrect authentication data ([email protected]) 2026-01-25 05:56:57 dovecot_plain authenticator failed for H=([10.27.18.50]) [66.56.81.121]:62823: 535 Incorrect authentication data ([email protected]) show less	Port Scan Hacking Brute-Force Exploited Host
🇺🇸 bigscoots.com	2026-01-25 05:51:47 (4 months ago)	(smtpauth) Failed SMTP AUTH login from 66.56.81.121 (CA/Canada/-): 5 in the last 3600 secs; Ports: 2 ... show more (smtpauth) Failed SMTP AUTH login from 66.56.81.121 (CA/Canada/-): 5 in the last 3600 secs; Ports: 25,465,587; Direction: 0; Trigger: LF_SMTPAUTH; Logs: 2026-01-25 00:51:19 dovecot_plain authenticator failed for H=([10.27.18.50]) [66.56.81.121]:23142: 535 Incorrect authentication data ([email protected]) 2026-01-25 00:51:25 dovecot_login authenticator failed for H=([10.27.18.50]) [66.56.81.121]:23142: 535 Incorrect authentication data ([email protected]) 2026-01-25 00:51:31 dovecot_plain authenticator failed for H=([10.27.18.50]) [66.56.81.121]:12038: 535 Incorrect authentication data ([email protected]) 2026-01-25 00:51:37 dovecot_login authenticator failed for H=([10.27.18.50]) [66.56.81.121]:12038: 535 Incorrect authentication data ([email protected]) 2026-01-25 00:51:45 dovecot_plain authenticator failed for H=([10.27.18.50]) [66.56.81.121]:52234: 535 Incorrect authentication data ([email protected]) show less	Brute-Force SSH
🇺🇸 IDS	2026-01-25 04:33:02 (5 months ago)	Jan 24 23:32:33 mail postfix/smtpd[2525521]: warning: unknown[66.56.81.121]: SASL PLAIN authenticati ... show more Jan 24 23:32:33 mail postfix/smtpd[2525521]: warning: unknown[66.56.81.121]: SASL PLAIN authentication failed: authentication failure Jan 24 23:32:35 mail postfix/smtpd[2525521]: warning: unknown[66.56.81.121]: SASL LOGIN authentication failed: authentication failure Jan 24 23:32:38 mail postfix/smtpd[2525811]: warning: unknown[66.56.81.121]: SASL PLAIN authentication failed: authentication failure Jan 24 23:32:40 mail postfix/smtpd[2525811]: warning: unknown[66.56.81.121]: SASL LOGIN authentication failed: authentication failure Jan 24 23:33:01 mail postfix/smtpd[2525521]: warning: unknown[66.56.81.121]: SASL PLAIN authentication failed: authentication failure ... show less	Brute-Force Web App Attack
🇫🇷 adlp.org	2026-01-25 02:04:54 (5 months ago)	Jan 25 02:04:48 nginx-mua ==smtp/[email protected]== : TRAKEUR-Out;0;127.0.0.1;66.56.81.121;[UNAVAILABLE ... show more Jan 25 02:04:48 nginx-mua ==smtp/[email protected]== : TRAKEUR-Out;0;127.0.0.1;66.56.81.121;[UNAVAILABLE];[email protected];smtp;cram-md5;1;@adlp.org$;KILL;2;Licence to kill Jan 25 02:04:51 nginx-mua ==smtp/[email protected]== : TRAKEUR-Out;0;127.0.0.1;66.56.81.121;[UNAVAILABLE];[email protected];smtp;cram-md5;1;@adlp.org$;KILL;2;Licence to kill Jan 25 02:04:54 nginx-mua ==smtp/[email protected]== : TRAKEUR-Out;0;127.0.0.1;66.56.81.121;[UNAVAILABLE];[email protected];smtp;cram-md5;1;@adlp.org$;KILL;2;Licence to kill ... show less	Brute-Force
🇨🇦 Dunham Support	2026-01-25 02:04:00 (5 months ago)	(smtpauth) Failed SMTP AUTH login from 66.56.81.121 (CA/Canada/-)	Brute-Force
🇩🇪 grassau.com	2026-01-24 10:15:49 (5 months ago)	(smtpauth) Failed SMTP AUTH login from 66.56.81.121 (CA/Canada/-)	Brute-Force
🇫🇷 GabrielJST	2026-01-20 06:13:40 (5 months ago)	(smtpauth) Failed SMTP AUTH login from 66.56.81.121 (CA/Canada/-)	Brute-Force

Showing 1 to 15 of 17 reports

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