This IP address has been reported a total of
1,803
times from
321 distinct
sources.
81.236.211.54 was first reported on
, and the most recent report was
.
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
Feb 23 22:55:45 mx1 postfix/submission/smtpd[20127]: warning: 81-236-211-54-no2550.tbcn.telia.com[81 ...
show moreFeb 23 22:55:45 mx1 postfix/submission/smtpd[20127]: warning: 81-236-211-54-no2550.tbcn.telia.com[81.236.211.54]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Feb 24 03:33:55 mx1 postfix/smtps/smtpd[25584]: warning: 81-236-211-54-no2550.tbcn.telia.com[81.236.211.54]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Feb 24 07:57:49 mx1 postfix/smtps/smtpd[32306]: warning: 81-236-211-54-no2550.tbcn.telia.com[81.236.211.54]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
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2026-02-23T21:08:24.063341-05:00 debian sshd[3573037]: pam_unix(sshd:auth): authentication failure; ...
show more2026-02-23T21:08:24.063341-05:00 debian sshd[3573037]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.236.211.54
2026-02-23T21:08:25.666611-05:00 debian sshd[3573037]: Failed password for invalid user user from 81.236.211.54 port 54422 ssh2
2026-02-23T21:12:32.631418-05:00 debian sshd[3576001]: Invalid user support from 81.236.211.54 port 33888
2026-02-23T21:12:32.634998-05:00 debian sshd[3576001]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.236.211.54
2026-02-23T21:12:34.951529-05:00 debian sshd[3576001]: Failed password for invalid user support from 81.236.211.54 port 33888 ssh2
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2026-02-23T19:44:19.830495-05:00 debian sshd[3513349]: Failed password for invalid user test from 81 ...
show more2026-02-23T19:44:19.830495-05:00 debian sshd[3513349]: Failed password for invalid user test from 81.236.211.54 port 44904 ssh2
2026-02-23T19:49:44.396664-05:00 debian sshd[3516897]: Invalid user test from 81.236.211.54 port 36732
2026-02-23T19:49:44.400423-05:00 debian sshd[3516897]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.236.211.54
2026-02-23T19:49:46.366039-05:00 debian sshd[3516897]: Failed password for invalid user test from 81.236.211.54 port 36732 ssh2
2026-02-23T19:50:55.117147-05:00 debian sshd[3517610]: Invalid user test from 81.236.211.54 port 50442
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2026-02-23T19:20:04.920239-05:00 debian sshd[3497046]: Failed password for invalid user demo from 81 ...
show more2026-02-23T19:20:04.920239-05:00 debian sshd[3497046]: Failed password for invalid user demo from 81.236.211.54 port 57116 ssh2
2026-02-23T19:25:11.923108-05:00 debian sshd[3500124]: Invalid user testuser from 81.236.211.54 port 45618
2026-02-23T19:25:11.927088-05:00 debian sshd[3500124]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.236.211.54
2026-02-23T19:25:13.670923-05:00 debian sshd[3500124]: Failed password for invalid user testuser from 81.236.211.54 port 45618 ssh2
2026-02-23T19:31:24.411737-05:00 debian sshd[3504173]: Invalid user user from 81.236.211.54 port 54982
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(smtpauth) Failed SMTP AUTH login from 81.236.211.54 (SE/Sweden/81-236-211-54-no2550.tbcn.telia.com) ...
show more(smtpauth) Failed SMTP AUTH login from 81.236.211.54 (SE/Sweden/81-236-211-54-no2550.tbcn.telia.com): 1 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_TRIGGER; Logs: 2026-02-23T20:06:08.410549+11:00 mail postfix/submission/smtpd[82511]: warning: 81-236-211-54-no2550.tbcn.telia.com[81.236.211.54]: SASL LOGIN authentication failed: (reason unavailable), sasl_username=ashley13
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