AbuseIPDB » 135.236.106.73
135.236.106.73
This IP was reported 9 times. Confidence of
Abuse
is 33% : ?
ISP
Microsoft Limited
Usage Type
Data Center/Web Hosting/Transit
ASN
AS8075
Domain Name
microsoft.com
Country
🇳🇱
Netherlands
City
Amsterdam, North Holland
IP info including ISP, Usage Type, and Location provided
by IPInfo . Updated weekly.
IP Abuse Reports for 135.236.106.73 :
This IP address has been reported a total of
9
times from
7 distinct
sources.
135.236.106.73 was first reported on
May 28th 2026 , and the most recent report was
2 weeks ago
Old Reports:
The most recent abuse report for this IP address is from
2 weeks ago
Reporter
IoA Timestamp (UTC)
Comment
Categories
🇫🇷
vhnmn
2026-06-02 00:17:40
(2 weeks ago)
spam/brute force attack blocked attempt from fail2ban
...
Email Spam
Brute-Force
🇧🇷
LM Security
2026-06-01 19:30:03
(2 weeks ago)
2026-06-01 16:26:03 dovecot_login authenticator failed for H=(ADMIN) [135.236.106.73]:64995: 535 Inc ...
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2026-06-01 16:26:03 dovecot_login authenticator failed for H=(ADMIN) [135.236.106.73]:64995: 535 Incorrect authentication data (set_id=sj@[redacted].com.br)
2026-06-01 15:14:18 dovecot_login authenticator failed for H=(ADMIN) [135.236.106.73]:49540: 535 Incorrect authentication data (set_id=promo@[redacted].com.br)
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Brute-Force
🇺🇸
welm
2026-05-29 05:44:22
(2 weeks ago)
(PERMBLOCK) 135.236.106.73 (NL/The Netherlands/-) has had more than 4 temp blocks in the last 86400 ...
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(PERMBLOCK) 135.236.106.73 (NL/The Netherlands/-) has had more than 4 temp blocks in the last 86400 secs; Ports: *; Direction: inout; Trigger: LF_PERMBLOCK_COUNT; Logs:
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Port Scan
🇺🇸
bigscoots.com
2026-05-28 10:18:03
(2 weeks ago)
(smtpauth) Failed SMTP AUTH login from 135.236.106.73 (NL/The Netherlands/-): 5 in the last 3600 sec ...
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(smtpauth) Failed SMTP AUTH login from 135.236.106.73 (NL/The Netherlands/-): 5 in the last 3600 secs; Ports: 25,465,587; Direction: 0; Trigger: LF_SMTPAUTH; Logs: 2026-05-28 06:13:33 dovecot_login authenticator failed for H=(ADMIN) [135.236.106.73]:58340: 535 Incorrect authentication data ([email protected] )
2026-05-28 06:15:28 dovecot_login authenticator failed for H=(ADMIN) [135.236.106.73]:62624: 535 Incorrect authentication data ([email protected] )
2026-05-28 06:17:02 dovecot_login authenticator failed for H=(ADMIN) [135.236.106.73]:54682: 535 Incorrect authentication data ([email protected] )
2026-05-28 06:17:48 dovecot_login authenticator failed for H=(ADMIN) [135.236.106.73]:53240: 535 Incorrect authentication data ([email protected] )
2026-05-28 06:18:01 dovecot_login authenticator failed for H=(ADMIN) [135.236.106.73]:59720: 535 Incorrect authentication data ([email protected] )
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Brute-Force
SSH
🇺🇸
bigscoots.com
2026-05-28 09:49:21
(2 weeks ago)
(smtpauth) Failed SMTP AUTH login from 135.236.106.73 (NL/The Netherlands/-): 5 in the last 3600 sec ...
show more
(smtpauth) Failed SMTP AUTH login from 135.236.106.73 (NL/The Netherlands/-): 5 in the last 3600 secs; Ports: 25,465,587; Direction: 0; Trigger: LF_SMTPAUTH; Logs: 2026-05-28 05:34:27 dovecot_login authenticator failed for H=(ADMIN) [135.236.106.73]:65253: 535 Incorrect authentication data ([email protected] )
2026-05-28 05:34:46 dovecot_login authenticator failed for H=(ADMIN) [135.236.106.73]:60775: 535 Incorrect authentication data ([email protected] )
2026-05-28 05:44:05 dovecot_login authenticator failed for H=(ADMIN) [135.236.106.73]:57471: 535 Incorrect authentication data ([email protected] )
2026-05-28 05:45:01 dovecot_login authenticator failed for H=(ADMIN) [135.236.106.73]:59210: 535 Incorrect authentication data ([email protected] )
2026-05-28 05:49:20 dovecot_login authenticator failed for H=(ADMIN) [135.236.106.73]:60325: 535 Incorrect authentication data ([email protected] )
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Brute-Force
SSH
🇧🇷
SvrAdmin
2026-05-28 09:45:34
(2 weeks ago)
[315] (smtpauth) Failed SMTP AUTH login from 135.236.106.73 (NL/The Netherlands/-): 5 in the last 36 ...
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[315] (smtpauth) Failed SMTP AUTH login from 135.236.106.73 (NL/The Netherlands/-): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SMTPAUTH; Logs: May 28 06:28:33 cwp01 postfix/smtpd[18059]: warning: unknown[135.236.106.73]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 28 06:30:14 cwp01 postfix/smtpd[18059]: warning: unknown[135.236.106.73]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 28 06:30:14 cwp01 postfix/smtpd[17943]: warning: unknown[135.236.106.73]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 28 06:43:54 cwp01 postfix/smtpd[19429]: warning: unknown[135.236.106.73]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May 28 06:45:32 cwp01 postfix/smtpd[19429]: warning: unknown[135.236.106.73]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
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Port Scan
Hacking
Brute-Force
Exploited Host
🇺🇸
bigscoots.com
2026-05-28 09:29:09
(2 weeks ago)
(smtpauth) Failed SMTP AUTH login from 135.236.106.73 (NL/The Netherlands/-): 5 in the last 3600 sec ...
show more
(smtpauth) Failed SMTP AUTH login from 135.236.106.73 (NL/The Netherlands/-): 5 in the last 3600 secs; Ports: 25,465,587; Direction: 0; Trigger: LF_SMTPAUTH; Logs: 2026-05-28 04:39:19 dovecot_login authenticator failed for H=(ADMIN) [135.236.106.73]:60464: 535 Incorrect authentication data ([email protected] )
2026-05-28 05:17:02 dovecot_login authenticator failed for H=(ADMIN) [135.236.106.73]:52678: 535 Incorrect authentication data ([email protected] )
2026-05-28 05:21:55 dovecot_login authenticator failed for H=(ADMIN) [135.236.106.73]:53624: 535 Incorrect authentication data ([email protected] )
2026-05-28 05:22:34 dovecot_login authenticator failed for H=(ADMIN) [135.236.106.73]:63278: 535 Incorrect authentication data ([email protected] )
2026-05-28 05:29:08 dovecot_login authenticator failed for H=(ADMIN) [135.236.106.73]:61994: 535 Incorrect authentication data ([email protected] )
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Brute-Force
SSH
🇨🇦
Julio Covolato
2026-05-28 06:40:01
(2 weeks ago)
Imap or Submission login brute-force attacks.
Brute-Force
2026-05-28 04:58:02
(2 weeks ago)
BruteForce IMAP/POP3/SMTP
Brute-Force
Showing 1 to
9
of 9 reports
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