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AbuseIPDB » 138.255.65.52

138.255.65.52 was found in our database!

This IP was reported 21 times. Confidence of Abuse is 30%: ?

30%

ISP	TELFO SERVICO DE TELECOMUNICACOES LTDA
Usage Type	Fixed Line ISP
ASN	AS263970
Hostname(s)	138-255-65-52.telfo.com.br
Domain Name	telfo.com.br
Country	🇧🇷 Brazil
City	Fortaleza, Ceara

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

Report 138.255.65.52

Whois 138.255.65.52

IP Abuse Reports for 138.255.65.52:

This IP address has been reported a total of 21 times from 10 distinct sources. 138.255.65.52 was first reported on April 21st 2026, and the most recent report was 2 days ago.

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
🇨🇭 Origon	2026-07-08 19:52:58 (2 days ago)	NOQUEUE - IP: 138.255.65.52 - Jul 8 21:52:58 plesk postfix/smtpd[1873454]: NOQUEUE: reject: RCPT fr ... show more NOQUEUE - IP: 138.255.65.52 - Jul 8 21:52:58 plesk postfix/smtpd[1873454]: NOQUEUE: reject: RCPT from unknown[138.255.65.52]: 554 5.7.1 Service unavailable; Client host [138.255.65.52] blocked using dnsbl-1.uceprotect.net; IP 138.255.65.52 is UCEPROTECT-Level 1 listed. See http://www.uceprotect.net/rblcheck.php?ipr=138.255.65.52; from=<REDACTED@REDACTED> to=<REDACTED@REDACTED> proto=ESMTP helo=<138-255-65-52.telfo.com.br> show less	Email Spam
🇩🇪 Viveronese	2026-07-08 02:31:00 (3 days ago)	SASL LOGIN authentication failed	Brute-Force
🇨🇭 Origon	2026-07-05 17:16:30 (5 days ago)	NOQUEUE - IP: 138.255.65.52 - Jul 5 19:15:57 plesk postfix/smtpd[3269933]: NOQUEUE: reject: RCPT fr ... show more NOQUEUE - IP: 138.255.65.52 - Jul 5 19:15:57 plesk postfix/smtpd[3269933]: NOQUEUE: reject: RCPT from unknown[138.255.65.52]: 554 5.7.1 Service unavailable; Client host [138.255.65.52] blocked using dnsbl-1.uceprotect.net; IP 138.255.65.52 is UCEPROTECT-Level 1 listed. See http://www.uceprotect.net/rblcheck.php?ipr=138.255.65.52; from=<REDACTED@REDACTED> to=<REDACTED@REDACTED> proto=ESMTP helo=<138-255-65-52.telfo.com.br> show less	Email Spam
🇷🇸 Smel	2026-06-23 09:05:01 (2 weeks ago)	Mail/25/465/587-993/995 Probe, Reject, BadAuth, Hack, SPAM -	Email Spam Hacking Brute-Force
🇷🇸 Smel	2026-06-14 09:34:36 (3 weeks ago)	Mail/25/465/587-993/995 Probe, Reject, BadAuth, Hack, SPAM -	Email Spam Hacking Brute-Force
🇨🇭 Origon	2026-06-11 14:08:44 (4 weeks ago)	NOQUEUE - IP: 138.255.65.52 - Jun 11 16:08:44 plesk postfix/smtpd[3604822]: NOQUEUE: reject: RCPT f ... show more NOQUEUE - IP: 138.255.65.52 - Jun 11 16:08:44 plesk postfix/smtpd[3604822]: NOQUEUE: reject: RCPT from unknown[138.255.65.52]: 554 5.7.1 Service unavailable; Client host [138.255.65.52] blocked using dnsbl-1.uceprotect.net; IP 138.255.65.52 is UCEPROTECT-Level 1 listed. See http://www.uceprotect.net/rblcheck.php?ipr=138.255.65.52; from=<REDACTED@REDACTED> to=<REDACTED@REDACTED> proto=ESMTP helo=<[138.255.65.52]> show less	Email Spam
🇩🇪 kexol	2026-06-09 13:11:55 (1 month ago)	8080 port scanned	Port Scan
🇨🇭 Origon	2026-06-01 20:54:44 (1 month ago)	NOQUEUE - IP: 138.255.65.52 - Jun 1 22:54:44 plesk postfix/smtpd[3723822]: NOQUEUE: reject: RCPT fr ... show more NOQUEUE - IP: 138.255.65.52 - Jun 1 22:54:44 plesk postfix/smtpd[3723822]: NOQUEUE: reject: RCPT from unknown[138.255.65.52]: 554 5.7.1 Service unavailable; Client host [138.255.65.52] blocked using dnsbl-1.uceprotect.net; IP 138.255.65.52 is UCEPROTECT-Level 1 listed. See http://www.uceprotect.net/rblcheck.php?ipr=138.255.65.52; from=<REDACTED@REDACTED> to=<REDACTED@REDACTED> proto=ESMTP helo=<138-255-65-52.telfo.com.br> show less	Email Spam
Anonymous	2026-05-31 07:56:26 (1 month ago)	SpamAssassin score 23.7 exceeded block threshold 15.0	Email Spam
🇩🇪 Viveronese	2026-05-29 19:47:51 (1 month ago)	SASL LOGIN authentication failed	Brute-Force
🇨🇭 Origon	2026-05-29 19:01:58 (1 month ago)	NOQUEUE - IP: 138.255.65.52 - May 29 21:01:58 plesk postfix/smtpd[1369932]: NOQUEUE: reject: RCPT f ... show more NOQUEUE - IP: 138.255.65.52 - May 29 21:01:58 plesk postfix/smtpd[1369932]: NOQUEUE: reject: RCPT from unknown[138.255.65.52]: 554 5.7.1 Service unavailable; Client host [138.255.65.52] blocked using dnsbl-1.uceprotect.net; IP 138.255.65.52 is UCEPROTECT-Level 1 listed. See http://www.uceprotect.net/rblcheck.php?ipr=138.255.65.52; from=<REDACTED@REDACTED> to=<REDACTED@REDACTED> proto=ESMTP helo=<138.255.65.52> show less	Email Spam
🇩🇪 Viveronese	2026-05-28 19:35:27 (1 month ago)	SASL LOGIN authentication failed	Brute-Force
Anonymous	2026-05-28 15:18:17 (1 month ago)	2026-05-28T17:18:16.752420+02:00 gollum postfix/smtpd[978900]: NOQUEUE: reject: RCPT from unknown[13 ... show more 2026-05-28T17:18:16.752420+02:00 gollum postfix/smtpd[978900]: NOQUEUE: reject: RCPT from unknown[138.255.65.52]: 554 5.7.1 Service unavailable; Client host [138.255.65.52] blocked using zen.spamhaus.org; Listed by CSS, see https://check.spamhaus.org/query/ip/138.255.65.52 / Listed by PBL, see https://check.spamhaus.org/query/ip/138.255.65.52 / Listed by XBL, see https://check.spamhaus.org/query/ip/138.255.65.52; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<138-255-65-52.telfo.com.br> ... show less	Email Spam
🇩🇪 Viveronese	2026-05-27 17:52:00 (1 month ago)	SASL LOGIN authentication failed	Brute-Force
🇨🇭 Origon	2026-05-26 13:58:19 (1 month ago)	NOQUEUE - IP: 138.255.65.52 - May 26 15:57:43 plesk postfix/smtpd[3167192]: NOQUEUE: reject: RCPT f ... show more NOQUEUE - IP: 138.255.65.52 - May 26 15:57:43 plesk postfix/smtpd[3167192]: NOQUEUE: reject: RCPT from unknown[138.255.65.52]: 554 5.7.1 Service unavailable; Client host [138.255.65.52] blocked using dnsbl-1.uceprotect.net; IP 138.255.65.52 is UCEPROTECT-Level 1 listed. See http://www.uceprotect.net/rblcheck.php?ipr=138.255.65.52; from=<REDACTED@REDACTED> to=<REDACTED@REDACTED> proto=ESMTP helo=<138-255-65-52.telfo.com.br> show less	Email Spam

Showing 1 to 15 of 21 reports

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