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AbuseIPDB » 5.166.40.38

5.166.40.38 was found in our database!

This IP was reported 18 times. Confidence of Abuse is 21%: ?

21%

ISP	CJSC ER-Telecom Holding Yekaterinburg branch
Usage Type	Fixed Line ISP
ASN	AS51604
Hostname(s)	5x166x40x38.static-business.ekat.ertelecom.ru
Domain Name	ertelecom.ru
Country	🇷🇺 Russian Federation
City	Yekaterinburg, Sverdlovsk Oblast

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

Report 5.166.40.38

Whois 5.166.40.38

IP Abuse Reports for 5.166.40.38:

This IP address has been reported a total of 18 times from 7 distinct sources. 5.166.40.38 was first reported on August 28th 2025, and the most recent report was 1 week ago.

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

Reporter	IoA Timestamp (UTC)	Comment	Categories
🇨🇭 Origon	2026-06-16 15:54:36 (1 week ago)	NOQUEUE - IP: 5.166.40.38 - Jun 16 17:54:36 plesk postfix/smtpd[4168846]: NOQUEUE: reject: RCPT fro ... show more NOQUEUE - IP: 5.166.40.38 - Jun 16 17:54:36 plesk postfix/smtpd[4168846]: NOQUEUE: reject: RCPT from unknown[5.166.40.38]: 554 5.7.1 Service unavailable; Client host [5.166.40.38] blocked using dnsbl-3.uceprotect.net; Your ISP EKAT-AS, RU/AS51604 is UCEPROTECT-Level3 listed because of a spamscore of 71.1. See: http://www.uceprotect.net/rblcheck.php?ipr=5.166.40.38; from=<REDACTED@REDACTED> to=<REDACTED@REDACTED> proto=ESMTP helo=<[5.166.40.38]> show less	Email Spam
🇳🇱 soverin	2026-06-11 05:13:04 (2 weeks ago)	spam	Email Spam
🇳🇱 soverin	2026-06-08 07:23:04 (2 weeks ago)	spam	Email Spam
🇨🇭 Origon	2026-06-08 05:40:46 (2 weeks ago)	NOQUEUE - IP: 5.166.40.38 - Jun 8 07:40:46 plesk postfix/smtpd[1618564]: NOQUEUE: reject: RCPT from ... show more NOQUEUE - IP: 5.166.40.38 - Jun 8 07:40:46 plesk postfix/smtpd[1618564]: NOQUEUE: reject: RCPT from unknown[5.166.40.38]: 554 5.7.1 Service unavailable; Client host [5.166.40.38] blocked using b.barracudacentral.org; http://www.barracudanetworks.com/reputation/?pr=1&ip=5.166.40.38; from=<[email protected]> to=<REDACTED@REDACTED> proto=ESMTP helo=<[5.166.40.38]> show less	Email Spam
🇳🇱 soverin	2026-06-05 10:38:04 (3 weeks ago)	spam	Email Spam
🇳🇱 soverin	2026-05-29 17:31:03 (4 weeks ago)	spam	Email Spam
🇩🇪 NewGastroline	2026-05-29 13:37:36 (4 weeks ago)	Malicious request blocked by CrowdSec on gastro-prod1.boreus.de	Bad Web Bot Web App Attack
🇳🇱 soverin	2026-05-27 20:46:13 (1 month ago)	spam	Email Spam
🇫🇮 notelseit	2026-05-25 03:53:40 (1 month ago)	2026-05-25T05:53:11.149358+02:00 mail postfix/smtpd[2478657]: NOQUEUE: reject: RCPT from unknown[5.1 ... show more 2026-05-25T05:53:11.149358+02:00 mail postfix/smtpd[2478657]: NOQUEUE: reject: RCPT from unknown[5.166.40.38]: 450 4.7.25 Client host rejected: cannot find your hostname, [5.166.40.38]; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<[5.166.40.38]> 2026-05-25T05:53:11.197179+02:00 mail postfix/smtpd[2478657]: lost connection after RCPT from unknown[5.166.40.38] 2026-05-25T05:53:39.612203+02:00 mail postfix/smtpd[2481891]: NOQUEUE: reject: RCPT from unknown[5.166.40.38]: 450 4.7.25 Client host rejected: cannot find your hostname, [5.166.40.38]; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<[5.166.40.38]> ... show less	Brute-Force Email Spam
🇳🇱 soverin	2026-05-23 14:10:02 (1 month ago)	spam	Email Spam
🇫🇮 notelseit	2026-05-19 11:54:27 (1 month ago)	2026-05-19T13:54:00.615501+02:00 mail postfix/smtpd[1544305]: NOQUEUE: reject: RCPT from unknown[5.1 ... show more 2026-05-19T13:54:00.615501+02:00 mail postfix/smtpd[1544305]: NOQUEUE: reject: RCPT from unknown[5.166.40.38]: 450 4.7.25 Client host rejected: cannot find your hostname, [5.166.40.38]; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<[5.166.40.38]> 2026-05-19T13:54:00.660442+02:00 mail postfix/smtpd[1544305]: lost connection after RCPT from unknown[5.166.40.38] 2026-05-19T13:54:26.763270+02:00 mail postfix/smtpd[1539234]: NOQUEUE: reject: RCPT from unknown[5.166.40.38]: 450 4.7.25 Client host rejected: cannot find your hostname, [5.166.40.38]; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<[5.166.40.38]> ... show less	Brute-Force Email Spam
🇫🇮 notelseit	2026-05-17 22:35:22 (1 month ago)	2026-05-18T00:32:59.753798+02:00 mail postfix/smtpd[1293770]: NOQUEUE: reject: RCPT from unknown[5.1 ... show more 2026-05-18T00:32:59.753798+02:00 mail postfix/smtpd[1293770]: NOQUEUE: reject: RCPT from unknown[5.166.40.38]: 450 4.7.25 Client host rejected: cannot find your hostname, [5.166.40.38]; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<[5.166.40.38]> 2026-05-18T00:32:59.798902+02:00 mail postfix/smtpd[1293770]: lost connection after RCPT from unknown[5.166.40.38] 2026-05-18T00:35:21.681739+02:00 mail postfix/smtpd[1293770]: NOQUEUE: reject: RCPT from unknown[5.166.40.38]: 450 4.7.25 Client host rejected: cannot find your hostname, [5.166.40.38]; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<[5.166.40.38]> ... show less	Brute-Force Email Spam
🇨🇭 Origon	2026-05-10 00:07:14 (1 month ago)	NOQUEUE - IP: 5.166.40.38 - May 10 02:07:13 plesk postfix/smtpd[175818]: NOQUEUE: reject: RCPT from ... show more NOQUEUE - IP: 5.166.40.38 - May 10 02:07:13 plesk postfix/smtpd[175818]: NOQUEUE: reject: RCPT from unknown[5.166.40.38]: 554 5.7.1 Service unavailable; Client host [5.166.40.38] blocked using dnsbl-1.uceprotect.net; IP 5.166.40.38 is UCEPROTECT-Level 1 listed. See http://www.uceprotect.net/rblcheck.php?ipr=5.166.40.38; from=<REDACTED@REDACTED> to=<REDACTED@REDACTED> proto=ESMTP helo=<[5.166.40.38]> show less	Email Spam
🇨🇭 Origon	2026-05-01 11:51:51 (1 month ago)	NOQUEUE - IP: 5.166.40.38 - May 1 13:51:51 plesk postfix/smtpd[2513695]: NOQUEUE: reject: RCPT from ... show more NOQUEUE - IP: 5.166.40.38 - May 1 13:51:51 plesk postfix/smtpd[2513695]: NOQUEUE: reject: RCPT from unknown[5.166.40.38]: 554 5.7.1 Service unavailable; Client host [5.166.40.38] blocked using dnsbl-1.uceprotect.net; IP 5.166.40.38 is UCEPROTECT-Level 1 listed. See http://www.uceprotect.net/rblcheck.php?ipr=5.166.40.38; from=<REDACTED@REDACTED> to=<REDACTED@REDACTED> proto=ESMTP helo=<[5.166.40.38]> show less	Email Spam
🇸🇪 triplecode	2026-04-22 18:29:40 (2 months ago)	Reported from hMailServer	Email Spam

Showing 1 to 15 of 18 reports

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