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AbuseIPDB » 203.189.153.34

203.189.153.34 was found in our database!

This IP was reported 87 times. Confidence of Abuse is 43%: ?

43%

ISP	Cogetel Ltd, Online ISP, Cambodia
Usage Type	Fixed Line ISP
ASN	AS23673
Hostname(s)	headquarter.online.com.kh
Domain Name	online.com.kh
Country	🇰🇭 Cambodia
City	Phnom Penh, Phnom Penh

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

Report 203.189.153.34

Whois 203.189.153.34

IP Abuse Reports for 203.189.153.34:

This IP address has been reported a total of 87 times from 44 distinct sources. 203.189.153.34 was first reported on May 19th 2023, and the most recent report was 19 hours 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	2026-06-15 09:36:55 (19 hours ago)	NOQUEUE - IP: 203.189.153.34 - Jun 15 11:36:55 plesk postfix/smtpd[1596333]: NOQUEUE: reject: RCPT ... show more NOQUEUE - IP: 203.189.153.34 - Jun 15 11:36:55 plesk postfix/smtpd[1596333]: NOQUEUE: reject: RCPT from unknown[203.189.153.34]: 554 5.7.1 Service unavailable; Client host [203.189.153.34] blocked using dnsbl-1.uceprotect.net; IP 203.189.153.34 is UCEPROTECT-Level 1 listed. See http://www.uceprotect.net/rblcheck.php?ipr=203.189.153.34; from=<REDACTED@REDACTED> to=<REDACTED@REDACTED> proto=ESMTP helo=<headquarter.online.com.kh> show less	Email Spam
🇩🇪 ksol-hostmaster	2026-06-10 18:07:06 (5 days ago)	Jun 10 20:07:05 ksol postfix/postscreen[90243]: NOQUEUE: reject: RCPT from [203.189.153.34]:49671: 5 ... show more Jun 10 20:07:05 ksol postfix/postscreen[90243]: NOQUEUE: reject: RCPT from [203.189.153.34]:49671: 550 5.7.1 Service unavailable; client [203.189.153.34] blocked using bl.spamcop.net; from=<anonymized@email>, to=<anonymized@email>, proto=ESMTP, helo=<headquarter.online.com.kh> ... show less	Email Spam
🇨🇿 interconnect.cz	2026-06-07 19:38:39 (1 week ago)	[07/Jun/2026 21:38:38] IP address 203.189.153.34 found in DNS blacklist SpamCop, mail from <drbala63 ... show more [07/Jun/2026 21:38:38] IP address 203.189.153.34 found in DNS blacklist SpamCop, mail from <[email protected]> to <[email protected]> [07/Jun/2026 21:38:38] IP address 203.189.153.34 found in DNS blacklist SpamHaus SBL-XBL, mail from <[email protected]> to <[email protected]> [07/Jun/2026 21:38:38] IP address 203.189.153.34 found in DNS blacklist SpamHaus SBL-XBL, mail from <[email protected]> to <[email protected]> ... show less	Brute-Force Email Spam
🇨🇿 interconnect.cz	2026-06-07 14:59:49 (1 week ago)	[07/Jun/2026 16:59:48] IP address 203.189.153.34 found in DNS blacklist SpamCop, mail from <goro@2go ... show more [07/Jun/2026 16:59:48] IP address 203.189.153.34 found in DNS blacklist SpamCop, mail from <[email protected]> to <[email protected]> [07/Jun/2026 16:59:48] IP address 203.189.153.34 found in DNS blacklist SpamHaus SBL-XBL, mail from <[email protected]> to <[email protected]> [07/Jun/2026 16:59:49] IP address 203.189.153.34 found in DNS blacklist SpamHaus SBL-XBL, mail from <[email protected]> to <[email protected]> ... show less	Brute-Force Email Spam
🇩🇪 Viveronese	2026-06-01 17:59:02 (2 weeks ago)	SASL LOGIN authentication failed	Brute-Force
Anonymous	2026-05-30 11:22:22 (2 weeks ago)	SMTP scanner - relay access denied	Brute-Force Exploited Host
🇨🇭 Origon	2026-05-29 16:20:21 (2 weeks ago)	NOQUEUE - IP: 203.189.153.34 - May 29 18:20:21 plesk postfix/smtpd[1207918]: NOQUEUE: reject: RCPT ... show more NOQUEUE - IP: 203.189.153.34 - May 29 18:20:21 plesk postfix/smtpd[1207918]: NOQUEUE: reject: RCPT from unknown[203.189.153.34]: 554 5.7.1 Service unavailable; Client host [203.189.153.34] blocked using dnsbl-1.uceprotect.net; IP 203.189.153.34 is UCEPROTECT-Level 1 listed. See http://www.uceprotect.net/rblcheck.php?ipr=203.189.153.34; from=<REDACTED@REDACTED> to=<REDACTED@REDACTED> proto=ESMTP helo=<headquarter.online.com.kh> show less	Email Spam
🇩🇪 Viveronese	2026-05-29 15:08:06 (2 weeks ago)	SASL LOGIN authentication failed	Brute-Force
🇩🇪 Viveronese	2026-05-27 22:57:43 (2 weeks ago)	SASL LOGIN authentication failed	Brute-Force
🇨🇭 Origon	2026-05-26 11:45:38 (2 weeks ago)	NOQUEUE - IP: 203.189.153.34 - May 26 13:45:37 plesk postfix/smtpd[2976055]: NOQUEUE: reject: RCPT ... show more NOQUEUE - IP: 203.189.153.34 - May 26 13:45:37 plesk postfix/smtpd[2976055]: NOQUEUE: reject: RCPT from unknown[203.189.153.34]: 554 5.7.1 Service unavailable; Client host [203.189.153.34] blocked using dnsbl-1.uceprotect.net; IP 203.189.153.34 is UCEPROTECT-Level 1 listed. See http://www.uceprotect.net/rblcheck.php?ipr=203.189.153.34; from=<REDACTED@REDACTED> to=<REDACTED@REDACTED> proto=ESMTP helo=<203.189.153.34> show less	Email Spam
🇬🇧 Bytemark	2026-05-24 12:19:20 (3 weeks ago)	May 24 13:19:19 dlcentre3 postfix/smtpd[29261]: NOQUEUE: reject: RCPT from unknown[203.189.153.34]: ... show more May 24 13:19:19 dlcentre3 postfix/smtpd[29261]: NOQUEUE: reject: RCPT from unknown[203.189.153.34]: 554 5.7.1 Service unavailable; Client host [203.189.153.34] blocked using cbl.abuseat.org; Listed by XBL, see https://check.spamhaus.org/query/ip/203.189.153.34; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<headquarter.online.com.kh> show less	Email Spam Spoofing Brute-Force Exploited Host
Anonymous	2026-05-14 14:50:31 (1 month ago)	Inbound email denied: 1 rejected connection(s) in 24h detected by CRMON security monitor. AbuseIPDB ... show more Inbound email denied: 1 rejected connection(s) in 24h detected by CRMON security monitor. AbuseIPDB confidence score at block time: 29%. show less	Email Spam
🇫🇮 notelseit	2026-05-11 02:42:32 (1 month ago)	2026-05-11T04:42:19.483705+02:00 mail postfix/submission/smtpd[186699]: warning: unknown[203.189.153 ... show more 2026-05-11T04:42:19.483705+02:00 mail postfix/submission/smtpd[186699]: warning: unknown[203.189.153.34]: SASL LOGIN authentication failed: (reason unavailable), [email protected] 2026-05-11T04:42:20.161889+02:00 mail postfix/submission/smtpd[186699]: disconnect from unknown[203.189.153.34] ehlo=2 starttls=1 auth=0/1 commands=3/4 2026-05-11T04:42:32.486404+02:00 mail postfix/submission/smtpd[186699]: warning: unknown[203.189.153.34]: SASL LOGIN authentication failed: (reason unavailable), [email protected] ... show less	Brute-Force Email Spam
🇯🇵 Kinsei Engineering Inc.	2026-05-08 13:21:48 (1 month ago)	Postfix,Possible SPAM, Postscreen, Received incorrect commands at a high frequency.	Brute-Force Email Spam
🇨🇭 Origon	2026-04-29 14:53:53 (1 month ago)	NOQUEUE - IP: 203.189.153.34 - Apr 29 16:53:53 plesk postfix/smtpd[2834031]: NOQUEUE: reject: RCPT ... show more NOQUEUE - IP: 203.189.153.34 - Apr 29 16:53:53 plesk postfix/smtpd[2834031]: NOQUEUE: reject: RCPT from unknown[203.189.153.34]: 554 5.7.1 Service unavailable; Client host [203.189.153.34] blocked using dnsbl-1.uceprotect.net; IP 203.189.153.34 is UCEPROTECT-Level 1 listed. See http://www.uceprotect.net/rblcheck.php?ipr=203.189.153.34; from=<REDACTED@REDACTED> to=<REDACTED@REDACTED> proto=ESMTP helo=<headquarter.online.com.kh> show less	Email Spam

Showing 1 to 15 of 87 reports

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