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170.203.20.12

Recent Activity

Abuse confidence score ?

31% Elevated

222 reports

12 reporters · latest 20 hours ago

ISP	Klaviyo, Inc
Usage Type	Data Center/Web Hosting/Transit
ASN	AS14618
Hostname(s)	kl-203-20-12.kmta.shared.klaviyomail.com
Domain Name	klaviyo.com
Country	🇺🇸 United States of America
City	Boston, Massachusetts

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IP Abuse Reports for 170.203.20.12

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This IP address has been reported a total of 222 times from 12 distinct sources. 170.203.20.12 was first reported on September 5th 2024, and the most recent report was 20 hours ago. In the last 60 days, the top reporter locations were: United States of America with 22 reports; Switzerland with 7 reports; Finland with 3 reports. The only category in these recent reports was: Email Spam 34 times.

Reporter	IoA Timestamp (UTC)	Comment	Categories
🇨🇭 Origon	2026-10-06 19:10:47 (20 hours ago)	NOQUEUE - IP: 170.203.20.12 - Oct 6 21:10:47 plesk postfix/smtpd[1817249]: NOQUEUE: reject: RCPT fr ... show more NOQUEUE - IP: 170.203.20.12 - Oct 6 21:10:47 plesk postfix/smtpd[1817249]: NOQUEUE: reject: RCPT from kl-203-20-12.kmta.shared.klaviyomail.com[170.203.20.12]: 554 5.7.1 Service unavailable; Client host [170.203.20.12] blocked using bl.0spam.org; Received: from kl-203-20-12.kmta.shared.klaviyomail.com (kl-203-20-12.kmta.shared.klaviyomail.com [170.203.20.12]) Thu, 10 Sep 2026 22:01:47 +0000 Subject: Something's Getting a Diamond Upgrade...; from=<bounce-kl_28054468712-kl_1015twkdnp-h-e3025ab3b8=2@rxtqed.shared.klaviyomail.com> to=<REDACTED@REDACTED> proto=ESMTP helo=<kl-203-20-12.kmta.shared.klaviyomail.com> show less	Email Spam
🇨🇭 Origon	2026-10-03 06:06:17 (4 days ago)	NOQUEUE - IP: 170.203.20.12 - Oct 3 08:06:17 plesk postfix/smtpd[925071]: NOQUEUE: reject: RCPT fro ... show more NOQUEUE - IP: 170.203.20.12 - Oct 3 08:06:17 plesk postfix/smtpd[925071]: NOQUEUE: reject: RCPT from kl-203-20-12.kmta.shared.klaviyomail.com[170.203.20.12]: 554 5.7.1 Service unavailable; Client host [170.203.20.12] blocked using bl.0spam.org; Received: from kl-203-20-12.kmta.shared.klaviyomail.com (kl-203-20-12.kmta.shared.klaviyomail.com [170.203.20.12]) Thu, 10 Sep 2026 22:01:47 +0000 Subject: Something's Getting a Diamond Upgrade...; from=<bounce-kl_28905144013-kl_101101m3kpkqcpv5f0gh-h-b15c8e46e7=2@k3.marketing.andropeak.com> to=<REDACTED@REDACTED> proto=ESMTP helo=<kl-203-20-12.kmta.shared.klaviyomail.com> show less	Email Spam
🇺🇸 DiodeDave	2026-09-30 02:58:10 (1 week ago)	Attempted access after blacklisting	Email Spam
🇨🇭 Origon	2026-09-28 16:07:25 (1 week ago)	NOQUEUE - IP: 170.203.20.12 - Sep 28 18:07:25 plesk postfix/smtpd[1361538]: NOQUEUE: reject: RCPT f ... show more NOQUEUE - IP: 170.203.20.12 - Sep 28 18:07:25 plesk postfix/smtpd[1361538]: NOQUEUE: reject: RCPT from kl-203-20-12.kmta.shared.klaviyomail.com[170.203.20.12]: 554 5.7.1 Service unavailable; Client host [170.203.20.12] blocked using bl.0spam.org; Received: from kl-203-20-12.kmta.shared.klaviyomail.com (kl-203-20-12.kmta.shared.klaviyomail.com [170.203.20.12]) Thu, 10 Sep 2026 22:01:47 +0000 Subject: Something's Getting a Diamond Upgrade...; from=<bounce-kl_28905144013-kl_101101m3ke0x35db1yyt-h-d9806c8daa=2@k3.marketing.andropeak.com> to=<REDACTED@REDACTED> proto=ESMTP helo=<kl-203-20-12.kmta.shared.klaviyomail.com> show less	Email Spam
🇨🇭 Origon	2026-09-23 09:19:38 (2 weeks ago)	NOQUEUE - IP: 170.203.20.12 - Sep 23 11:19:38 plesk postfix/smtpd[1526089]: NOQUEUE: reject: RCPT f ... show more NOQUEUE - IP: 170.203.20.12 - Sep 23 11:19:38 plesk postfix/smtpd[1526089]: NOQUEUE: reject: RCPT from kl-203-20-12.kmta.shared.klaviyomail.com[170.203.20.12]: 554 5.7.1 Service unavailable; Client host [170.203.20.12] blocked using bl.0spam.org; Received: from kl-203-20-12.kmta.shared.klaviyomail.com (kl-203-20-12.kmta.shared.klaviyomail.com [170.203.20.12]) Thu, 10 Sep 2026 22:01:47 +0000 Subject: Something's Getting a Diamond Upgrade...; from=<bounce-kl_26991356937-kl_101101m34gvr9ybykp0w-h-0c0fccd7b1=2@k3.send.nologo-studio.com> to=<REDACTED@REDACTED> proto=ESMTP helo=<kl-203-20-12.kmta.shared.klaviyomail.com> show less	Email Spam
🇺🇸 DiodeDave	2026-09-22 19:59:02 (2 weeks ago)	Attempted access after blacklisting	Email Spam
🇺🇸 xmission.com	2026-09-21 21:45:28 (2 weeks ago)	Sourced 1 spam messages over 3x XMissions threshold. Highest score: 26.8. Latest msgid suffix: ...XZ ... show more Sourced 1 spam messages over 3x XMissions threshold. Highest score: 26.8. Latest msgid suffix: ...XZ776B9QZA show less	Email Spam
🇺🇸 xmission.com	2026-09-20 21:32:36 (2 weeks ago)	Sourced 1 spam messages over 3x XMissions threshold. Highest score: 30.2. Latest msgid suffix: ...J1 ... show more Sourced 1 spam messages over 3x XMissions threshold. Highest score: 30.2. Latest msgid suffix: ...J1F03FBFBK show less	Email Spam
🇺🇸 xmission.com	2026-09-19 13:31:26 (2 weeks ago)	Sourced 2 spam messages over 3x XMissions threshold. Highest score: 33.6. Latest msgid suffix: ...0W ... show more Sourced 2 spam messages over 3x XMissions threshold. Highest score: 33.6. Latest msgid suffix: ...0WFNM3RWJQ show less	Email Spam
🇺🇸 xmission.com	2026-09-18 13:30:34 (2 weeks ago)	Sourced 1 spam messages over 3x XMissions threshold. Highest score: 28.7. Latest msgid suffix: ...WX ... show more Sourced 1 spam messages over 3x XMissions threshold. Highest score: 28.7. Latest msgid suffix: ...WXZA4FG47Q show less	Email Spam
🇨🇭 Origon	2026-09-13 13:01:21 (3 weeks ago)	NOQUEUE - IP: 170.203.20.12 - Sep 13 15:01:21 plesk postfix/smtpd[3294760]: NOQUEUE: reject: RCPT f ... show more NOQUEUE - IP: 170.203.20.12 - Sep 13 15:01:21 plesk postfix/smtpd[3294760]: NOQUEUE: reject: RCPT from kl-203-20-12.kmta.shared.klaviyomail.com[170.203.20.12]: 554 5.7.1 Service unavailable; Client host [170.203.20.12] blocked using bl.0spam.org; Received: from kl-203-20-12.kmta.shared.klaviyomail.com (kl-203-20-12.kmta.shared.klaviyomail.com [170.203.20.12]) Wed, 26 Aug 2026 13:00:33 +0000 Subject: VIP Early Access: Not Your Basic FREE Gift; from=<bounce-kl_25831656616-kl_101101m2am1evxebryp0-h-93cefbbcdb=2@k3.send.heliotemil.com> to=<REDACTED@REDACTED> proto=ESMTP helo=<kl-203-20-12.kmta.shared.klaviyomail.com> show less	Email Spam
🇺🇸 xmission.com	2026-09-12 21:06:27 (3 weeks ago)	Sourced 1 spam messages over 3x XMissions threshold. Highest score: 25.3. Latest msgid suffix: ...ET ... show more Sourced 1 spam messages over 3x XMissions threshold. Highest score: 25.3. Latest msgid suffix: ...ET1XY867XS show less	Email Spam
🇨🇭 Origon	2026-09-11 22:59:23 (3 weeks ago)	NOQUEUE - IP: 170.203.20.12 - Sep 12 00:59:23 plesk postfix/smtpd[1104270]: NOQUEUE: reject: RCPT f ... show more NOQUEUE - IP: 170.203.20.12 - Sep 12 00:59:23 plesk postfix/smtpd[1104270]: NOQUEUE: reject: RCPT from kl-203-20-12.kmta.shared.klaviyomail.com[170.203.20.12]: 554 5.7.1 Service unavailable; Client host [170.203.20.12] blocked using bl.0spam.org; Received: from kl-203-20-12.kmta.shared.klaviyomail.com (kl-203-20-12.kmta.shared.klaviyomail.com [170.203.20.12]) Wed, 26 Aug 2026 13:00:33 +0000 Subject: VIP Early Access: Not Your Basic FREE Gift; from=<bounce-kl_28541261371-kl_1015xrwuih-h-b3bd77482b=2@send.blickers.com> to=<REDACTED@REDACTED> proto=ESMTP helo=<kl-203-20-12.kmta.shared.klaviyomail.com> show less	Email Spam
🇺🇸 xmission.com	2026-09-11 13:57:29 (3 weeks ago)	Sourced 2 spam messages over 3x XMissions threshold. Highest score: 28.9. Latest msgid suffix: ...FQ ... show more Sourced 2 spam messages over 3x XMissions threshold. Highest score: 28.9. Latest msgid suffix: ...FQ9CJ3JV35 show less	Email Spam
🇺🇸 xmission.com	2026-09-08 13:14:27 (4 weeks ago)	Sourced 1 spam messages over 3x XMissions threshold. Highest score: 27.2. Latest msgid suffix: ...YM ... show more Sourced 1 spam messages over 3x XMissions threshold. Highest score: 27.2. Latest msgid suffix: ...YMSJD7V6GG show less	Email Spam

Showing 1 to 15 of 222 reports

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