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198.21.5.109

Recent Activity

Abuse confidence score ?

40% Elevated

174 reports

38 reporters · latest 4 days ago

ISP	SendGrid, Inc.
Usage Type	Data Center/Web Hosting/Transit
ASN	AS11377
Hostname(s)	o1273.shared.klaviyomail.com
Domain Name	twilio.com
Country	🇺🇸 United States of America
City	San Francisco, California

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IP Abuse Reports for 198.21.5.109

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This IP address has been reported a total of 174 times from 38 distinct sources. 198.21.5.109 was first reported on August 6th 2021, and the most recent report was 4 days ago. In the last 60 days, the top reporter locations were: United States of America with 15 reports; Switzerland with 7 reports; Germany with 2 reports. The most common categories in these recent reports were: Email Spam 25 times; Port Scan 1 time; Phishing 1 time.

Reporter	IoA Timestamp (UTC)	Comment	Categories
🇩🇪 MostHosted	2026-10-01 18:01:58 (4 days ago)	Spam Sender	Email Spam
🇨🇭 Origon	2026-10-01 14:20:16 (4 days ago)	NOQUEUE - IP: 198.21.5.109 - Oct 1 16:20:16 plesk postfix/smtpd[2399253]: NOQUEUE: reject: RCPT fro ... show more NOQUEUE - IP: 198.21.5.109 - Oct 1 16:20:16 plesk postfix/smtpd[2399253]: NOQUEUE: reject: RCPT from o1273.shared.klaviyomail.com[198.21.5.109]: 554 5.7.1 Service unavailable; Client host [198.21.5.109] blocked using all.s5h.net; See http://s5h.net/rbl; from=<REDACTED@REDACTED> to=<REDACTED@REDACTED> proto=ESMTP helo=<o1273.shared.klaviyomail.com> show less	Email Spam
🇺🇸 CoffeeDragon	2026-09-30 10:08:21 (5 days ago)	Email spam rejected by SpamAssassin on mail server (port 25) (score 16.4)	Email Spam
Anonymous	2026-09-27 06:52:00 (1 week ago)	E-mail spam at 2026-09-27 06:52 from @k1.send.geurvoorjehuis.nl with score 10	Email Spam
🇨🇭 Origon	2026-09-23 08:57:12 (1 week ago)	NOQUEUE - IP: 198.21.5.109 - Sep 23 10:57:12 plesk postfix/smtpd[1499085]: NOQUEUE: reject: RCPT fr ... show more NOQUEUE - IP: 198.21.5.109 - Sep 23 10:57:12 plesk postfix/smtpd[1499085]: NOQUEUE: reject: RCPT from o1273.shared.klaviyomail.com[198.21.5.109]: 554 5.7.1 Service unavailable; Client host [198.21.5.109] blocked using all.s5h.net; See http://s5h.net/rbl; from=<REDACTED@REDACTED> to=<REDACTED@REDACTED> proto=ESMTP helo=<o1273.shared.klaviyomail.com> show less	Email Spam
🇺🇸 xmission.com	2026-09-16 01:01:30 (2 weeks ago)	Sourced 2 spam messages over 3x XMissions threshold. Highest score: 114.8. Latest msgid suffix: ..._ ... show more Sourced 2 spam messages over 3x XMissions threshold. Highest score: 114.8. Latest msgid suffix: ..._AP2jknKqg show less	Email Spam
🇨🇭 Origon	2026-09-15 06:01:11 (2 weeks ago)	NOQUEUE - IP: 198.21.5.109 - Sep 15 08:01:11 plesk postfix/smtpd[1996124]: NOQUEUE: reject: RCPT fr ... show more NOQUEUE - IP: 198.21.5.109 - Sep 15 08:01:11 plesk postfix/smtpd[1996124]: NOQUEUE: reject: RCPT from o1273.shared.klaviyomail.com[198.21.5.109]: 554 5.7.1 Service unavailable; Client host [198.21.5.109] blocked using all.s5h.net; See http://s5h.net/rbl; from=<REDACTED@REDACTED> to=<REDACTED@REDACTED> proto=ESMTP helo=<o1273.shared.klaviyomail.com> show less	Email Spam
🇺🇸 xmission.com	2026-09-12 17:15:31 (3 weeks ago)	Sourced 1 spam messages over 3x XMissions threshold. Highest score: 110.4. Latest msgid suffix: ...X ... show more Sourced 1 spam messages over 3x XMissions threshold. Highest score: 110.4. Latest msgid suffix: ...XfR8L0rcKA show less	Email Spam
🇺🇸 ive03	2026-09-11 20:20:00 (3 weeks ago)	Authentication-Results: spf=pass (sender IP is 198.21.5.109) smtp.mailfrom=k1.send.kanhabliss.com; ... show more Authentication-Results: spf=pass (sender IP is 198.21.5.109) smtp.mailfrom=k1.send.kanhabliss.com; dkim=pass (signature was verified) header.d=send.kanhabliss.com;dmarc=pass action=none header.from=kanhabliss.com;compauth=pass reason=100 show less	Email Spam Phishing
🇨🇭 Origon	2026-09-11 15:45:31 (3 weeks ago)	NOQUEUE - IP: 198.21.5.109 - Sep 11 17:45:31 plesk postfix/smtpd[511836]: NOQUEUE: reject: RCPT fro ... show more NOQUEUE - IP: 198.21.5.109 - Sep 11 17:45:31 plesk postfix/smtpd[511836]: NOQUEUE: reject: RCPT from o1273.shared.klaviyomail.com[198.21.5.109]: 554 5.7.1 Service unavailable; Client host [198.21.5.109] blocked using all.s5h.net; See http://s5h.net/rbl; from=<REDACTED@REDACTED> to=<REDACTED@REDACTED> proto=ESMTP helo=<o1273.shared.klaviyomail.com> show less	Email Spam
🇨🇭 Origon	2026-09-09 23:31:11 (3 weeks ago)	NOQUEUE - IP: 198.21.5.109 - Sep 10 01:31:11 plesk postfix/smtpd[2031203]: NOQUEUE: reject: RCPT fr ... show more NOQUEUE - IP: 198.21.5.109 - Sep 10 01:31:11 plesk postfix/smtpd[2031203]: NOQUEUE: reject: RCPT from o1273.shared.klaviyomail.com[198.21.5.109]: 554 5.7.1 Service unavailable; Client host [198.21.5.109] blocked using all.s5h.net; See http://s5h.net/rbl; from=<REDACTED@REDACTED> to=<REDACTED@REDACTED> proto=ESMTP helo=<o1273.shared.klaviyomail.com> show less	Email Spam
🇺🇸 xmission.com	2026-09-05 13:46:04 (1 month ago)	Sourced 3 spam messages over 3x XMissions threshold. Highest score: 106.5. Latest msgid suffix: ...0 ... show more Sourced 3 spam messages over 3x XMissions threshold. Highest score: 106.5. Latest msgid suffix: ...0oNSIKMFmQ show less	Email Spam
🇨🇭 Origon	2026-09-01 21:08:40 (1 month ago)	NOQUEUE - IP: 198.21.5.109 - Sep 1 23:08:39 plesk postfix/smtpd[1785475]: NOQUEUE: reject: RCPT fro ... show more NOQUEUE - IP: 198.21.5.109 - Sep 1 23:08:39 plesk postfix/smtpd[1785475]: NOQUEUE: reject: RCPT from o1273.shared.klaviyomail.com[198.21.5.109]: 554 5.7.1 Service unavailable; Client host [198.21.5.109] blocked using dnsbl-3.uceprotect.net; Your ISP SENDGRID, US/AS11377 is UCEPROTECT-Level3 listed because of a spamscore of 189.1. See: http://www.uceprotect.net/rblcheck.php?ipr=198.21.5.109; from=<REDACTED@REDACTED> to=<REDACTED@REDACTED> proto=ESMTP helo=<o1273.shared.klaviyomail.com> show less	Email Spam
🇩🇪 IP Analyzer	2026-08-31 17:30:12 (1 month ago)	Unauthorized connection attempt from IP address 198.21.5.109 on Port 25(SMTP)	Port Scan
🇺🇸 DiodeDave	2026-08-31 16:43:07 (1 month ago)	Attempted access after blacklisting	Email Spam

Showing 1 to 15 of 174 reports

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