JavaScript is disabled. Some features of this site may not work properly. For a smoother experience, please enable JavaScript in your browser settings.

168.245.100.91

Recent Activity

Abuse confidence score ?

25% Elevated

11 reports

8 reporters · latest 4 days ago

ISP	SendGrid, Inc.
Usage Type	Data Center/Web Hosting/Transit
ASN	AS11377
Hostname(s)	o6.ptr4169.mail.anthropic.com
Domain Name	twilio.com
Country	🇺🇸 United States of America
City	Leesburg, Virginia

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

Report Whois

Reports Activity

Example preview

Report Categories (Last 60 Days)

Example preview

Top Reporter Countries (Last 60 Days)

Example preview

Account required for the enhanced features Log in Sign up

IP Abuse Reports for 168.245.100.91

Export CSV

This IP address has been reported a total of 11 times from 8 distinct sources. 168.245.100.91 was first reported on August 21st 2025, and the most recent report was 4 days ago. In the last 60 days, the top reporter locations were: Switzerland with 1 report; Germany with 1 report; Finland with 1 report. The most common categories in these recent reports were: Email Spam 3 times; Exploited Host 1 time; Brute-Force 1 time.

Reporter	IoA Timestamp (UTC)	Comment	Categories
🇨🇭 Origon	2026-09-28 15:25:22 (4 days ago)	NOQUEUE - IP: 168.245.100.91 - Sep 28 17:25:22 plesk postfix/smtpd[1274842]: NOQUEUE: reject_warnin ... show more NOQUEUE - IP: 168.245.100.91 - Sep 28 17:25:22 plesk postfix/smtpd[1274842]: NOQUEUE: reject_warning: RCPT from o6.ptr4169.mail.anthropic.com[168.245.100.91]: 554 5.7.1 Service unavailable; Client host [168.245.100.91] blocked using dnsbl-3.uceprotect.net; Your ISP SENDGRID, US/AS11377 is UCEPROTECT-Level3 listed because of a spamscore of 59.9. See: http://www.uceprotect.net/rblcheck.php?ipr=168.245.100.91; from=<REDACTED@REDACTED> to=<REDACTED@REDACTED> proto=ESMTP helo=<o6.ptr4169.mail.anthropic.com> show less	Email Spam
Anonymous	2026-09-25 03:15:32 (1 week ago)	SMTP scanner - relay access denied	Brute-Force Exploited Host
🇩🇪 FD-IX	2026-09-08 18:55:25 (3 weeks ago)	SMTP connection rejected due to bl.spamcop.net listing.	Email Spam
🇫🇮 MostHosted	2026-09-01 11:28:22 (1 month ago)	Spam Sender	Email Spam
🇹🇷 SeczarSecureOps	2026-07-10 06:54:45 (2 months ago)	Seczar SecureOps — FortiMail virus: 1 virus-laden message(s) — sender(s): bounces+31859940-6c38-kazi ... show more Seczar SecureOps — FortiMail virus: 1 virus-laden message(s) — sender(s): bounces+31859940-6c38-kazimcan=tcddteknik.com.tr@em9672.mail.anthropic.com show less	Phishing Email Spam
🇨🇭 Origon	2026-07-08 08:29:04 (2 months ago)	NOQUEUE - IP: 168.245.100.91 - Jul 8 10:29:04 plesk postfix/smtpd[748493]: NOQUEUE: reject: RCPT fr ... show more NOQUEUE - IP: 168.245.100.91 - Jul 8 10:29:04 plesk postfix/smtpd[748493]: NOQUEUE: reject: RCPT from o6.ptr4169.mail.anthropic.com[168.245.100.91]: 554 5.7.1 Service unavailable; Client host [168.245.100.91] blocked using dnsbl-3.uceprotect.net; Your ISP SENDGRID, US/AS11377 is UCEPROTECT-Level3 listed because of a spamscore of 95.2. See: http://www.uceprotect.net/rblcheck.php?ipr=168.245.100.91; from=<REDACTED@REDACTED> to=<REDACTED@REDACTED> proto=ESMTP helo=<o6.ptr4169.mail.anthropic.com> show less	Email Spam
🇬🇧 transcom	2026-04-29 15:32:13 (5 months ago)	Spam #3 to centralmail.co.uk (trap_type=efa_production, from=em9672.mail.anthropic.com)	Web Spam
🇫🇷 solution.it	2026-04-03 15:42:47 (5 months ago)		Email Spam
🇬🇧 transcom	2026-03-24 18:07:17 (6 months ago)	Spam #2 to centralmail.co.uk (trap_type=efa_production, from=em9672.mail.anthropic.com)	Web Spam
🇨🇭 Origon	2025-12-16 20:34:06 (9 months ago)	NOQUEUE - IP: 168.245.100.91 - Dec 16 21:34:06 plesk postfix/smtpd[2661967]: NOQUEUE: reject: RCPT ... show more NOQUEUE - IP: 168.245.100.91 - Dec 16 21:34:06 plesk postfix/smtpd[2661967]: NOQUEUE: reject: RCPT from o6.ptr4169.mail.anthropic.com[168.245.100.91]: 554 5.7.1 Service unavailable; Client host [168.245.100.91] blocked using dnsbl-3.uceprotect.net; Your ISP SENDGRID, US/AS11377 is UCEPROTECT-Level3 listed because of a spamscore of 316.7. See: http://www.uceprotect.net/rblcheck.php?ipr=168.245.100.91; from=<REDACTED@REDACTED> to=<REDACTED@REDACTED> proto=ESMTP helo=<o6.ptr4169.mail.anthropic.com> show less	Email Spam
Anonymous	2025-08-21 04:57:40 (1 year ago)	Automated abuse report: Generic unknown (x6).	Email Spam Brute-Force

Showing 1 to 11 of 11 reports

Think this IP has been falsely reported? You may request to have the associated reports reviewed and removed. Request Takedown 🚩

Recently Reported IPs:

🇧🇬 193.24.211.218

🇨🇴 181.54.70.40

🇺🇸 164.92.117.229

🇳🇱 130.12.180.155

🇺🇸 107.0.200.227

🇮🇳 103.58.153.134

🇺🇸 91.230.168.221

🇺🇸 65.49.1.178

🇺🇸 47.85.183.250

🇫🇷 46.105.31.171

🇧🇷 45.229.13.67

🇨🇴 38.225.57.46

🇬🇧 35.203.211.16

🇰🇷 1.250.67.190

🇺🇸 199.182.214.84

🇸🇻 190.87.168.137

🇨🇴 190.60.34.210

🇲🇽 187.216.224.85

🇪🇨 186.71.3.33

🇨🇱 179.60.68.99