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

104.171.28.20

Recent Activity

Abuse confidence score ?

12% Caution

23 reports

12 reporters · latest 1 day ago

ISP	Dot Holding, Inc.
Usage Type	Fixed Line ISP
ASN	AS7029
Hostname(s)	prd-bd-k50zrc.cleancontactlist.com
Domain Name	dotology.com
Country	🇺🇸 United States of America
City	Watervliet, Michigan

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 104.171.28.20

Export CSV

This IP address has been reported a total of 23 times from 12 distinct sources. 104.171.28.20 was first reported on March 26th 2024, and the most recent report was 1 day ago. In the last 60 days, the top reporter locations were: Germany with 1 report; Italy with 1 report. The most common categories in these recent reports were: Email Spam 2 times; Spoofing 1 time.

Reporter	IoA Timestamp (UTC)	Comment	Categories
🇮🇹 LTM	2026-10-07 06:20:01 (1 day ago)	Mail - Generic Spam	Email Spam Spoofing
🇩🇪 ksol-hostmaster	2026-09-09 03:05:42 (4 weeks ago)	Sep 9 05:05:41 ksol postfix/postscreen[48626]: NOQUEUE: reject: RCPT from [104.171.28.20]:44101: 55 ... show more Sep 9 05:05:41 ksol postfix/postscreen[48626]: NOQUEUE: reject: RCPT from [104.171.28.20]:44101: 550 5.7.1 Service unavailable; client [104.171.28.20] blocked using zen.spamhaus.org; from=<anonymized@email>, to=<anonymized@email>, proto=ESMTP, helo=<prd-bd-K50ZRC.cleancontactlist.com> ... show less	Email Spam
🇩🇪 FD-IX	2026-08-01 18:42:35 (2 months ago)	SMTP connection rejected due to zen.spamhaus.org listing.	Email Spam
🇺🇸 DiodeDave	2026-07-20 22:11:27 (2 months ago)	Attempted access after blacklisting	Email Spam
🇨🇭 Origon	2026-07-20 01:40:24 (2 months ago)	NOQUEUE - IP: 104.171.28.20 - Jul 20 03:40:24 plesk postfix/smtpd[1469896]: NOQUEUE: reject: RCPT f ... show more NOQUEUE - IP: 104.171.28.20 - Jul 20 03:40:24 plesk postfix/smtpd[1469896]: NOQUEUE: reject: RCPT from prd-bd-K50ZRC.cleancontactlist.com[104.171.28.20]: 554 5.7.1 Service unavailable; Client host [104.171.28.20] blocked using dnsbl-1.uceprotect.net; IP 104.171.28.20 is UCEPROTECT-Level 1 listed. See http://www.uceprotect.net/rblcheck.php?ipr=104.171.28.20; from=<[email protected]> to=<REDACTED@REDACTED> proto=ESMTP helo=<prd-bd-K50ZRC.cleancontactlist.com> show less	Email Spam
🇨🇭 Origon	2026-07-12 16:51:37 (2 months ago)	NOQUEUE - IP: 104.171.28.20 - Jul 12 18:51:37 plesk postfix/smtpd[236601]: NOQUEUE: reject: RCPT fr ... show more NOQUEUE - IP: 104.171.28.20 - Jul 12 18:51:37 plesk postfix/smtpd[236601]: NOQUEUE: reject: RCPT from prd-bd-K50ZRC.cleancontactlist.com[104.171.28.20]: 554 5.7.1 Service unavailable; Client host [104.171.28.20] blocked using dnsbl-1.uceprotect.net; IP 104.171.28.20 is UCEPROTECT-Level 1 listed. See http://www.uceprotect.net/rblcheck.php?ipr=104.171.28.20; from=<[email protected]> to=<REDACTED@REDACTED> proto=ESMTP helo=<prd-bd-K50ZRC.cleancontactlist.com> show less	Email Spam
🇸🇪 gandalf	2026-07-08 04:24:58 (3 months ago)	2026-07-08 06:24:56 wonderland sendmail[1163433]: 6684Oo3r1163433: ruleset=check_rcpt, arg1=<lena.be ... show more 2026-07-08 06:24:56 wonderland sendmail[1163433]: 6684Oo3r1163433: ruleset=check_rcpt, arg1=<[email protected]>, relay=prd-bd-K50ZRC.cleancontactlist.com [104.171.28.20], reject=550 5.7.1 <[email protected]>... Mail from 104.171.28.20 refused - see http://www.spamhaus.org/zen/ show less	Brute-Force Email Spam
🇱🇻 garmtech.com	2026-07-03 20:25:44 (3 months ago)	IP Address black-listed by anti-spam (blocked).	Email Spam
🇨🇭 Origon	2026-06-11 14:54:57 (3 months ago)	NOQUEUE - IP: 104.171.28.20 - Jun 11 16:54:56 plesk postfix/smtpd[3696450]: NOQUEUE: reject: RCPT f ... show more NOQUEUE - IP: 104.171.28.20 - Jun 11 16:54:56 plesk postfix/smtpd[3696450]: NOQUEUE: reject: RCPT from prd-bd-K50ZRC.cleancontactlist.com[104.171.28.20]: 554 5.7.1 Service unavailable; Client host [104.171.28.20] blocked using dnsbl-1.uceprotect.net; IP 104.171.28.20 is UCEPROTECT-Level 1 listed. See http://www.uceprotect.net/rblcheck.php?ipr=104.171.28.20; from=<[email protected]> to=<REDACTED@REDACTED> proto=SMTP helo=<prd-bd-K50ZRC.cleancontactlist.com> show less	Email Spam
🇨🇭 Origon	2026-06-07 14:20:43 (4 months ago)	NOQUEUE - IP: 104.171.28.20 - Jun 7 16:20:42 plesk postfix/smtpd[712367]: NOQUEUE: reject: RCPT fro ... show more NOQUEUE - IP: 104.171.28.20 - Jun 7 16:20:42 plesk postfix/smtpd[712367]: NOQUEUE: reject: RCPT from prd-bd-K50ZRC.cleancontactlist.com[104.171.28.20]: 554 5.7.1 Service unavailable; Client host [104.171.28.20] blocked using dnsbl-1.uceprotect.net; IP 104.171.28.20 is UCEPROTECT-Level 1 listed. See http://www.uceprotect.net/rblcheck.php?ipr=104.171.28.20; from=<[email protected]> to=<REDACTED@REDACTED> proto=SMTP helo=<prd-bd-K50ZRC.cleancontactlist.com> show less	Email Spam
🇨🇭 Origon	2026-06-06 04:27:47 (4 months ago)	NOQUEUE - IP: 104.171.28.20 - Jun 6 06:27:47 plesk postfix/smtpd[2853859]: NOQUEUE: reject: RCPT fr ... show more NOQUEUE - IP: 104.171.28.20 - Jun 6 06:27:47 plesk postfix/smtpd[2853859]: NOQUEUE: reject: RCPT from prd-bd-K50ZRC.cleancontactlist.com[104.171.28.20]: 554 5.7.1 Service unavailable; Client host [104.171.28.20] blocked using dnsbl-1.uceprotect.net; IP 104.171.28.20 is UCEPROTECT-Level 1 listed. See http://www.uceprotect.net/rblcheck.php?ipr=104.171.28.20; from=<[email protected]> to=<REDACTED@REDACTED> proto=SMTP helo=<prd-bd-K50ZRC.cleancontactlist.com> show less	Email Spam
🇨🇭 Origon	2026-06-01 09:16:07 (4 months ago)	NOQUEUE - IP: 104.171.28.20 - Jun 1 11:16:06 plesk postfix/smtpd[2829602]: NOQUEUE: reject: RCPT fr ... show more NOQUEUE - IP: 104.171.28.20 - Jun 1 11:16:06 plesk postfix/smtpd[2829602]: NOQUEUE: reject: RCPT from prd-bd-K50ZRC.cleancontactlist.com[104.171.28.20]: 554 5.7.1 Service unavailable; Client host [104.171.28.20] blocked using dnsbl-2.uceprotect.net; Net 104.171.24.0/21 is UCEPROTECT-Level2 listed because 72 impacts are seen from WINDSTREAM, US/AS7029 there. See: http://www.uceprotect.net/rblcheck.php?ipr=104.171.28.20 / Net 104.171.28.0/22 is UCEPROTECT-Level2 listed because 67 impacts are seen from WINDSTREAM, US/AS7029 there. See: http://www.uceprotect.net/rblcheck.php?ipr=104.171.28.20; from=<[email protected]> to=<REDACTED@REDACTED> proto=ESMTP helo=<prd-bd-K50ZRC.cleancontactlist.com> show less	Email Spam
🇨🇭 Origon	2026-05-10 21:29:55 (4 months ago)	NOQUEUE - IP: 104.171.28.20 - May 10 23:29:54 plesk postfix/smtpd[1257817]: NOQUEUE: reject: RCPT f ... show more NOQUEUE - IP: 104.171.28.20 - May 10 23:29:54 plesk postfix/smtpd[1257817]: NOQUEUE: reject: RCPT from prd-bd-K50ZRC.cleancontactlist.com[104.171.28.20]: 554 5.7.1 Service unavailable; Client host [104.171.28.20] blocked using dnsbl-1.uceprotect.net; IP 104.171.28.20 is UCEPROTECT-Level 1 listed. See http://www.uceprotect.net/rblcheck.php?ipr=104.171.28.20; from=<[email protected]> to=<REDACTED@REDACTED> proto=SMTP helo=<prd-bd-K50ZRC.cleancontactlist.com> show less	Email Spam
🇨🇭 Origon	2026-04-22 01:44:29 (5 months ago)	NOQUEUE - IP: 104.171.28.20 - Apr 22 03:44:29 plesk postfix/smtpd[1536758]: NOQUEUE: reject: RCPT f ... show more NOQUEUE - IP: 104.171.28.20 - Apr 22 03:44:29 plesk postfix/smtpd[1536758]: NOQUEUE: reject: RCPT from prd-bd-K50ZRC.cleancontactlist.com[104.171.28.20]: 554 5.7.1 Service unavailable; Client host [104.171.28.20] blocked using dnsbl-2.uceprotect.net; Net 104.171.28.0/22 is UCEPROTECT-Level2 listed because 152 impacts are seen from WINDSTREAM, US/AS7029 there. See: http://www.uceprotect.net/rblcheck.php?ipr=104.171.28.20 / Net 104.171.24.0/21 is UCEPROTECT-Level2 listed because 173 impacts are seen from WINDSTREAM, US/AS7029 there. See: http://www.uceprotect.net/rblcheck.php?ipr=104.171.28.20; from=<[email protected]> to=<REDACTED@REDACTED> proto=SMTP helo=<prd-bd-K50ZRC.cleancontactlist.com> show less	Email Spam
🇨🇭 Origon	2026-03-17 16:23:54 (6 months ago)	NOQUEUE - IP: 104.171.28.20 - Mar 17 17:23:53 plesk postfix/smtpd[49399]: NOQUEUE: reject: RCPT fro ... show more NOQUEUE - IP: 104.171.28.20 - Mar 17 17:23:53 plesk postfix/smtpd[49399]: NOQUEUE: reject: RCPT from prd-bd-K50ZRC.cleancontactlist.com[104.171.28.20]: 554 5.7.1 Service unavailable; Client host [104.171.28.20] blocked using dnsbl-2.uceprotect.net; Net 104.171.24.0/21 is UCEPROTECT-Level2 listed because 165 impacts are seen from WINDSTREAM, US/AS7029 there. See: http://www.uceprotect.net/rblcheck.php?ipr=104.171.28.20 / Net 104.171.28.0/22 is UCEPROTECT-Level2 listed because 161 impacts are seen from WINDSTREAM, US/AS7029 there. See: http://www.uceprotect.net/rblcheck.php?ipr=104.171.28.20; from=<[email protected]> to=<REDACTED@REDACTED> proto=ESMTP helo=<prd-bd-K50ZRC.cleancontactlist.com> show less	Email Spam

Showing 1 to 15 of 23 reports

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

Recently Reported IPs:

🇨🇦 85.217.149.59

🇺🇸 72.211.58.153

🇺🇸 62.11.129.215

🇨🇳 36.135.62.97

🇺🇸 35.211.45.24

🇦🇺 20.5.85.204

🇯🇵 8.216.17.118

🇪🇹 196.191.32.17

🇸🇬 167.172.64.200

🇺🇸 166.1.56.226

🇬🇧 157.245.34.56

🇬🇧 141.101.98.86

🇸🇬 129.226.153.214

🇵🇰 119.152.199.92

🇺🇸 104.196.19.34

🇷🇺 95.108.213.233

🇮🇳 64.227.190.118

🇮🇳 42.108.125.85

🇨🇦 212.104.215.8

🇷🇴 92.118.39.71