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AbuseIPDB » 51.161.37.61

51.161.37.61 was found in our database!

This IP was reported 35 times. Confidence of Abuse is 0%: ?

ISP	Dmytro, Ahrefs Pte Ltd
Usage Type	Data Center/Web Hosting/Transit
ASN	AS16276
Hostname(s)	proxy-ca005-san61.ahrefs.net
Domain Name	ahrefs.net
Country	🇨🇦 Canada
City	Beauharnois, Quebec

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

Important Note: 51.161.37.61 is an IP address from within our whitelist belonging to the subnet 51.161.37.0/24, which we identify as: "Ahrefs Crawler".

Whitelisted netblocks are typically owned by trusted entities, such as Google or Microsoft who may use them for search engine spiders. However, these same entities sometimes also provide cloud servers and mail services which are easily abused. Pay special attention when trusting or distrusting these IPs.

Report 51.161.37.61

Whois 51.161.37.61

IP Abuse Reports for 51.161.37.61:

This IP address has been reported a total of 35 times from 14 distinct sources. 51.161.37.61 was first reported on September 1st 2025, and the most recent report was 1 week ago.

Old Reports: The most recent abuse report for this IP address is from 1 week ago . It is possible that this IP is no longer involved in abusive activities.

Reporter	IoA Timestamp (UTC)	Comment	Categories
🇩🇪 ghostwarriors	2026-07-06 10:50:44 (1 week ago)	Webpage scraping	Brute-Force Bad Web Bot Web App Attack
🇩🇪 ghostwarriors	2026-06-16 04:20:20 (1 month ago)	Webpage scraping	Brute-Force Bad Web Bot Web App Attack
🇺🇸 TPI-Abuse	2026-06-11 11:08:58 (1 month ago)	(mod_security) mod_security (id:210730) triggered by 51.161.37.61 (proxy-ca005-san61.ahrefs.net): 1 ... show more (mod_security) mod_security (id:210730) triggered by 51.161.37.61 (proxy-ca005-san61.ahrefs.net): 1 in the last 300 secs; Ports: *; Direction: 1; Trigger: LF_MODSEC; Logs: [Thu Jun 11 07:08:51.478153 2026] [security2:error] [pid 4144:tid 4144] [client 51.161.37.61:52538] ModSecurity: Access denied with code 403 (phase 2). Match of "pmFromFile userdata_wl_extensions" against "TX:extension" required. [file "/etc/apache2/conf.d/modsec_vendor_configs/comodo_apache/10_HTTP_HTTP.conf"] [line "27"] [id "210730"] [rev "5"] [msg "COMODO WAF: URL file extension is restricted by policy\|\|www.med-engineering.com\|F\|2"] [data ".pqbj.med-engineering.com.yyn.cs"] [severity "CRITICAL"] [tag "CWAF"] [tag "HTTP"] [hostname "www.med-engineering.com"] [uri "/ifl.pqbj.med-engineering.com.yyn.cs"] [unique_id "aiqXQw2YbxMiPdzlMq1H4wAAAAY"] show less	Brute-Force Bad Web Bot Web App Attack
🇩🇪 ghostwarriors	2026-06-04 07:20:31 (1 month ago)	Webpage scraping	Brute-Force Bad Web Bot Web App Attack
Anonymous	2026-06-03 09:44:39 (1 month ago)	[osotir.org] httpd-noisy-crawler-swarm: sites=osotir.org; logs=/var/log/httpd/domains/osotir.org.log ... show more [osotir.org] httpd-noisy-crawler-swarm: sites=osotir.org; logs=/var/log/httpd/domains/osotir.org.log; samples=crawler=ahrefsbot \| window=5m \| distinct_ips=109 show less	Hacking Web App Attack
🇺🇸 etu brutus	2026-05-17 05:53:02 (1 month ago)	51.161.37.61 Blocked by [Attack Vector List] ...	Hacking Brute-Force Exploited Host
🇩🇪 ghostwarriors	2026-05-13 13:20:14 (2 months ago)	Webpage scraping	Brute-Force Bad Web Bot Web App Attack
🇺🇸 vdub144	2026-05-11 16:46:02 (2 months ago)	Automated report from Gross Automation security system. \| Attack type: meta_ai_scraper \| Path: /prod ... show more Automated report from Gross Automation security system. \| Attack type: meta_ai_scraper \| Path: /product/exm/881%20SP1612PG \| UA: Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/) \| Blocked by: nginx-bot-hell show less	Bad Web Bot
🇺🇸 TPI-Abuse	2026-05-01 16:52:28 (2 months ago)	(mod_security) mod_security (id:210730) triggered by 51.161.37.61 (proxy-ca005-san61.ahrefs.net): 1 ... show more (mod_security) mod_security (id:210730) triggered by 51.161.37.61 (proxy-ca005-san61.ahrefs.net): 1 in the last 300 secs; Ports: *; Direction: 1; Trigger: LF_MODSEC; Logs: [Fri May 01 12:52:23.052062 2026] [security2:error] [pid 12257:tid 12257] [client 51.161.37.61:27808] ModSecurity: Access denied with code 403 (phase 2). Match of "pmFromFile userdata_wl_extensions" against "TX:extension" required. [file "/etc/apache2/conf.d/modsec_vendor_configs/comodo_apache/10_HTTP_HTTP.conf"] [line "27"] [id "210730"] [rev "5"] [msg "COMODO WAF: URL file extension is restricted by policy\|\|www.med-engineering.com\|F\|2"] [data ".eu.com"] [severity "CRITICAL"] [tag "CWAF"] [tag "HTTP"] [hostname "www.med-engineering.com"] [uri "/mdrd.eu.com"] [unique_id "afTaR6Tm6uMi3nzCCJo1owAAAAM"] show less	Brute-Force Bad Web Bot Web App Attack
🇩🇪 ghostwarriors	2026-04-30 07:51:23 (2 months ago)	Webpage scraping	Brute-Force Bad Web Bot Web App Attack
🇺🇸 TPI-Abuse	2026-04-26 15:25:17 (2 months ago)	(mod_security) mod_security (id:210492) triggered by 51.161.37.61 (proxy-ca005-san61.ahrefs.net): 1 ... show more (mod_security) mod_security (id:210492) triggered by 51.161.37.61 (proxy-ca005-san61.ahrefs.net): 1 in the last 300 secs; Ports: *; Direction: 1; Trigger: LF_MODSEC; Logs: [Sun Apr 26 11:25:12.215391 2026] [security2:error] [pid 8384:tid 8384] [client 51.161.37.61:27274] ModSecurity: Access denied with code 403 (phase 1). Matched phrase ".htaccess" at REQUEST_URI. [file "/etc/apache2/conf.d/modsec_vendor_configs/comodo_apache/02_Global_Generic.conf"] [line "117"] [id "210492"] [rev "3"] [severity "CRITICAL"] [tag "CWAF"] [tag "Generic"] [hostname "networkzone.org"] [uri "/1.htaccess"] [unique_id "ae4uWAE3j80eA9T-Rdr2qAAAAA8"] show less	Brute-Force Bad Web Bot Web App Attack
🇩🇪 ghostwarriors	2026-04-24 00:50:04 (2 months ago)	Webpage scraping	Brute-Force Bad Web Bot Web App Attack
🇺🇸 TPI-Abuse	2026-04-20 02:28:39 (2 months ago)	(mod_security) mod_security (id:210730) triggered by 51.161.37.61 (proxy-ca005-san61.ahrefs.net): 1 ... show more (mod_security) mod_security (id:210730) triggered by 51.161.37.61 (proxy-ca005-san61.ahrefs.net): 1 in the last 300 secs; Ports: *; Direction: 1; Trigger: LF_MODSEC; Logs: [Sun Apr 19 22:28:32.519217 2026] [security2:error] [pid 3553832:tid 3553832] [client 51.161.37.61:43656] ModSecurity: Access denied with code 403 (phase 2). Match of "pmFromFile userdata_wl_extensions" against "TX:extension" required. [file "/etc/apache2/conf.d/modsec_vendor_configs/comodo_apache/10_HTTP_HTTP.conf"] [line "27"] [id "210730"] [rev "5"] [msg "COMODO WAF: URL file extension is restricted by policy\|\|www.kingstoneproperties.com\|F\|2"] [data ".com"] [severity "CRITICAL"] [tag "CWAF"] [tag "HTTP"] [hostname "www.kingstoneproperties.com"] [uri "/[email protected]"] [unique_id "aeWPUNPcH1QFJinavpSMEwAAABw"] show less	Brute-Force Bad Web Bot Web App Attack
🇺🇸 TPI-Abuse	2026-03-18 19:38:08 (3 months ago)	(mod_security) mod_security (id:210730) triggered by 51.161.37.61 (proxy-ca005-san61.ahrefs.net): 1 ... show more (mod_security) mod_security (id:210730) triggered by 51.161.37.61 (proxy-ca005-san61.ahrefs.net): 1 in the last 300 secs; Ports: *; Direction: 1; Trigger: LF_MODSEC; Logs: [Wed Mar 18 15:38:00.578528 2026] [security2:error] [pid 19085:tid 19085] [client 51.161.37.61:21630] ModSecurity: Access denied with code 403 (phase 2). Match of "pmFromFile userdata_wl_extensions" against "TX:extension" required. [file "/etc/apache2/conf.d/modsec_vendor_configs/comodo_apache/10_HTTP_HTTP.conf"] [line "27"] [id "210730"] [rev "5"] [msg "COMODO WAF: URL file extension is restricted by policy\|\|www.citystreetsalon.com\|F\|2"] [data ".fionnardesign.com"] [severity "CRITICAL"] [tag "CWAF"] [tag "HTTP"] [hostname "www.citystreetsalon.com"] [uri "/www.fionnardesign.com"] [unique_id "abr_GDDlZueZI-XfyPPoRgAAABE"] show less	Brute-Force Bad Web Bot Web App Attack
🇹🇷 rtbh.com.tr	2026-03-06 20:11:55 (4 months ago)	list.rtbh.com.tr report: tcp/0	Brute-Force

Showing 1 to 15 of 35 reports

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