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AbuseIPDB » 51.161.65.49

51.161.65.49 was found in our database!

This IP was reported 40 times. Confidence of Abuse is 0%: ?

ISP	Dmytro, Ahrefs Pte Ltd
Usage Type	Data Center/Web Hosting/Transit
ASN	AS16276
Hostname(s)	proxy-ca011-san49.ahrefs.net
Domain Name	ahrefs.net
Country	🇨🇦 Canada
City	Montreal, Quebec

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

Important Note: 51.161.65.49 is an IP address from within our whitelist belonging to the subnet 51.161.65.0/24, 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 51.161.65.49

Whois 51.161.65.49

IP Abuse Reports for 51.161.65.49:

This IP address has been reported a total of 40 times from 11 distinct sources. 51.161.65.49 was first reported on September 14th 2025, and the most recent report was 2 weeks ago.

Old Reports: The most recent abuse report for this IP address is from 2 weeks ago . It is possible that this IP is no longer involved in abusive activities.

Reporter	IoA Timestamp (UTC)	Comment	Categories
🇺🇸 TPI-Abuse	2026-05-30 01:05:47 (2 weeks ago)	(mod_security) mod_security (id:210730) triggered by 51.161.65.49 (proxy-ca011-san49.ahrefs.net): 1 ... show more (mod_security) mod_security (id:210730) triggered by 51.161.65.49 (proxy-ca011-san49.ahrefs.net): 1 in the last 300 secs; Ports: *; Direction: 1; Trigger: LF_MODSEC; Logs: [Fri May 29 21:05:42.440283 2026] [security2:error] [pid 30509:tid 30509] [client 51.161.65.49:55280] 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\|\|livesteamtracks.info\|F\|2"] [data ".freestonerr.com"] [severity "CRITICAL"] [tag "CWAF"] [tag "HTTP"] [hostname "livesteamtracks.info"] [uri "/poi/www.freestonerr.com"] [unique_id "aho35gJUOBLGVXA6VNpNhQAAABc"] show less	Brute-Force Bad Web Bot Web App Attack
🇩🇪 ghostwarriors	2026-05-23 10:50:49 (3 weeks ago)	Webpage scraping	Brute-Force Bad Web Bot Web App Attack
🇩🇪 ghostwarriors	2026-05-21 13:21:05 (3 weeks ago)	Webpage scraping	Brute-Force Bad Web Bot Web App Attack
🇩🇪 rh24	2026-05-05 18:59:10 (1 month ago)	(apache-useragents) Failed apache-useragents trigger with match [redacted] from 51.161.65.49 (CA/Can ... show more (apache-useragents) Failed apache-useragents trigger with match [redacted] from 51.161.65.49 (CA/Canada/proxy-ca011-san49.ahrefs.net) show less	Bad Web Bot
🇺🇸 ambor	2026-05-05 11:25:18 (1 month ago)	Attack type: wordpress_attack_attempt \| Target: /robots.txt \| UA: Mozilla/5.0 (compatible; AhrefsBot ... show more Attack type: wordpress_attack_attempt \| Target: /robots.txt \| UA: Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ah \| Country: CA show less	Web App Attack Brute-Force
🇩🇪 rh24	2026-05-01 09:29:14 (1 month ago)	(apache-useragents) Failed apache-useragents trigger with match [redacted] from 51.161.65.49 (CA/Can ... show more (apache-useragents) Failed apache-useragents trigger with match [redacted] from 51.161.65.49 (CA/Canada/proxy-ca011-san49.ahrefs.net) show less	Bad Web Bot
🇩🇪 ghostwarriors	2026-04-30 10:20:46 (1 month ago)	Webpage scraping	Brute-Force Bad Web Bot Web App Attack
🇺🇸 TPI-Abuse	2026-04-22 18:32:03 (1 month ago)	(mod_security) mod_security (id:210730) triggered by 51.161.65.49 (proxy-ca011-san49.ahrefs.net): 1 ... show more (mod_security) mod_security (id:210730) triggered by 51.161.65.49 (proxy-ca011-san49.ahrefs.net): 1 in the last 300 secs; Ports: *; Direction: 1; Trigger: LF_MODSEC; Logs: [Wed Apr 22 14:31:58.465940 2026] [security2:error] [pid 3871:tid 3880] [client 51.161.65.49:44596] 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.digital4z.com\|F\|2"] [data ".log"] [severity "CRITICAL"] [tag "CWAF"] [tag "HTTP"] [hostname "www.digital4z.com"] [uri "/Digital4z.com/wp-admin/css/colors/midnight/WS_FTP.LOG"] [unique_id "aekUHp_9ajM2KPgA8jgJagAAAMc"] show less	Brute-Force Bad Web Bot Web App Attack
🇺🇸 TPI-Abuse	2026-04-08 21:40:20 (2 months ago)	(mod_security) mod_security (id:210730) triggered by 51.161.65.49 (proxy-ca011-san49.ahrefs.net): 1 ... show more (mod_security) mod_security (id:210730) triggered by 51.161.65.49 (proxy-ca011-san49.ahrefs.net): 1 in the last 300 secs; Ports: *; Direction: 1; Trigger: LF_MODSEC; Logs: [Wed Apr 08 17:40:13.462402 2026] [security2:error] [pid 2602371:tid 2602371] [client 51.161.65.49:56416] 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\|\|myairbalance.org\|F\|2"] [data ".com"] [severity "CRITICAL"] [tag "CWAF"] [tag "HTTP"] [hostname "myairbalance.org"] [uri "/nampac.com"] [unique_id "adbLPagrhbQ2f8jv1icDSwAAAAg"] show less	Brute-Force Bad Web Bot Web App Attack
🇩🇪 ghostwarriors	2026-04-03 16:50:39 (2 months ago)	Webpage scraping	Brute-Force Bad Web Bot Web App Attack
🇺🇸 TPI-Abuse	2026-04-03 14:19:10 (2 months ago)	(mod_security) mod_security (id:210730) triggered by 51.161.65.49 (proxy-ca011-san49.ahrefs.net): 1 ... show more (mod_security) mod_security (id:210730) triggered by 51.161.65.49 (proxy-ca011-san49.ahrefs.net): 1 in the last 300 secs; Ports: *; Direction: 1; Trigger: LF_MODSEC; Logs: [Fri Apr 03 10:19:03.983155 2026] [security2:error] [pid 22554:tid 22554] [client 51.161.65.49:26888] 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.nationalnova.com\|F\|2"] [data ".db"] [severity "CRITICAL"] [tag "CWAF"] [tag "HTTP"] [hostname "www.nationalnova.com"] [uri "/images/cars/cindy/Thumbs.db"] [unique_id "ac_MV-l8Joilnt4Ci_vPgQAAAAE"] show less	Brute-Force Bad Web Bot Web App Attack
🇪🇸 librebit	2026-04-03 10:52:49 (2 months ago)	Brute force	Brute-Force
🇹🇷 rtbh.com.tr	2026-03-19 20:12:09 (2 months ago)	list.rtbh.com.tr report: tcp/0	Brute-Force
🇹🇷 rtbh.com.tr	2026-03-18 20:12:08 (2 months ago)	list.rtbh.com.tr report: tcp/0	Brute-Force
🇩🇪 ghostwarriors	2026-03-17 20:50:34 (2 months ago)	Webpage scraping	Brute-Force Bad Web Bot Web App Attack

Showing 1 to 15 of 40 reports

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