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AbuseIPDB » 51.81.105.28

51.81.105.28 was found in our database!

This IP was reported 8 times. Confidence of Abuse is 0%: ?

ISP	OVH US LLC
Usage Type	Data Center/Web Hosting/Transit
ASN	AS16276
Hostname(s)	proxy-us-east002-cip13.ahrefs.net
Domain Name	ovhcloud.com
Country	🇺🇸 United States of America
City	Warrenton, Virginia

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

Important Note: 51.81.105.28 is an IP address from within our whitelist belonging to the subnet 51.81.105.16/28, 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 51.81.105.28

Whois 51.81.105.28

IP Abuse Reports for 51.81.105.28:

This IP address has been reported a total of 8 times from 7 distinct sources. 51.81.105.28 was first reported on August 23rd 2026, and the most recent report was 20 hours ago.

Recent Reports: We have received reports of abusive activity from this IP address within the last week. It is potentially still actively engaged in abusive activities.

Reporter	IoA Timestamp (UTC)	Comment	Categories
🇺🇸 ChamberofCommerce.com	2026-08-26 05:33:35 (20 hours ago)	Unauthorized Scraping Attempt - More then 225 Pages Requested in a 24 hour period - Total Requested ... show more Unauthorized Scraping Attempt - More then 225 Pages Requested in a 24 hour period - Total Requested Before Block:226 show less	Bad Web Bot
🇩🇪 netclix.gr	2026-08-26 04:24:36 (21 hours ago)	(bot_qv) Bot Scraping QuickView 51.81.105.28 (US/United States/proxy-us-east002-cip13.ahrefs.net): 1 ... show more (bot_qv) Bot Scraping QuickView 51.81.105.28 (US/United States/proxy-us-east002-cip13.ahrefs.net): 1 in the last 4600 secs; Ports: *; Direction: inout; Trigger: LF_CUSTOMTRIGGER; Logs: 51.81.105.28 - - [26/Aug/2026:07:24:32 +0300] "GET /index.php?dispatch=products.quick_view&product_id=11750&prev_url=index.php%3Fdispatch%3Dcategories.view%26category_id%3D61%26page%3D2&n_items=11748%2C12550%2C12552%2C11750%2C12553%2C11673%2C12554%2C11674%2C11836%2C11847%2C11845 HTTP/2.0" 302 0 "-" "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)" show less	Port Scan
🇩🇪 ghostwarriors	2026-08-25 22:20:46 (1 day ago)	Webpage scraping	Brute-Force Bad Web Bot Web App Attack
🇩🇪 grassau.com	2026-08-24 15:43:38 (2 days ago)	(apache-useragents) Failed apache-useragents trigger with match [redacted] from 51.81.105.28 (US/Uni ... show more (apache-useragents) Failed apache-useragents trigger with match [redacted] from 51.81.105.28 (US/United States/-/-/proxy-us-east002-cip13.ahrefs.net) show less	Bad Web Bot
Anonymous	2026-08-24 00:07:54 (3 days ago)	Automated web probe/scanner blocked at the edge (WorldTree fleet). Signature: scanner_ua. Example re ... show more Automated web probe/scanner blocked at the edge (WorldTree fleet). Signature: scanner_ua. Example request: /articles/a-crisis-in-the-classroom/ on teacher-tea.com show less	Bad Web Bot Web App Attack
🇬🇧 Mendip_Defender	2026-08-23 22:04:02 (3 days ago)	51.81.105.28 - - [23/Aug/2026:23:04:11 +0100] "GET /sitemap.xml HTTP/1.1" 200 5626 "-" "Mozilla/5.0 ... show more 51.81.105.28 - - [23/Aug/2026:23:04:11 +0100] "GET /sitemap.xml HTTP/1.1" 200 5626 "-" "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)" ... show less	Bad Web Bot
🇩🇪 netclix.gr	2026-08-23 15:44:14 (3 days ago)	(bot_qv) Bot Scraping QuickView 51.81.105.28 (US/United States/proxy-us-east002-cip13.ahrefs.net): 1 ... show more (bot_qv) Bot Scraping QuickView 51.81.105.28 (US/United States/proxy-us-east002-cip13.ahrefs.net): 1 in the last 4600 secs; Ports: *; Direction: inout; Trigger: LF_CUSTOMTRIGGER; Logs: 51.81.105.28 - - [23/Aug/2026:18:44:13 +0300] "GET /index.php?dispatch=products.quick_view&product_id=10956&prev_url=index.php%3Fsl%3Den%26dispatch%3Dcategories.view%26category_id%3D59&n_items=13042%2C10749%2C10868%2C10988%2C12514%2C11272%2C11044%2C10956%2C10880%2C10898%2C10900%2C10965%2C10987 HTTP/2.0" 302 0 "-" "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)" show less	Port Scan
🇨🇦 Mediashaker	2026-08-23 14:06:59 (3 days ago)	(apache-useragents) Failed apache-useragents trigger with match [redacted] from 51.81.105.28 (US/Uni ... show more (apache-useragents) Failed apache-useragents trigger with match [redacted] from 51.81.105.28 (US/United States/proxy-us-east002-cip13.ahrefs.net) show less	Bad Web Bot

Showing 1 to 8 of 8 reports

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