IP info including ISP, Usage Type, and Location provided
by IPInfo. Updated weekly.
Important Note: 51.81.111.6 is an IP address from within
our whitelist belonging to the subnet
51.81.111.0/28,
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.
This IP address has been reported a total of
68
times from
39 distinct
sources.
51.81.111.6 was first reported on
, and the most recent report was
.
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.
(PERMBLOCK) 51.81.111.6 (US/United States/proxy-us-east006-cip7.ahrefs.net) has had more than 2 temp ...
show more(PERMBLOCK) 51.81.111.6 (US/United States/proxy-us-east006-cip7.ahrefs.net) has had more than 2 temp blocks in the last 604800 secs; Ports: *; Direction: inout; Trigger: LF_PERMBLOCK_COUNT; Logs:
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Unauthorized Scraping Attempt - More then 225 Pages Requested in a 24 hour period - Total Requested ...
show moreUnauthorized Scraping Attempt - More then 225 Pages Requested in a 24 hour period - Total Requested Before Block:226
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(apache-useragents) Failed apache-useragents trigger with match [redacted] from 51.81.111.6 (US/Unit ...
show more(apache-useragents) Failed apache-useragents trigger with match [redacted] from 51.81.111.6 (US/United States/proxy-us-east006-cip7.ahrefs.net)
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[TueAug2510:14:40.7262482026][security2:error][pid2217246:tid2217272][client51.81.111.6:0]ModSecurit ...
show more[TueAug2510:14:40.7262482026][security2:error][pid2217246:tid2217272][client51.81.111.6:0]ModSecurity:Accessdeniedwithcode403\(phase1\).Stringmatch\"/wp-content/plugins/blog-manager-light/\"atREQUEST_URI.[file\"/etc/apache2/conf.d/modsec_custom_rules.conf\"][line\"367\"][id\"1101011\"][hostname\"alessandrolucchini.ch\"][uri\"/wp-content/plugins/blog-manager-light/frontend/js/script.js\"][unique_id\"ao1O8KGmGOl0ZIHbCgdWSAAAAA8\"]
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[probe-184-149] 2025-03-10 16:26:10, Client: 51.81.111.6:50533, Protocol: 6, Unauthorized activity t ...
show more[probe-184-149] 2025-03-10 16:26:10, Client: 51.81.111.6:50533, Protocol: 6, Unauthorized activity to HTTP: GET /
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spam or other hacking activities reported by webbfabriken security servers
Attack reported by Webbf ...
show morespam or other hacking activities reported by webbfabriken security servers
Attack reported by Webbfabriken Security API - WFSecAPI
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Multiple web intrusion attempts or RDP/SSH hacking using wrong credentials. Attack automatically blo ...
show moreMultiple web intrusion attempts or RDP/SSH hacking using wrong credentials. Attack automatically blocked by SkyDancer Ai. EXT-SYS-Ai-D
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Hacking
Brute-Force
SSH
Showing 1 to
15
of 68 reports
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