AbuseIPDB » 51.81.111.117
51.81.111.117
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-east008-cip6.ahrefs.net
Domain Name
ovhcloud.com
Country
🇺🇸
United States of America
City
Reston, Virginia
IP info including ISP, Usage Type, and Location provided
by IPInfo . Updated weekly.
Important Note: 51.81.111.117 is an IP address from within
our whitelist belonging to the subnet
51.81.111.112/28 ,
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.
IP Abuse Reports for 51.81.111.117 :
This IP address has been reported a total of
8
times from
5 distinct
sources.
51.81.111.117 was first reported on
August 23rd 2026 , and the most recent report was
1 day 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
🇬🇧
Mendip_Defender
2026-08-31 02:40:59
(1 day ago)
51.81.111.117 - - [31/Aug/2026:03:41:10 +0100] "GET /robots.txt HTTP/1.1" 404 6371 "-" "Mozilla/5.0 ...
show more
51.81.111.117 - - [31/Aug/2026:03:41:10 +0100] "GET /robots.txt HTTP/1.1" 404 6371 "-" "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)"
...
show less
Bad Web Bot
🇩🇪
ghostwarriors
2026-08-30 09:50:23
(1 day ago)
Webpage scraping
Brute-Force
Bad Web Bot
Web App Attack
🇩🇪
Hazzard
2026-08-28 07:36:52
(3 days ago)
(apache-useragents) Failed apache-useragents trigger with match [redacted]): (CF_ENABLE)
Bad Web Bot
🇩🇪
netclix.gr
2026-08-26 00:00:31
(6 days ago)
(PERMBLOCK) 51.81.111.117 (US/United States/proxy-us-east008-cip6.ahrefs.net) has had more than 2 te ...
show more
(PERMBLOCK) 51.81.111.117 (US/United States/proxy-us-east008-cip6.ahrefs.net) has had more than 2 temp blocks in the last 604800 secs; Ports: *; Direction: inout; Trigger: LF_PERMBLOCK_COUNT; Logs:
show less
Port Scan
🇩🇪
Hazzard
2026-08-25 07:09:22
(6 days ago)
(apache-useragents) Failed apache-useragents trigger with match [redacted]): (CF_ENABLE)
Bad Web Bot
🇺🇸
TPI-Abuse
2026-08-25 02:59:50
(1 week ago)
(mod_security) mod_security (id:210492) triggered by 51.81.111.117 (proxy-us-east008-cip6.ahrefs.net ...
show more
(mod_security) mod_security (id:210492) triggered by 51.81.111.117 (proxy-us-east008-cip6.ahrefs.net): 1 in the last 300 secs; Ports: *; Direction: 1; Trigger: LF_MODSEC; Logs: [Mon Aug 24 22:59:46.680034 2026] [security2:error] [pid 13605:tid 13605] [client 51.81.111.117:23340] 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 "www.nextngnr.com"] [uri "/Hmklo4.htaccess"] [unique_id "ao0FIuVVh7404h1OxKmpjAAAAAQ"]
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Brute-Force
Bad Web Bot
Web App Attack
🇩🇪
netclix.gr
2026-08-24 17:51:00
(1 week ago)
(bot_qv) Bot Scraping QuickView 51.81.111.117 (US/United States/proxy-us-east008-cip6.ahrefs.net): 1 ...
show more
(bot_qv) Bot Scraping QuickView 51.81.111.117 (US/United States/proxy-us-east008-cip6.ahrefs.net): 1 in the last 4600 secs; Ports: *; Direction: inout; Trigger: LF_CUSTOMTRIGGER; Logs: 51.81.111.117 - - [24/Aug/2026:20:50:58 +0300] "GET /index.php?dispatch=products.quick_view&product_id=11950&prev_url=index.php%3Fdispatch%3Dcategories.view%26category_id%3D12%26page%3D3&n_items=11307%2C11305%2C11289%2C12414%2C12596%2C11881%2C11882%2C11974%2C11944%2C11950%2C11951%2C11960%2C11969%2C11978%2C11971%2C11306%2C11326%2C11312%2C11323%2C11300 HTTP/2.0" 302 0 "-" "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)"
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Port Scan
🇩🇪
netclix.gr
2026-08-23 15:35:15
(1 week ago)
(bot_qv) Bot Scraping QuickView 51.81.111.117 (US/United States/proxy-us-east008-cip6.ahrefs.net): 1 ...
show more
(bot_qv) Bot Scraping QuickView 51.81.111.117 (US/United States/proxy-us-east008-cip6.ahrefs.net): 1 in the last 4600 secs; Ports: *; Direction: inout; Trigger: LF_CUSTOMTRIGGER; Logs: 51.81.111.117 - - [23/Aug/2026:18:35:08 +0300] "GET /index.php?dispatch=products.quick_view&product_id=12478&prev_url=index.php%3Fsl%3Den%26dispatch%3Dcategories.view%26category_id%3D38&n_items=12453%2C12463%2C12467%2C12466%2C12454%2C12451%2C12468%2C12471%2C12448%2C12455%2C12469%2C12478%2C12474%2C12470%2C12464%2C12477%2C12452%2C12472%2C12457%2C12473 HTTP/2.0" 302 0 "-" "Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)"
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Port Scan
Showing 1 to
8
of 8 reports
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