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104.23.166.51

Neutral Activity Whitelisted Subnet

Abuse confidence score ?

0% Low Risk

167 reports

49 reporters · latest 20 minutes ago

104.23.166.51 is an IP address from within our whitelist belonging to the subnet 104.16.0.0/13, which we identify as "Cloudflare Reverse Proxy".

ISP	Cloudflare, Inc.
Usage Type	Data Center/Web Hosting/Transit
ASN	AS13335
Domain Name	cloudflare.com
Country	🇳🇱 Netherlands
City	Amsterdam, North Holland

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IP Abuse Reports for 104.23.166.51

This IP address has been reported a total of 167 times from 49 distinct sources. 104.23.166.51 was first reported on March 5th 2025, and the most recent report was 20 minutes ago. In the last 60 days, the top reporter locations were: United States of America with 19 reports; Bulgaria with 13 reports; Germany with 6 reports. The most common categories in these recent reports were: Web App Attack 49 times; Bad Web Bot 27 times; Brute-Force 23 times; Hacking 16 times; Exploited Host 3 times; Other 6 times.

Reporter	IoA Timestamp (UTC)	Comment	Categories
🇺🇦 URAN Publishing Service	2026-10-01 18:46:35 (20 minutes ago)	[01/Oct/2026:21:46:35 +0300] -- 104.23.166.51 Ban reason: Scanner [SENSITIVE_FILES] \| Request: GET / ... show more [01/Oct/2026:21:46:35 +0300] -- 104.23.166.51 Ban reason: Scanner [SENSITIVE_FILES] \| Request: GET /.env HTTP/1.1 show less	Bad Web Bot Web App Attack
🇳🇱 BlueWire Hosting	2026-10-01 14:55:58 (4 hours ago)	High-confidence malicious configuration/VCS probe	Web App Attack
🇺🇸 TPI-Abuse	2026-10-01 12:44:47 (6 hours ago)	(mod_security) mod_security (id:210492) triggered by 104.23.166.51 (-): 1 in the last 300 secs; Port ... show more (mod_security) mod_security (id:210492) triggered by 104.23.166.51 (-): 1 in the last 300 secs; Ports: *; Direction: 1; Trigger: LF_MODSEC; Logs: [Thu Oct 01 08:44:37.110622 2026] [security2:error] [pid 21589:tid 21589] [client 104.23.166.51:10607] ModSecurity: Access denied with code 403 (phase 1). Matched phrase "/.env" at REQUEST_URI. [file "/etc/apache2/conf.d/modsec_vendor_configs/comodo_apache/02_Global_Generic.conf"] [line "120"] [id "210492"] [rev "3"] [severity "CRITICAL"] [tag "CWAF"] [tag "Generic"] [hostname "divineadventures.org"] [uri "/.env.local"] [unique_id "ar5VtaDlQBW3EkQ7DWHEVgAAACo"] show less	Brute-Force Bad Web Bot Web App Attack
🇮🇹 Inartis	2026-10-01 06:07:27 (12 hours ago)	104.23.166.51 - - [01/Oct/2026:08:07:27 +0200] "GET /.env.local HTTP/2.0" 403 0 "-" "Mozilla/5.0 (Wi ... show more 104.23.166.51 - - [01/Oct/2026:08:07:27 +0200] "GET /.env.local HTTP/2.0" 403 0 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:123.0) Gecko/20100101 Firefox/123.0" ... show less	Brute-Force Bad Web Bot Web App Attack
🇺🇸 TPI-Abuse	2026-10-01 04:57:48 (14 hours ago)	(mod_security) mod_security (id:210730) triggered by 104.23.166.51 (-): 1 in the last 300 secs; Port ... show more (mod_security) mod_security (id:210730) triggered by 104.23.166.51 (-): 1 in the last 300 secs; Ports: *; Direction: 1; Trigger: LF_MODSEC; Logs: [Thu Oct 01 00:57:43.277966 2026] [security2:error] [pid 4831:tid 4831] [client 104.23.166.51:11564] 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\|\|keystonebrass.com\|F\|2"] [data ".php.bak"] [severity "CRITICAL"] [tag "CWAF"] [tag "HTTP"] [hostname "keystonebrass.com"] [uri "/index.php.bak"] [unique_id "ar3oR9zBxu9TKlxqnAhnBQAAABM"] show less	Brute-Force Bad Web Bot Web App Attack
🇩🇪 altenglaner	2026-09-30 19:10:43 (23 hours ago)	Web scanner probing for sensitive files (.env, .git, backups) or path traversal. Reported by fail2ba ... show more Web scanner probing for sensitive files (.env, .git, backups) or path traversal. Reported by fail2ban. show less	Hacking Web App Attack
🇺🇸 TPI-Abuse	2026-09-30 14:14:50 (1 day ago)	(mod_security) mod_security (id:210492) triggered by 104.23.166.51 (-): 1 in the last 300 secs; Port ... show more (mod_security) mod_security (id:210492) triggered by 104.23.166.51 (-): 1 in the last 300 secs; Ports: *; Direction: 1; Trigger: LF_MODSEC; Logs: [Wed Sep 30 10:14:41.798689 2026] [security2:error] [pid 31073:tid 31073] [client 104.23.166.51:11686] ModSecurity: Access denied with code 403 (phase 1). Matched phrase "/.env" 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 "kristywernerauthor.com"] [uri "/.env.production"] [unique_id "ar0ZUc3E4q2vPTOO1K4t4gAAAAk"] show less	Brute-Force Bad Web Bot Web App Attack
🇩🇪 FeG Deutschland	2026-09-30 12:31:24 (1 day ago)	Looking for CMS/PHP/SQL vulnerablilities/excessive crawling - 12	Exploited Host Web App Attack
🇩🇪 Lino Project	2026-09-30 09:39:25 (1 day ago)	104.23.166.51 - - [30/Sep/2026:11:39:25 +0200] "GET /.git/config HTTP/2.0" 403 0 "-" "Mozilla/5.0 (W ... show more 104.23.166.51 - - [30/Sep/2026:11:39:25 +0200] "GET /.git/config HTTP/2.0" 403 0 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36" ... show less	Brute-Force Bad Web Bot Web App Attack
🇪🇸 robotstxt	2026-09-30 09:10:52 (1 day ago)	104.23.166.51 - - [30/Sep/2026:09:09:42 +0000] "GET /.env.staging HTTP/2.0" 403 17286 "-" "Mozilla/5 ... show more 104.23.166.51 - - [30/Sep/2026:09:09:42 +0000] "GET /.env.staging HTTP/2.0" 403 17286 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36 Edg/122.0.0.0" "2a06:98c0:3600::103" edge="104.23.166.51" 104.23.166.51 - - [30/Sep/2026:09:09:42 +0000] "GET /.env.backup HTTP/2.0" 403 17285 "-" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36" "2a06:98c0:3600::103" edge="104.23.166.51" 104.23.166.51 - - [30/Sep/2026:09:09:48 +0000] "GET /.git/config HTTP/2.0" 403 17285 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.3 Safari/605.1.15" "2a06:98c0:3600::103" edge="104.23.166.51" 104.23.166.51 - - [30/Sep/2026:09:09:48 +0000] "GET /.aws/credentials HTTP/2.0" 403 17342 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36" "2a06:98c0:3600::103" edge="104.23.166.51" ... show less	Web App Attack
🇺🇸 TPI-Abuse	2026-09-30 07:13:26 (1 day ago)	(mod_security) mod_security (id:210492) triggered by 104.23.166.51 (-): 1 in the last 300 secs; Port ... show more (mod_security) mod_security (id:210492) triggered by 104.23.166.51 (-): 1 in the last 300 secs; Ports: *; Direction: 1; Trigger: LF_MODSEC; Logs: [Wed Sep 30 03:13:21.519192 2026] [security2:error] [pid 17168:tid 17168] [client 104.23.166.51:11966] ModSecurity: Access denied with code 403 (phase 1). Matched phrase "/.env" 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.schoolsliaisoncommunity.net"] [uri "/.env.staging"] [unique_id "ary2kWbFkgEoiYXrV5gNMAAAAAU"] show less	Brute-Force Bad Web Bot Web App Attack
🇩🇪 raph	2026-09-30 07:05:36 (1 day ago)	[DOT FILES] crawler .env, .git, .config, etc.	Bad Web Bot Web App Attack
🇺🇦 URAN Publishing Service	2026-09-30 03:53:30 (1 day ago)	[30/Sep/2026:06:53:29 +0300] -- 104.23.166.51 Ban reason: Scanner [CMS_GENERIC] \| Request: GET /.env ... show more [30/Sep/2026:06:53:29 +0300] -- 104.23.166.51 Ban reason: Scanner [CMS_GENERIC] \| Request: GET /.env.production HTTP/1.1 show less	Bad Web Bot Web App Attack
🇺🇸 TPI-Abuse	2026-09-29 22:08:26 (1 day ago)	(mod_security) mod_security (id:210492) triggered by 104.23.166.51 (-): 1 in the last 300 secs; Port ... show more (mod_security) mod_security (id:210492) triggered by 104.23.166.51 (-): 1 in the last 300 secs; Ports: *; Direction: 1; Trigger: LF_MODSEC; Logs: [Tue Sep 29 18:08:20.643910 2026] [security2:error] [pid 19452:tid 19452] [client 104.23.166.51:12016] ModSecurity: Access denied with code 403 (phase 1). Matched phrase "/.env" at REQUEST_URI. [file "/etc/apache2/conf.d/modsec_vendor_configs/comodo_apache/02_Global_Generic.conf"] [line "120"] [id "210492"] [rev "3"] [severity "CRITICAL"] [tag "CWAF"] [tag "Generic"] [hostname "www.hanabritgermanshepherds.com"] [uri "/.env.staging"] [unique_id "arw21BjFeCsz6zOulehQiQAAABw"] show less	Brute-Force Bad Web Bot Web App Attack
🇬🇧 cg-design.co.uk	2026-09-29 21:23:49 (1 day ago)	(mod_security) mod_security triggered on hostname [redacted] 104.23.166.51 (-)	SQL Injection

Showing 1 to 15 of 167 reports

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