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187.21.208.100

Recent Activity

Abuse confidence score ?

17% Caution

4 reports

3 reporters · latest 55 minutes ago

ISP	Claro NXT Telecomunicacoes Ltda
Usage Type	Fixed Line ISP
ASN	AS28573
Domain Name	claro.com.br
Country	🇧🇷 Brazil
City	Santos, Sao Paulo

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IP Abuse Reports for 187.21.208.100

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This IP address has been reported a total of 4 times from 3 distinct sources. 187.21.208.100 was first reported on September 8th 2026, and the most recent report was 55 minutes ago. In the last 60 days, the top reporter locations were: Germany with 2 reports; United States of America with 2 reports. The most common categories in these recent reports were: Bad Web Bot 3 times; Web App Attack 3 times; Brute-Force 2 times; Port Scan 1 time.

Reporter	IoA Timestamp (UTC)	Comment	Categories
🇺🇸 TPI-Abuse	2026-10-12 18:31:30 (55 minutes ago)	(mod_security) mod_security (id:210350) triggered by 187.21.208.100 (bb15d064.virtua.com.br): 1 in t ... show more (mod_security) mod_security (id:210350) triggered by 187.21.208.100 (bb15d064.virtua.com.br): 1 in the last 300 secs; Ports: *; Direction: 1; Trigger: LF_MODSEC; Logs: [Mon Oct 12 14:31:26.125564 2026] [security2:error] [pid 7027:tid 7027] [client 187.21.208.100:48850] ModSecurity: Access denied with code 403 (phase 2). Pattern match "\\\\b(close\|keep-alive),[\\\\t\\\\n\\\\r ]{0,1}(close\|keep-alive)\\\\b" at REQUEST_HEADERS:Connection. [file "/etc/apache2/conf.d/modsec_vendor_configs/comodo_apache/12_HTTP_Protocol.conf"] [line "70"] [id "210350"] [rev "1"] [msg "COMODO WAF: Multiple/Conflicting Connection Header Data Found\|\|drlaurengardner.com\|F\|4"] [data "keep-alive, close"] [severity "WARNING"] [tag "CWAF"] [tag "Protocol"] [hostname "drlaurengardner.com"] [uri "/"] [unique_id "as0nfpB13U2vgAPzoUuj5AAAAAI"], referer: https://acquire.co.in/redirect.php?ref_host=spielefrosch.de show less	Brute-Force Bad Web Bot Web App Attack
🇺🇸 TPI-Abuse	2026-09-28 10:36:48 (2 weeks ago)	(mod_security) mod_security (id:210350) triggered by 187.21.208.100 (bb15d064.virtua.com.br): 1 in t ... show more (mod_security) mod_security (id:210350) triggered by 187.21.208.100 (bb15d064.virtua.com.br): 1 in the last 300 secs; Ports: *; Direction: 1; Trigger: LF_MODSEC; Logs: [Mon Sep 28 06:36:40.948802 2026] [security2:error] [pid 21888:tid 21888] [client 187.21.208.100:42050] ModSecurity: Access denied with code 403 (phase 2). Pattern match "\\\\b(close\|keep-alive),[\\\\t\\\\n\\\\r ]{0,1}(close\|keep-alive)\\\\b" at REQUEST_HEADERS:Connection. [file "/etc/apache2/conf.d/modsec_vendor_configs/comodo_apache/12_HTTP_Protocol.conf"] [line "70"] [id "210350"] [rev "1"] [msg "COMODO WAF: Multiple/Conflicting Connection Header Data Found\|\|jmarkcapital.com\|F\|4"] [data "keep-alive, close"] [severity "WARNING"] [tag "CWAF"] [tag "Protocol"] [hostname "jmarkcapital.com"] [uri "/"] [unique_id "arpDOL6ED7lFzoP3v2NIzwAAAAw"], referer: https://bestfreeseochecker.site/dir/google-ranking-backlinks-107423 show less	Brute-Force Bad Web Bot Web App Attack
🇩🇪 nyuuzyou	2026-09-08 13:17:45 (1 month ago)	Client failed challenge verification, marked as suspicious. HTTP request received over TCP on applic ... show more Client failed challenge verification, marked as suspicious. HTTP request received over TCP on application ports 80/443. Observed 2026-09-08T13:17:45Z. show less	Bad Web Bot
🇩🇪 LRob	2026-09-08 04:11:40 (1 month ago)	Enumerating paths that do not exist (scanning) \| method: GET \| path: /wp-admin/install.php \| ua: Moz ... show more Enumerating paths that do not exist (scanning) \| method: GET \| path: /wp-admin/install.php \| ua: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36 \| 2026-09-08 04:11 UTC show less	Port Scan Web App Attack

Showing 1 to 4 of 4 reports

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