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163.223.21.15

Recent Activity

Abuse Confidence Score

29% Elevated

35 reports

19 reporters · latest 3 days ago

ISP: Fiber@Home Global Limited
Usage Type: Fixed Line ISP
ASN: AS138505
Domain Name: nfcoir.com
Country: 🇧🇩 Bangladesh
City: Dhaka, Dhaka Division

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

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Abuse Reports

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Total reports

35 from 19 distinct reporters

First reported

May 16th 2026

Most recent report

3 days ago

Last 60 days

Top reporter locations 🇺🇸 United States of America 8 🇩🇪 Germany 2 🇦🇺 Australia 1

Most common categories Bad Web Bot 11 DDoS Attack 5 Web App Attack 5 Brute-Force 3 Web Spam 1

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
🇺🇸 justbible	2026-11-11 02:08:40 UTC · (3 days ago)	HTTPS (TCP 443) scraping bot, part of a distributed and coordinated scrape: 3 requests from 2026-11-11T02:08:40+00:00 to 2026-11-11T02:16:56+00:00, e.g. 'GET /en/ylt,darby/2chr/29/33 HTTP/2.0' with User-Agent 'Mozilla/5.0 (Windows NT 10.0; Win64; x64 ... show more HTTPS (TCP 443) scraping bot, part of a distributed and coordinated scrape: 3 requests from 2026-11-11T02:08:40+00:00 to 2026-11-11T02:16:56+00:00, e.g. 'GET /en/ylt,darby/2chr/29/33 HTTP/2.0' with User-Agent 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/154.0.0.0 Safari/537.36'. Forged browser headers; spoofed user agent (did not identify itself as a bot); robots.txt ignored (a disallowed URL requested). show less	Bad Web Bot
🇩🇪 nyuuzyou	2026-11-04 11:10:16 UTC · (1 week ago)	Client failed challenge verification, marked as suspicious. HTTP request received over TCP on application ports 80/443. Observed 2026-11-04T11:10:16Z.	Bad Web Bot
🇺🇸 kosada.com	2026-10-19 19:19:56 UTC · (3 weeks ago)	Repeated requests classified as pathological web bot behavior, for example: /[redacted]?topics%5B1%5D=45&topics%5B2%5D=66&topics%5B3%5D=27&topics%5B4%5D=39 (HTTP/2.0 port 443, user agent: "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 ... show more Repeated requests classified as pathological web bot behavior, for example: /[redacted]?topics%5B1%5D=45&topics%5B2%5D=66&topics%5B3%5D=27&topics%5B4%5D=39 (HTTP/2.0 port 443, user agent: "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36") show less	DDoS Attack Bad Web Bot
🇺🇸 SX Communications	2026-10-11 03:48:01 UTC · (1 month ago)	Web spam bot from 163.223.21.15: automated HTTPS requests for fake pharmacy / prescription / drug SEO URLs (bbs and blog product-style paths). 4 hits; paths: /bbs/202509/Pharmacy-Online-1">&lt/a&gt.	Web Spam Blog Spam Bad Web Bot
🇺🇸 TPI-Abuse	2026-10-07 20:34:12 UTC · (1 month ago)	(mod_security) mod_security (id:210350) triggered by 163.223.21.15 (-): 1 in the last 300 secs; Ports: ; Direction: 1; Trigger: LF_MODSEC; Logs: [Wed Oct 07 16:34:05.484854 2026] [security2:error] [pid 19343:tid 19349] [client 163.223.21.15:39218] M ... show more (mod_security) mod_security (id:210350) triggered by 163.223.21.15 (-): 1 in the last 300 secs; Ports: ; Direction: 1; Trigger: LF_MODSEC; Logs: [Wed Oct 07 16:34:05.484854 2026] [security2:error] [pid 19343:tid 19349] [client 163.223.21.15:39218] 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\|\|lamcohomecare.com\|F\|4"] [data "keep-alive, close"] [severity "WARNING"] [tag "CWAF"] [tag "Protocol"] [hostname "lamcohomecare.com"] [uri "/"] [unique_id "asasvc0kTpAtvw3BCojWVwAAAMM"], referer: https://citationbacklinks.online/dir/organic-seo-links-117913 show less	Brute-Force Bad Web Bot Web App Attack
🇺🇸 kosada.com	2026-10-07 18:44:32 UTC · (1 month ago)	Repeated requests classified as pathological web bot behavior, for example: /[redacted]?topics%5B1%5D=89&topics%5B3%5D=38&topics%5B4%5D=53&topics%5B5%5D=46 (HTTP/2.0 port 443, user agent: "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 ... show more Repeated requests classified as pathological web bot behavior, for example: /[redacted]?topics%5B1%5D=89&topics%5B3%5D=38&topics%5B4%5D=53&topics%5B5%5D=46 (HTTP/2.0 port 443, user agent: "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36") show less	DDoS Attack Bad Web Bot
🇺🇸 TPI-Abuse	2026-10-05 18:12:24 UTC · (1 month ago)	(mod_security) mod_security (id:210350) triggered by 163.223.21.15 (-): 1 in the last 300 secs; Ports: ; Direction: 1; Trigger: LF_MODSEC; Logs: [Mon Oct 05 14:12:18.029995 2026] [security2:error] [pid 5516:tid 5516] [client 163.223.21.15:33682] Mod ... show more (mod_security) mod_security (id:210350) triggered by 163.223.21.15 (-): 1 in the last 300 secs; Ports: ; Direction: 1; Trigger: LF_MODSEC; Logs: [Mon Oct 05 14:12:18.029995 2026] [security2:error] [pid 5516:tid 5516] [client 163.223.21.15:33682] 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\|\|kwcccarshow.com\|F\|4"] [data "keep-alive, close"] [severity "WARNING"] [tag "CWAF"] [tag "Protocol"] [hostname "kwcccarshow.com"] [uri "/"] [unique_id "asPogsyE7AJqqKwfEl7powAAAAA"], referer: https://freebacklinkcreator.shop/dir/backlink-outreach-services-116788 show less	Brute-Force Bad Web Bot Web App Attack
🇩🇪 LRob	2026-09-24 16:05:52 UTC · (1 month ago)	This address is taking part in a large-scale, distributed L7 DDoS against an online shop: automated requests to the shop's search, filter and sort pages — the most expensive pages to serve — sent with no referer and with no page asset loaded, so no b ... show more This address is taking part in a large-scale, distributed L7 DDoS against an online shop: automated requests to the shop's search, filter and sort pages — the most expensive pages to serve — sent with no referer and with no page asset loaded, so no browser is behind them. Each participating address sends only one or two such requests, but we count them by the million: a botnet, compromised devices, or abused proxies. The address is blocked. An investigation into what exactly sends these requests from your network (malware, an open proxy, a rented device) would help stop the attack at its source. \| path: /marque/8-orbea \| query: q=Famille-Oiz-Onna-Diem \| 2026-09-24 16:05 UTC show less	DDoS Attack Web App Attack
🇦🇺 MAGIC	2026-09-23 03:04:13 UTC · (1 month ago)	VM5 Bad user agents ignoring web crawling rules. Draing bandwidth	DDoS Attack Bad Web Bot
🇨🇭 backslash	2026-09-21 06:48:02 UTC · (1 month ago)	block ruleset DA4A07AEE48B136A3922182BE8AA8BFBC1840803	Bad Web Bot
🇺🇸 kosada.com	2026-09-21 03:47:17 UTC · (1 month ago)	Repeated requests classified as pathological web bot behavior, for example: /[redacted]?topics%5B0%5D=30&topics%5B1%5D=81&topics%5B2%5D=69&topics%5B3%5D=36 (HTTP/2.0 port 443, user agent: "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:147.0) Gecko ... show more Repeated requests classified as pathological web bot behavior, for example: /[redacted]?topics%5B0%5D=30&topics%5B1%5D=81&topics%5B2%5D=69&topics%5B3%5D=36 (HTTP/2.0 port 443, user agent: "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:147.0) Gecko/20100101 Firefox/147.0") show less	DDoS Attack Bad Web Bot
🇺🇸 TPI-Abuse	2026-09-17 08:06:37 UTC · (1 month ago)	(mod_security) mod_security (id:210350) triggered by 163.223.21.15 (-): 1 in the last 300 secs; Ports: ; Direction: 1; Trigger: LF_MODSEC; Logs: [Thu Sep 17 04:06:32.373711 2026] [security2:error] [pid 9055:tid 9055] [client 163.223.21.15:45908] Mod ... show more (mod_security) mod_security (id:210350) triggered by 163.223.21.15 (-): 1 in the last 300 secs; Ports: ; Direction: 1; Trigger: LF_MODSEC; Logs: [Thu Sep 17 04:06:32.373711 2026] [security2:error] [pid 9055:tid 9055] [client 163.223.21.15:45908] 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\|\|burdetteconsulting.com\|F\|4"] [data "keep-alive, close"] [severity "WARNING"] [tag "CWAF"] [tag "Protocol"] [hostname "burdetteconsulting.com"] [uri "/"] [unique_id "aqufiKOQj5pexKbzOpyp6QAAABY"], referer: https://batchbacklinkchecker.space/dir/seo-link-building-services-30807 show less	Brute-Force Bad Web Bot Web App Attack
🇫🇷 Sklurk	2026-09-17 02:21:52 UTC · (1 month ago)	Web App Attack	Web App Attack
🇵🇱 MatStef132	2026-09-12 01:09:26 UTC · (2 months ago)	MatShield L7: blocked on test-clean.mathost.eu (ua-quarantined)	Bad Web Bot
🇺🇸 kosada.com	2026-09-06 03:33:50 UTC · (2 months ago)	Repeated requests classified as pathological web bot behavior, for example: /[redacted]?topics%5B0%5D=58&topics%5B1%5D=48&topics%5B2%5D=81&topics%5B3%5D=61 (HTTP/2.0 port 443, user agent: "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/6 ... show more Repeated requests classified as pathological web bot behavior, for example: /[redacted]?topics%5B0%5D=58&topics%5B1%5D=48&topics%5B2%5D=81&topics%5B3%5D=61 (HTTP/2.0 port 443, user agent: "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.0 Safari/605.1.15") show less	DDoS Attack Bad Web Bot

Showing 1 to 15 of 35 reports

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