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AbuseIPDB » 165.21.103.91

165.21.103.91 was found in our database!

This IP was reported 34 times. Confidence of Abuse is 12%: ?

12%

ISP	SingNET PTE LTD
Usage Type	Fixed Line ISP
ASN	AS3758
Domain Name	singtel.com
Country	🇸🇬 Singapore
City	Singapore

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

Report 165.21.103.91

Whois 165.21.103.91

IP Abuse Reports for 165.21.103.91:

This IP address has been reported a total of 34 times from 13 distinct sources. 165.21.103.91 was first reported on July 18th 2021, 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
🇩🇪 moretrix	2026-08-31 01:40:59 (1 day ago)	2026-08-31T03:40:59.596530+02:00 ieyasu.moretrix.com named[1580]: client @0x7f2643f85c00 165.21.103. ... show more 2026-08-31T03:40:59.596530+02:00 ieyasu.moretrix.com named[1580]: client @0x7f2643f85c00 165.21.103.91#63673 (worldshake.org): view external: query (cache) 'worldshake.org/CNAME/IN' denied (allow-query-cache did not match) ... show less	Brute-Force
🇺🇸 Axel	2026-08-11 22:07:36 (2 weeks ago)	Blocked by UFW on LAXHH [53/icmp] \| SPT: 59562 \| TTL: 241 \| LEN: 56 \| TOS: 0x00 • Reported by: githu ... show more Blocked by UFW on LAXHH [53/icmp] \| SPT: 59562 \| TTL: 241 \| LEN: 56 \| TOS: 0x00 • Reported by: github.com/sefinek/UFW-AbuseIPDB-Reporter show less	Port Scan
🇩🇪 moretrix	2026-07-26 03:16:09 (1 month ago)	2026-07-26T05:16:08.690729+02:00 ieyasu.moretrix.com named[657093]: client @0x7f6d94988000 165.21.10 ... show more 2026-07-26T05:16:08.690729+02:00 ieyasu.moretrix.com named[657093]: client @0x7f6d94988000 165.21.103.91#38156 (hasseltisverkocht.worldshake.org): view external: query (cache) 'hasseltisverkocht.worldshake.org/A/IN' denied (allow-query-cache did not match) ... show less	Brute-Force
Anonymous	2026-06-27 10:32:40 (2 months ago)	Port scan on port 53/UDP to unused IP	Port Scan
🇨🇭 Mario Bretscher	2026-06-21 15:24:29 (2 months ago)	21-Jun-2026 17:24:18.037 security: info: client @0x7fb959cfde28 165.21.103.91#53117 (hades.net.letsb ... show more 21-Jun-2026 17:24:18.037 security: info: client @0x7fb959cfde28 165.21.103.91#53117 (hades.net.letsbuild.ch): view Extern: query 'hades.net.letsbuild.ch/AAAA/IN' denied 21-Jun-2026 17:24:21.494 security: info: client @0x7fb959cfde28 165.21.103.91#56081 (ns1.letsbuild.ch): view Extern: query 'ns1.letsbuild.ch/AAAA/IN' denied 21-Jun-2026 17:24:22.240 security: info: client @0x7fb95016b2f8 165.21.103.91#46869 (hades.net.letsbuild.ch): view Extern: query 'hades.net.letsbuild.ch/AAAA/IN' denied 21-Jun-2026 17:24:23.758 security: info: client @0x7fb954100278 165.21.103.91#57969 (hades.net.letsbuild.ch): view Extern: query 'hades.net.letsbuild.ch/AAAA/IN' denied 21-Jun-2026 17:24:28.178 security: info: client @0x7fb95016b2f8 165.21.103.91#29330 (ns1.letsbuild.ch): view Extern: query 'ns1.letsbuild.ch/A/IN' denied ... show less	Web App Attack
🇩🇪 moretrix	2026-06-20 00:39:17 (2 months ago)	2026-06-20T02:39:16.541459+02:00 ieyasu.moretrix.com named[1509]: client @0x7fc838859000 165.21.103. ... show more 2026-06-20T02:39:16.541459+02:00 ieyasu.moretrix.com named[1509]: client @0x7fc838859000 165.21.103.91#57974 (koffiepadindekorf.worldshake.org): view external: query (cache) 'koffiepadindekorf.worldshake.org/MX/IN' denied (allow-query-cache did not match) ... show less	Brute-Force
🇿🇦 rb-sys	2026-05-19 07:23:03 (3 months ago)	2026-05-19T07:23:02.596814+00:00 rbdns kernel: [UFW BLOCK] IN=eth0 OUT= MAC=bc:24:11:65:b4:ae:e8:eb: ... show more 2026-05-19T07:23:02.596814+00:00 rbdns kernel: [UFW BLOCK] IN=eth0 OUT= MAC=bc:24:11:65:b4:ae:e8:eb:d3:b1:0a:77:08:00 SRC=165.21.103.91 DST=102.214.10.82 LEN=60 TOS=0x00 PREC=0x00 TTL=45 ID=44670 DF PROTO=TCP SPT=44324 DPT=53 WINDOW=64240 RES=0x00 SYN URGP=0 ... show less	Port Scan
🇩🇰 SaltySoftworks	2026-05-17 04:52:55 (3 months ago)	2026-05-17T04:52:33.038420+00:00 kernel: TCP Attack: SRC=165.21.103.91 DST=[Masked] LEN=40 TOS=0x00 ... show more 2026-05-17T04:52:33.038420+00:00 kernel: TCP Attack: SRC=165.21.103.91 DST=[Masked] LEN=40 TOS=0x00 PREC=0x00 TTL=242 DF PROTO=TCP SPT=41682 DPT=53 WINDOW=0 RES=0x00 ACK RST URGP=0 show less	Hacking Bad Web Bot Web App Attack
🇩🇪 moretrix	2026-05-15 22:33:21 (3 months ago)	2026-05-15T22:26:46.936535+02:00 ieyasu.moretrix.com named[226824]: client @0x7f6344522000 165.21.10 ... show more 2026-05-15T22:26:46.936535+02:00 ieyasu.moretrix.com named[226824]: client @0x7f6344522000 165.21.103.91#6256 (worldshake.org): view external: query (cache) 'worldshake.org/A/IN' denied (allow-query-cache did not match) 2026-05-16T00:33:19.965023+02:00 ieyasu.moretrix.com named[226824]: client @0x7f6350763000 165.21.103.91#52266 (wakkerhasselt.worldshake.org): view external: query (cache) 'wakkerhasselt.worldshake.org/A/IN' denied (allow-query-cache did not match) ... show less	Brute-Force
🇩🇪 moretrix	2026-05-15 20:26:43 (3 months ago)	2026-05-15T20:26:34.385220+02:00 ieyasu.moretrix.com named[226824]: client @0x7f635184f000 165.21.10 ... show more 2026-05-15T20:26:34.385220+02:00 ieyasu.moretrix.com named[226824]: client @0x7f635184f000 165.21.103.91#46437 (worldshake.org): view external: query (cache) 'worldshake.org/A/IN' denied (allow-query-cache did not match) 2026-05-15T20:26:35.507332+02:00 ieyasu.moretrix.com named[226824]: client @0x7f6359969c00 165.21.103.91#10818 (worldshake.org): view external: query (cache) 'worldshake.org/A/IN' denied (allow-query-cache did not match) 2026-05-15T22:26:42.799465+02:00 ieyasu.moretrix.com named[226824]: client @0x7f635184f000 165.21.103.91#48690 (worldshake.org): view external: query (cache) 'worldshake.org/A/IN' denied (allow-query-cache did not match) ... show less	Brute-Force
🇩🇪 moretrix	2026-05-08 14:10:37 (3 months ago)	2026-05-08T16:10:30.806814+02:00 ieyasu.moretrix.com named[1361]: client @0x7fc1f11ed000 165.21.103. ... show more 2026-05-08T16:10:30.806814+02:00 ieyasu.moretrix.com named[1361]: client @0x7fc1f11ed000 165.21.103.91#44016 (worldshake.org): view external: query (cache) 'worldshake.org/A/IN' denied (allow-query-cache did not match) 2026-05-08T16:10:31.051068+02:00 ieyasu.moretrix.com named[1361]: client @0x7fc1f6c1b800 165.21.103.91#29399 (worldshake.org): view external: query (cache) 'worldshake.org/A/IN' denied (allow-query-cache did not match) 2026-05-08T16:10:36.804951+02:00 ieyasu.moretrix.com named[1361]: client @0x7fc1fa655000 165.21.103.91#51246 (worldshake.org): view external: query (cache) 'worldshake.org/A/IN' denied (allow-query-cache did not match) ... show less	Brute-Force
🇩🇪 moretrix	2026-05-04 21:58:38 (3 months ago)	2026-05-04T23:58:34.969704+02:00 ieyasu.moretrix.com named[1389]: client @0x7fcfe42ea400 165.21.103. ... show more 2026-05-04T23:58:34.969704+02:00 ieyasu.moretrix.com named[1389]: client @0x7fcfe42ea400 165.21.103.91#58773 (worldshake.org): view external: query (cache) 'worldshake.org/A/IN' denied (allow-query-cache did not match) 2026-05-04T23:58:35.228136+02:00 ieyasu.moretrix.com named[1389]: client @0x7fcfdc612800 165.21.103.91#41428 (worldshake.org): view external: query (cache) 'worldshake.org/A/IN' denied (allow-query-cache did not match) 2026-05-04T23:58:36.932991+02:00 ieyasu.moretrix.com named[1389]: client @0x7fcfe3f5a400 165.21.103.91#25875 (worldshake.org): view external: query (cache) 'worldshake.org/A/IN' denied (allow-query-cache did not match) ... show less	Brute-Force
🇩🇪 moretrix	2026-05-02 01:20:03 (3 months ago)	2026-05-02T03:20:02.123013+02:00 ieyasu.moretrix.com named[1389]: client @0x7fcfdedd5c00 165.21.103. ... show more 2026-05-02T03:20:02.123013+02:00 ieyasu.moretrix.com named[1389]: client @0x7fcfdedd5c00 165.21.103.91#61124 (hasseltisverkocht.worldshake.org): view external: query (cache) 'hasseltisverkocht.worldshake.org/AAAA/IN' denied (allow-query-cache did not match) 2026-05-02T03:20:02.629567+02:00 ieyasu.moretrix.com named[1389]: client @0x7fcfdede0400 165.21.103.91#21208 (hasseltisverkocht.worldshake.org): view external: query (cache) 'hasseltisverkocht.worldshake.org/AAAA/IN' denied (allow-query-cache did not match) 2026-05-02T03:20:02.877612+02:00 ieyasu.moretrix.com named[1389]: client @0x7fcfe3f5a400 165.21.103.91#54347 (hasseltisverkocht.worldshake.org): view external: query (cache) 'hasseltisverkocht.worldshake.org/AAAA/IN' denied (allow-query-cache did not match) ... show less	Brute-Force
🇩🇪 moretrix	2026-04-12 06:24:50 (4 months ago)	2026-04-12T08:24:48.011679+02:00 ieyasu.moretrix.com named[2024]: client @0x7f94dca9b400 165.21.103. ... show more 2026-04-12T08:24:48.011679+02:00 ieyasu.moretrix.com named[2024]: client @0x7f94dca9b400 165.21.103.91#56416 (204.194.247.80.in-addr.arpa): view external: query (cache) '204.194.247.80.in-addr.arpa/PTR/IN' denied (allow-query-cache did not match) 2026-04-12T08:24:49.575749+02:00 ieyasu.moretrix.com named[2024]: client @0x7f94d6cfcc00 165.21.103.91#16420 (204.194.247.80.in-addr.arpa): view external: query (cache) '204.194.247.80.in-addr.arpa/PTR/IN' denied (allow-query-cache did not match) ... show less	Brute-Force
🇩🇪 moretrix	2026-04-11 11:01:05 (4 months ago)	2026-04-11T13:01:01.084187+02:00 ieyasu.moretrix.com named[2024]: client @0x7f94ddb56000 165.21.103. ... show more 2026-04-11T13:01:01.084187+02:00 ieyasu.moretrix.com named[2024]: client @0x7f94ddb56000 165.21.103.91#18060 (worldshake.org): view external: query (cache) 'worldshake.org/A/IN' denied (allow-query-cache did not match) 2026-04-11T13:01:03.082064+02:00 ieyasu.moretrix.com named[2024]: client @0x7f94d7239c00 165.21.103.91#57961 (worldshake.org): view external: query (cache) 'worldshake.org/A/IN' denied (allow-query-cache did not match) 2026-04-11T13:01:05.046725+02:00 ieyasu.moretrix.com named[2024]: client @0x7f94dca97c00 165.21.103.91#35719 (worldshake.org): view external: query (cache) 'worldshake.org/A/IN' denied (allow-query-cache did not match) ... show less	Brute-Force

Showing 1 to 15 of 34 reports

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