🇮🇹
Francesco Ippoliti
2026-06-23 07:29:06
(1 week ago)
[Jun 23 09:29:05] NOTICE[1286] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected] ...
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[Jun 23 09:29:05] NOTICE[1286] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected] >' failed for '51.161.137.193:52271' (callid: 1038665970-1479089567-1746418248) - No matching endpoint found
...
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Brute-Force
Port Scan
🇩🇪
Aidar Kamalov
2026-06-23 01:49:06
(1 week ago)
2026-06-23T01:49:05.834592+00:00 frankfurt-sip-ulap-net kamailio-12[1315]: { "level": "NOTICE", "mod ...
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2026-06-23T01:49:05.834592+00:00 frankfurt-sip-ulap-net kamailio-12[1315]: { "level": "NOTICE", "module": "xlog", "file": "xlog.c", "line": 283, "function": "", "callid": "1800299564-1429158354-1832120110", "src": "[email protected] ", "dst": "[email protected] ", "mt": 1, "method": "REGISTER", "cseq": "1 REGISTER", "version_config": "26.0429", "message": "AUTH: REGISTER FAILED from 51.161.137.193 (code: -5) fd=144.24.164.82, adu=<null>, aa=<null>, ar=<null>, au=<null>, ad=<null>, aU=<null>, [email protected] " }
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Fraud VoIP
🇩🇪
Aidar Kamalov
2026-06-22 09:48:54
(1 week ago)
2026-06-22T09:48:53.202015+00:00 frankfurt-sip-ulap-net kamailio-12[1323]: { "level": "NOTICE", "mod ...
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2026-06-22T09:48:53.202015+00:00 frankfurt-sip-ulap-net kamailio-12[1323]: { "level": "NOTICE", "module": "xlog", "file": "xlog.c", "line": 283, "function": "", "callid": "1125537009-1127665297-407079219", "src": "[email protected] ", "dst": "[email protected] ", "mt": 1, "method": "REGISTER", "cseq": "1 REGISTER", "version_config": "26.0429", "message": "AUTH: REGISTER FAILED from 51.161.137.193 (code: -5) fd=144.24.164.82, adu=<null>, aa=<null>, ar=<null>, au=<null>, ad=<null>, aU=<null>, [email protected] " }
2026-06-22T09:48:53.480911+00:00 frankfurt-sip-ulap-net kamailio-12[1315]: { "level": "NOTICE", "module": "xlog", "file": "xlog.c", "line": 283, "function": "", "callid": "1125537009-1127665297-407079219", "src": "[email protected] ", "dst": "[email protected] ", "mt": 1, "method": "REGISTER", "cseq": "2 REGISTER", "version_config": "26.0429", "message": "AUTH: REGISTER FAILED from 51.161.137.193 (code: -3) fd=144.24.164.82, adu=sip:144.24.164.82, aa=MD5, ar=144.24.164.82, au=22, ad=,
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Fraud VoIP
🇩🇪
Aidar Kamalov
2026-06-22 01:48:17
(1 week ago)
2026-06-22T01:48:16.643373+00:00 frankfurt-sip-ulap-net kamailio-12[1315]: { "level": "NOTICE", "mod ...
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2026-06-22T01:48:16.643373+00:00 frankfurt-sip-ulap-net kamailio-12[1315]: { "level": "NOTICE", "module": "xlog", "file": "xlog.c", "line": 283, "function": "", "callid": "2042172674-1582121418-59234106", "src": "[email protected] ", "dst": "[email protected] ", "mt": 1, "method": "REGISTER", "cseq": "1 REGISTER", "version_config": "26.0429", "message": "AUTH: REGISTER FAILED from 51.161.137.193 (code: -5) fd=144.24.164.82, adu=<null>, aa=<null>, ar=<null>, au=<null>, ad=<null>, aU=<null>, [email protected] " }
2026-06-22T01:48:16.919582+00:00 frankfurt-sip-ulap-net kamailio-12[1325]: { "level": "NOTICE", "module": "xlog", "file": "xlog.c", "line": 283, "function": "", "callid": "2042172674-1582121418-59234106", "src": "[email protected] ", "dst": "[email protected] ", "mt": 1, "method": "REGISTER", "cseq": "2 REGISTER", "version_config": "26.0429", "message": "AUTH: REGISTER FAILED from 51.161.137.193 (code: -3) fd=144.24.164.82, adu=sip:144.24.164.82, aa=MD5, ar=144.24.164.82, au=145,
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Fraud VoIP
🇮🇹
Francesco Ippoliti
2026-06-22 00:44:13
(1 week ago)
[Jun 22 02:44:12] NOTICE[94540] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:176@154 ...
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[Jun 22 02:44:12] NOTICE[94540] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected] >' failed for '51.161.137.193:58119' (callid: 53407751-1774395294-425283789) - No matching endpoint found
...
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Brute-Force
Port Scan
🇩🇪
Aidar Kamalov
2026-06-21 21:47:35
(1 week ago)
2026-06-21T21:47:33.936342+00:00 frankfurt-sip-ulap-net kamailio-12[1317]: { "level": "NOTICE", "mod ...
show more
2026-06-21T21:47:33.936342+00:00 frankfurt-sip-ulap-net kamailio-12[1317]: { "level": "NOTICE", "module": "xlog", "file": "xlog.c", "line": 283, "function": "", "callid": "296356827-131456776-1458092891", "src": "[email protected] ", "dst": "[email protected] ", "mt": 1, "method": "REGISTER", "cseq": "1 REGISTER", "version_config": "26.0429", "message": "AUTH: REGISTER FAILED from 51.161.137.193 (code: -5) fd=144.24.164.82, adu=<null>, aa=<null>, ar=<null>, au=<null>, ad=<null>, aU=<null>, [email protected] " }
2026-06-21T21:47:34.205744+00:00 frankfurt-sip-ulap-net kamailio-12[1323]: { "level": "NOTICE", "module": "xlog", "file": "xlog.c", "line": 283, "function": "", "callid": "296356827-131456776-1458092891", "src": "[email protected] ", "dst": "[email protected] ", "mt": 1, "method": "REGISTER", "cseq": "2 REGISTER", "version_config": "26.0429", "message": "AUTH: REGISTER FAILED from 51.161.137.193 (code: -3) fd=144.24.164.82, adu=sip:144.24.164.82, aa=MD5, ar=144.24.164.82, au=108,
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Fraud VoIP
🇩🇪
Aidar Kamalov
2026-06-21 19:47:05
(1 week ago)
2026-06-21T19:47:04.269867+00:00 frankfurt-sip-ulap-net kamailio-12[1323]: { "level": "NOTICE", "mod ...
show more
2026-06-21T19:47:04.269867+00:00 frankfurt-sip-ulap-net kamailio-12[1323]: { "level": "NOTICE", "module": "xlog", "file": "xlog.c", "line": 283, "function": "", "callid": "1702401133-1498005340-269587438", "src": "[email protected] ", "dst": "[email protected] ", "mt": 1, "method": "REGISTER", "cseq": "1 REGISTER", "version_config": "26.0429", "message": "AUTH: REGISTER FAILED from 51.161.137.193 (code: -5) fd=144.24.164.82, adu=<null>, aa=<null>, ar=<null>, au=<null>, ad=<null>, aU=<null>, [email protected] " }
2026-06-21T19:47:04.549873+00:00 frankfurt-sip-ulap-net kamailio-12[1314]: { "level": "NOTICE", "module": "xlog", "file": "xlog.c", "line": 283, "function": "", "callid": "1702401133-1498005340-269587438", "src": "[email protected] ", "dst": "[email protected] ", "mt": 1, "method": "REGISTER", "cseq": "2 REGISTER", "version_config": "26.0429", "message": "AUTH: REGISTER FAILED from 51.161.137.193 (code: -3) fd=144.24.164.82, adu=sip:144.24.164.82, aa=MD5, ar=144.24.164.82, au=119
...
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Fraud VoIP
🇮🇹
Francesco Ippoliti
2026-06-21 19:44:07
(1 week ago)
[Jun 21 21:44:06] NOTICE[94540] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:106@154 ...
show more
[Jun 21 21:44:06] NOTICE[94540] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected] >' failed for '51.161.137.193:59433' (callid: 503839622-593751632-1971885525) - No matching endpoint found
...
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Brute-Force
Port Scan
🇩🇪
Aidar Kamalov
2026-06-21 18:46:50
(1 week ago)
2026-06-21T18:45:05.414374+00:00 frankfurt-sip-ulap-net kamailio-12[1332]: { "level": "NOTICE", "mod ...
show more
2026-06-21T18:45:05.414374+00:00 frankfurt-sip-ulap-net kamailio-12[1332]: { "level": "NOTICE", "module": "xlog", "file": "xlog.c", "line": 283, "function": "", "callid": "616415603-1434178906-1395489026", "src": "[email protected] ", "dst": "[email protected] ", "mt": 1, "method": "REGISTER", "cseq": "1 REGISTER", "version_config": "26.0429", "message": "AUTH: REGISTER FAILED from 51.161.137.193 (code: -5) fd=144.24.164.82, adu=<null>, aa=<null>, ar=<null>, au=<null>, ad=<null>, aU=<null>, [email protected] " }
2026-06-21T18:45:05.690667+00:00 frankfurt-sip-ulap-net kamailio-12[1315]: { "level": "NOTICE", "module": "xlog", "file": "xlog.c", "line": 283, "function": "", "callid": "616415603-1434178906-1395489026", "src": "[email protected] ", "dst": "[email protected] ", "mt": 1, "method": "REGISTER", "cseq": "2 REGISTER", "version_config": "26.0429", "message": "AUTH: REGISTER FAILED from 51.161.137.193 (code: -3) fd=144.24.164.82, adu=sip:144.24.164.82, aa=MD5, ar=144.24.164.82, au=59, ad=,
...
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Fraud VoIP
🇮🇹
Francesco Ippoliti
2026-06-21 18:43:21
(1 week ago)
[Jun 21 20:43:19] NOTICE[81132] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:59@154. ...
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[Jun 21 20:43:19] NOTICE[81132] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected] >' failed for '51.161.137.193:62452' (callid: 1286204139-981038555-1586649072) - No matching endpoint found
[Jun 21 20:43:20] NOTICE[80054] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected] >' failed for '51.161.137.193:62452' (callid: 1286204139-981038555-1586649072) - No matching endpoint found
...
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Brute-Force
Port Scan
🇧🇷
ICS Labs
2026-06-17 15:14:41
(2 weeks ago)
ICS Labs identified 51.161.137.193 as a malicious indicator from threat intelligence.
DDoS Attack
Hacking
Brute-Force
Exploited Host
🇩🇪
ipcop.net
2026-06-16 18:24:54
(2 weeks ago)
[2026-06-16 20:24:52] NOTICE[16695] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:651 ...
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[2026-06-16 20:24:52] NOTICE[16695] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected] >' failed for '51.161.137.193:65073' (callid: 1118255067-1812181539-1577735017) - Failed to authenticate
[2026-06-16 20:24:52] SECURITY[25418] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2026-06-16T20:24:52.535+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="<unknown>",SessionID="1118255067-1812181539-1577735017",LocalAddress="IPV4/UDP/188.40.118.248/5060",RemoteAddress="IPV4/UDP/51.161.137.193/65073",Challenge="1781634292/aad37ea4d934ca312ef9fb17779f8b5d",Response="7a480aebde7e7db3d345ac7e0b128000",ExpectedResponse=""
[2026-06-16 20:24:52] NOTICE[1407] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected] >' failed for '51.161.137.193:65073' (callid: 1118255067-1812181539-1577735017) - Failed to authenticate
[2026-06-16 20:24:52] SECURITY[25418] res_security_log.c: SecurityEvent="ChallengeResponseFailed",Even
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Fraud VoIP
Brute-Force
🇩🇪
ipcop.net
2026-06-16 16:37:01
(2 weeks ago)
[2026-06-16 18:36:58] NOTICE[4867] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:3082 ...
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[2026-06-16 18:36:58] NOTICE[4867] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected] >' failed for '51.161.137.193:65290' (callid: 288330500-236506645-1040917390) - Failed to authenticate
[2026-06-16 18:36:58] SECURITY[25418] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2026-06-16T18:36:58.617+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="<unknown>",SessionID="288330500-236506645-1040917390",LocalAddress="IPV4/UDP/188.40.118.248/5060",RemoteAddress="IPV4/UDP/51.161.137.193/65290",Challenge="1781627818/1e5bd5aeba9fef592a4a22d874305fdb",Response="68807957206372e9afdd6a65dcc0d70a",ExpectedResponse=""
[2026-06-16 18:36:59] NOTICE[1407] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected] >' failed for '51.161.137.193:65290' (callid: 288330500-236506645-1040917390) - Failed to authenticate
[2026-06-16 18:36:59] SECURITY[25418] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2026-0
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Fraud VoIP
Brute-Force
🇨🇳
Aidar Kamalov
2026-06-16 16:18:02
(2 weeks ago)
2026-06-16T15:25:54.594308+00:00 beijing-sip-ulap-net kamailio-23[3239]: { "level": "NOTICE", "modul ...
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2026-06-16T15:25:54.594308+00:00 beijing-sip-ulap-net kamailio-23[3239]: { "level": "NOTICE", "module": "xlog", "file": "xlog.c", "line": 283, "function": "", "callid": "2111594786-2059017740-1338369941", "src": "[email protected] ", "dst": "[email protected] ", "mt": 1, "method": "REGISTER", "cseq": "1 REGISTER", "version_config": "26.0429", "message": "AUTH: REGISTER FAILED from 51.161.137.193 (code: -5) fd=39.106.157.175, adu=<null>, aa=<null>, ar=<null>, au=<null>, ad=<null>, aU=<null>, [email protected] " }
2026-06-16T15:25:55.533228+00:00 beijing-sip-ulap-net kamailio-23[3242]: { "level": "NOTICE", "module": "xlog", "file": "xlog.c", "line": 283, "function": "", "callid": "2111594786-2059017740-1338369941", "src": "[email protected] ", "dst": "[email protected] ", "mt": 1, "method": "REGISTER", "cseq": "2 REGISTER", "version_config": "26.0429", "message": "AUTH: REGISTER FAILED from 51.161.137.193 (code: -3) fd=39.106.157.175, adu=sip:39.106.
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Fraud VoIP
🇮🇳
Aidar Kamalov
2026-06-16 15:51:33
(2 weeks ago)
2026-06-16T15:51:32.669879+00:00 hyderabad-sip-ulap-net kamailio-24[320365]: { "level": "NOTICE", "m ...
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2026-06-16T15:51:32.669879+00:00 hyderabad-sip-ulap-net kamailio-24[320365]: { "level": "NOTICE", "module": "xlog", "file": "xlog.c", "line": 283, "function": "", "callid": "1210063959-994215428-1473571238", "src": "[email protected] ", "dst": "[email protected] ", "mt": 1, "method": "REGISTER", "cseq": "1 REGISTER", "version_config": "26.0429", "message": "AUTH: REGISTER FAILED from 51.161.137.193 (code: -5) fd=129.159.20.40, adu=<null>, aa=<null>, ar=<null>, au=<null>, ad=<null>, aU=<null>, [email protected] " }
2026-06-16T15:51:32.850600+00:00 hyderabad-sip-ulap-net kamailio-24[320362]: { "level": "NOTICE", "module": "xlog", "file": "xlog.c", "line": 283, "function": "", "callid": "1210063959-994215428-1473571238", "src": "[email protected] ", "dst": "[email protected] ", "mt": 1, "method": "REGISTER", "cseq": "2 REGISTER", "version_config": "26.0429", "message": "AUTH: REGISTER FAILED from 51.161.137.193 (code: -3) fd=129.159.20.40, adu=sip:129.159.
...
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Fraud VoIP