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51.12.86.100

Neutral Activity

Abuse confidence score ?

0% Low Risk

64 reports

12 reporters · latest 4 years ago

ISP	Microsoft Limited
Usage Type	Data Center/Web Hosting/Transit
ASN	AS8075
Domain Name	microsoft.com
Country	🇸🇪 Sweden
City	Gavle, Gavleborg

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

Report Whois

No reports in the last 60 days

51.12.86.100 has been reported 64 times. The most recent report is from 4 years ago.

The full history is preserved below and remains searchable. A 0% score reflects the absence of recent activity, but this is not a guarantee that earlier reports were invalid. Abuse confidence score decays, naturally, over time, when the abusive activity stops.

IP Abuse Reports for 51.12.86.100

This IP address has been reported a total of 64 times from 12 distinct sources. 51.12.86.100 was first reported on July 15th 2022, and the most recent report was 4 years ago.

Reporter	IoA Timestamp (UTC)	Comment	Categories
🇷🇺 webserfer	2022-09-10 17:27:29 (4 years ago)	[f2b] asterisk scan [W1:2:1d]	Fraud VoIP Brute-Force
🇷🇺 webserfer	2022-09-05 19:08:19 (4 years ago)	[f2b] asterisk scan [W1:2:1d]	Fraud VoIP Brute-Force
🇺🇸 kuj	2022-09-02 16:03:01 (4 years ago)	VoIP Brute Force Attack	Fraud VoIP Brute-Force
🇩🇪 ipcop.net	2022-09-02 14:06:57 (4 years ago)	[2022-09-02 16:06:56] NOTICE[5990] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:1001 ... show more [2022-09-02 16:06:56] NOTICE[5990] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected]>' failed for '51.12.86.100:54141' (callid: 1672992913-781157455-593519123) - Failed to authenticate [2022-09-02 16:06:56] SECURITY[1528] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2022-09-02T16:06:56.897+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="<unknown>",SessionID="1672992913-781157455-593519123",LocalAddress="IPV4/UDP/188.40.118.248/5060",RemoteAddress="IPV4/UDP/51.12.86.100/54141",Challenge="1662127616/2484915bd7b34712baa9bd5821a79c02",Response="5013377f464279e0153d70c3f1d063ac",ExpectedResponse="" [2022-09-02 16:06:56] NOTICE[16912] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected]>' failed for '51.12.86.100:54141' (callid: 1672992913-781157455-593519123) - Failed to authenticate [2022-09-02 16:06:56] SECURITY[1528] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2022-09-02T16:06:56.981+0 show less	Fraud VoIP Brute-Force
🇩🇪 ipcop.net	2022-09-02 13:06:55 (4 years ago)	[2022-09-02 15:06:54] NOTICE[9922] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:2000 ... show more [2022-09-02 15:06:54] NOTICE[9922] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected]>' failed for '51.12.86.100:60424' (callid: 1014373040-193581382-1258766821) - Failed to authenticate [2022-09-02 15:06:54] SECURITY[1528] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2022-09-02T15:06:54.499+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="<unknown>",SessionID="1014373040-193581382-1258766821",LocalAddress="IPV4/UDP/188.40.118.248/5060",RemoteAddress="IPV4/UDP/51.12.86.100/60424",Challenge="1662124014/0e9a6f12050befe4e82d984b31e74516",Response="d678f7c367917f0089959566ab22729e",ExpectedResponse="" [2022-09-02 15:06:54] NOTICE[16912] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected]>' failed for '51.12.86.100:60424' (callid: 1014373040-193581382-1258766821) - Failed to authenticate [2022-09-02 15:06:54] SECURITY[1528] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2022-09-02T15:06:54.62 show less	Fraud VoIP Brute-Force
🇩🇪 ipcop.net	2022-09-02 12:06:50 (4 years ago)	[2022-09-02 14:06:50] NOTICE[5990] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:1001 ... show more [2022-09-02 14:06:50] NOTICE[5990] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected]>' failed for '51.12.86.100:61869' (callid: 966737524-2110956362-711426169) - Failed to authenticate [2022-09-02 14:06:50] SECURITY[1528] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2022-09-02T14:06:50.191+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="<unknown>",SessionID="966737524-2110956362-711426169",LocalAddress="IPV4/UDP/188.40.118.248/5060",RemoteAddress="IPV4/UDP/51.12.86.100/61869",Challenge="1662120410/e7a36e3136a2a5ede9bf8b2d64afe02d",Response="ea515b22e9dd6be9b3a29ddc8d609a33",ExpectedResponse="" [2022-09-02 14:06:50] NOTICE[5990] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected]>' failed for '51.12.86.100:61869' (callid: 966737524-2110956362-711426169) - Failed to authenticate [2022-09-02 14:06:50] SECURITY[1528] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2022-09-02T14:06:50.331+02 show less	Fraud VoIP Brute-Force
🇩🇪 ipcop.net	2022-09-02 11:06:46 (4 years ago)	[2022-09-02 13:06:45] NOTICE[9922] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:200@ ... show more [2022-09-02 13:06:45] NOTICE[9922] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected]>' failed for '51.12.86.100:53877' (callid: 1638424196-1258708550-1202960650) - Failed to authenticate [2022-09-02 13:06:45] SECURITY[1528] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2022-09-02T13:06:45.735+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="<unknown>",SessionID="1638424196-1258708550-1202960650",LocalAddress="IPV4/UDP/188.40.118.248/5060",RemoteAddress="IPV4/UDP/51.12.86.100/53877",Challenge="1662116805/418441e71c8253a4ecaa474cb8eda4ff",Response="1911d09a1dc383491d3c546fe1701636",ExpectedResponse="" [2022-09-02 13:06:45] NOTICE[9378] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected]>' failed for '51.12.86.100:53877' (callid: 1638424196-1258708550-1202960650) - Failed to authenticate [2022-09-02 13:06:45] SECURITY[1528] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2022-09-02T13:06:45.80 show less	Fraud VoIP Brute-Force
🇩🇪 ipcop.net	2022-09-02 11:06:46 (4 years ago)	[2022-09-02 13:06:45] NOTICE[9922] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:200@ ... show more [2022-09-02 13:06:45] NOTICE[9922] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected]>' failed for '51.12.86.100:53877' (callid: 1638424196-1258708550-1202960650) - Failed to authenticate [2022-09-02 13:06:45] SECURITY[1528] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2022-09-02T13:06:45.735+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="<unknown>",SessionID="1638424196-1258708550-1202960650",LocalAddress="IPV4/UDP/188.40.118.248/5060",RemoteAddress="IPV4/UDP/51.12.86.100/53877",Challenge="1662116805/418441e71c8253a4ecaa474cb8eda4ff",Response="1911d09a1dc383491d3c546fe1701636",ExpectedResponse="" [2022-09-02 13:06:45] NOTICE[9378] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected]>' failed for '51.12.86.100:53877' (callid: 1638424196-1258708550-1202960650) - Failed to authenticate [2022-09-02 13:06:45] SECURITY[1528] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2022-09-02T13:06:45.80 show less	Fraud VoIP Brute-Force
🇩🇪 ipcop.net	2022-09-02 10:06:36 (4 years ago)	[2022-09-02 12:06:35] NOTICE[9378] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:2000 ... show more [2022-09-02 12:06:35] NOTICE[9378] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected]>' failed for '51.12.86.100:54465' (callid: 957262770-1194044388-2070953812) - Failed to authenticate [2022-09-02 12:06:35] SECURITY[1528] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2022-09-02T12:06:35.264+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="<unknown>",SessionID="957262770-1194044388-2070953812",LocalAddress="IPV4/UDP/188.40.118.248/5060",RemoteAddress="IPV4/UDP/51.12.86.100/54465",Challenge="1662113195/aed4c4b4ac6bfa1a8b1e8046c8c6b46a",Response="081f822cd327cc8911addc123d7ccaed",ExpectedResponse="" [2022-09-02 12:06:35] NOTICE[5990] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected]>' failed for '51.12.86.100:54465' (callid: 957262770-1194044388-2070953812) - Failed to authenticate [2022-09-02 12:06:35] SECURITY[1528] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2022-09-02T12:06:35.314 show less	Fraud VoIP Brute-Force
🇩🇪 ipcop.net	2022-09-02 10:06:36 (4 years ago)	[2022-09-02 12:06:35] NOTICE[9378] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:2000 ... show more [2022-09-02 12:06:35] NOTICE[9378] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected]>' failed for '51.12.86.100:54465' (callid: 957262770-1194044388-2070953812) - Failed to authenticate [2022-09-02 12:06:35] SECURITY[1528] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2022-09-02T12:06:35.264+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="<unknown>",SessionID="957262770-1194044388-2070953812",LocalAddress="IPV4/UDP/188.40.118.248/5060",RemoteAddress="IPV4/UDP/51.12.86.100/54465",Challenge="1662113195/aed4c4b4ac6bfa1a8b1e8046c8c6b46a",Response="081f822cd327cc8911addc123d7ccaed",ExpectedResponse="" [2022-09-02 12:06:35] NOTICE[5990] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected]>' failed for '51.12.86.100:54465' (callid: 957262770-1194044388-2070953812) - Failed to authenticate [2022-09-02 12:06:35] SECURITY[1528] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2022-09-02T12:06:35.314 show less	Fraud VoIP Brute-Force
🇩🇪 ipcop.net	2022-09-02 09:06:34 (4 years ago)	[2022-09-02 11:06:33] NOTICE[9378] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:2001 ... show more [2022-09-02 11:06:33] NOTICE[9378] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected]>' failed for '51.12.86.100:52464' (callid: 1531379653-885499743-721989933) - Failed to authenticate [2022-09-02 11:06:33] SECURITY[1528] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2022-09-02T11:06:33.430+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="<unknown>",SessionID="1531379653-885499743-721989933",LocalAddress="IPV4/UDP/188.40.118.248/5060",RemoteAddress="IPV4/UDP/51.12.86.100/52464",Challenge="1662109593/92c16a34f75e156a251c58d4e5be13d6",Response="5fe0f9876c70eb52aa907c9585863938",ExpectedResponse="" [2022-09-02 11:06:33] NOTICE[5990] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected]>' failed for '51.12.86.100:52464' (callid: 1531379653-885499743-721989933) - Failed to authenticate [2022-09-02 11:06:33] SECURITY[1528] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2022-09-02T11:06:33.472+02 show less	Fraud VoIP Brute-Force
🇩🇪 ipcop.net	2022-09-02 09:06:34 (4 years ago)	[2022-09-02 11:06:33] NOTICE[9378] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:2001 ... show more [2022-09-02 11:06:33] NOTICE[9378] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected]>' failed for '51.12.86.100:52464' (callid: 1531379653-885499743-721989933) - Failed to authenticate [2022-09-02 11:06:33] SECURITY[1528] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2022-09-02T11:06:33.430+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="<unknown>",SessionID="1531379653-885499743-721989933",LocalAddress="IPV4/UDP/188.40.118.248/5060",RemoteAddress="IPV4/UDP/51.12.86.100/52464",Challenge="1662109593/92c16a34f75e156a251c58d4e5be13d6",Response="5fe0f9876c70eb52aa907c9585863938",ExpectedResponse="" [2022-09-02 11:06:33] NOTICE[5990] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected]>' failed for '51.12.86.100:52464' (callid: 1531379653-885499743-721989933) - Failed to authenticate [2022-09-02 11:06:33] SECURITY[1528] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2022-09-02T11:06:33.472+02 show less	Fraud VoIP Brute-Force
🇩🇪 ipcop.net	2022-09-02 08:06:33 (4 years ago)	[2022-09-02 10:06:32] NOTICE[16912] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:101 ... show more [2022-09-02 10:06:32] NOTICE[16912] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected]>' failed for '51.12.86.100:52188' (callid: 1223218380-1292483801-132018201) - Failed to authenticate [2022-09-02 10:06:32] SECURITY[1528] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2022-09-02T10:06:32.456+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="<unknown>",SessionID="1223218380-1292483801-132018201",LocalAddress="IPV4/UDP/188.40.118.248/5060",RemoteAddress="IPV4/UDP/51.12.86.100/52188",Challenge="1662105992/a4102badab9789ee28dcb85daf810b96",Response="ecf8a5d82ae3f85a28aa6abf7bbec246",ExpectedResponse="" [2022-09-02 10:06:32] NOTICE[9378] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected]>' failed for '51.12.86.100:52188' (callid: 1223218380-1292483801-132018201) - Failed to authenticate [2022-09-02 10:06:32] SECURITY[1528] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2022-09-02T10:06:32.515+ show less	Fraud VoIP Brute-Force
🇩🇪 ipcop.net	2022-09-02 08:06:33 (4 years ago)	[2022-09-02 10:06:32] NOTICE[16912] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:101 ... show more [2022-09-02 10:06:32] NOTICE[16912] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected]>' failed for '51.12.86.100:52188' (callid: 1223218380-1292483801-132018201) - Failed to authenticate [2022-09-02 10:06:32] SECURITY[1528] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2022-09-02T10:06:32.456+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="<unknown>",SessionID="1223218380-1292483801-132018201",LocalAddress="IPV4/UDP/188.40.118.248/5060",RemoteAddress="IPV4/UDP/51.12.86.100/52188",Challenge="1662105992/a4102badab9789ee28dcb85daf810b96",Response="ecf8a5d82ae3f85a28aa6abf7bbec246",ExpectedResponse="" [2022-09-02 10:06:32] NOTICE[9378] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected]>' failed for '51.12.86.100:52188' (callid: 1223218380-1292483801-132018201) - Failed to authenticate [2022-09-02 10:06:32] SECURITY[1528] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2022-09-02T10:06:32.515+ show less	Fraud VoIP Brute-Force
🇩🇪 ipcop.net	2022-09-02 08:06:33 (4 years ago)	[2022-09-02 10:06:32] NOTICE[16912] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:101 ... show more [2022-09-02 10:06:32] NOTICE[16912] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected]>' failed for '51.12.86.100:52188' (callid: 1223218380-1292483801-132018201) - Failed to authenticate [2022-09-02 10:06:32] SECURITY[1528] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2022-09-02T10:06:32.456+0200",Severity="Error",Service="PJSIP",EventVersion="1",AccountID="<unknown>",SessionID="1223218380-1292483801-132018201",LocalAddress="IPV4/UDP/188.40.118.248/5060",RemoteAddress="IPV4/UDP/51.12.86.100/52188",Challenge="1662105992/a4102badab9789ee28dcb85daf810b96",Response="ecf8a5d82ae3f85a28aa6abf7bbec246",ExpectedResponse="" [2022-09-02 10:06:32] NOTICE[9378] res_pjsip/pjsip_distributor.c: Request 'REGISTER' from '<sip:[email protected]>' failed for '51.12.86.100:52188' (callid: 1223218380-1292483801-132018201) - Failed to authenticate [2022-09-02 10:06:32] SECURITY[1528] res_security_log.c: SecurityEvent="ChallengeResponseFailed",EventTV="2022-09-02T10:06:32.515+ show less	Fraud VoIP Brute-Force

Showing 1 to 15 of 64 reports

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