Must be a valid IPv4 or IPv6 ip address, e.g. 127.0.0.1 or 2001:DB8:0:0:8:800:200C:417A
Basic Info

City: Glostrup Municipality

Region: Capital Region

Country: Denmark

Internet Service Provider: Sentia Denmark A/S

Hostname: unknown

Organization: unknown

Usage Type: Data Center/Web Hosting/Transit

Comments:
Type Details Datetime
attackbotsspam
Dec 14 10:47:41 MK-Soft-VM5 sshd[12781]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.19.251.66 
Dec 14 10:47:42 MK-Soft-VM5 sshd[12781]: Failed password for invalid user php5 from 81.19.251.66 port 9137 ssh2
...
2019-12-14 18:27:38
attackbots
Dec  8 10:06:46 linuxvps sshd\[18516\]: Invalid user steduka from 81.19.251.66
Dec  8 10:06:46 linuxvps sshd\[18516\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.19.251.66
Dec  8 10:06:49 linuxvps sshd\[18516\]: Failed password for invalid user steduka from 81.19.251.66 port 59486 ssh2
Dec  8 10:12:39 linuxvps sshd\[22534\]: Invalid user mapred from 81.19.251.66
Dec  8 10:12:39 linuxvps sshd\[22534\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.19.251.66
2019-12-09 01:00:56
attack
Dec  6 04:45:44 sachi sshd\[15364\]: Invalid user guest from 81.19.251.66
Dec  6 04:45:44 sachi sshd\[15364\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.19.251.66
Dec  6 04:45:47 sachi sshd\[15364\]: Failed password for invalid user guest from 81.19.251.66 port 58355 ssh2
Dec  6 04:51:26 sachi sshd\[16052\]: Invalid user test from 81.19.251.66
Dec  6 04:51:26 sachi sshd\[16052\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.19.251.66
2019-12-06 23:05:38
attackbots
Dec  2 15:14:18 mail sshd[5954]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.19.251.66 
Dec  2 15:14:20 mail sshd[5954]: Failed password for invalid user wienert from 81.19.251.66 port 38615 ssh2
Dec  2 15:20:23 mail sshd[7584]: Failed password for root from 81.19.251.66 port 15502 ssh2
2019-12-02 22:25:04
attackspam
SSH bruteforce (Triggered fail2ban)
2019-12-02 15:17:19
attackspambots
Oct 29 12:02:27 olgosrv01 sshd[24172]: Address 81.19.251.66 maps to techmedia.dk, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!
Oct 29 12:02:27 olgosrv01 sshd[24172]: Invalid user ix from 81.19.251.66
Oct 29 12:02:27 olgosrv01 sshd[24172]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.19.251.66 
Oct 29 12:02:30 olgosrv01 sshd[24172]: Failed password for invalid user ix from 81.19.251.66 port 53090 ssh2
Oct 29 12:02:30 olgosrv01 sshd[24172]: Received disconnect from 81.19.251.66: 11: Bye Bye [preauth]
Oct 29 12:22:03 olgosrv01 sshd[25806]: Address 81.19.251.66 maps to techmedia.dk, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!
Oct 29 12:22:03 olgosrv01 sshd[25806]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=81.19.251.66  user=r.r
Oct 29 12:22:05 olgosrv01 sshd[25806]: Failed password for r.r from 81.19.251.66 port 59683 ssh2
Oct 29 1........
-------------------------------
2019-10-30 03:06:57
Comments on same subnet:
No discussion about this subnet yet..
Whois info:
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Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 81.19.251.66
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 48560
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;81.19.251.66.			IN	A

;; AUTHORITY SECTION:
.			317	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2019102901 1800 900 604800 86400

;; Query time: 52 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Wed Oct 30 03:06:53 CST 2019
;; MSG SIZE  rcvd: 116
Host info
66.251.19.81.in-addr.arpa domain name pointer techmedia.dk.
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

Non-authoritative answer:
66.251.19.81.in-addr.arpa	name = techmedia.dk.

Authoritative answers can be found from:
Related IP info:
Related comments:
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81.22.47.158 attackspambots
(mod_security) mod_security (id:210730) triggered by 81.22.47.158 (RU/Russia/-): 5 in the last 300 secs
2020-10-04 00:26:23
13.58.69.223 attack
Fail2Ban Ban Triggered
2020-10-04 00:44:13
46.101.220.225 attackspambots
Oct  3 17:24:26 mellenthin sshd[1699]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=46.101.220.225
Oct  3 17:24:28 mellenthin sshd[1699]: Failed password for invalid user xerox from 46.101.220.225 port 49423 ssh2
2020-10-04 00:43:41
139.155.38.57 attackspam
Invalid user prakash from 139.155.38.57 port 55730
2020-10-04 00:23:06
62.220.55.57 attackspam
445/tcp 445/tcp
[2020-10-02]2pkt
2020-10-04 00:26:41
212.47.241.15 attack
Oct  3 14:40:48 localhost sshd[36310]: Invalid user user01 from 212.47.241.15 port 36904
Oct  3 14:40:48 localhost sshd[36310]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=212.47.241.15
Oct  3 14:40:48 localhost sshd[36310]: Invalid user user01 from 212.47.241.15 port 36904
Oct  3 14:40:50 localhost sshd[36310]: Failed password for invalid user user01 from 212.47.241.15 port 36904 ssh2
Oct  3 14:44:17 localhost sshd[36664]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=212.47.241.15  user=root
Oct  3 14:44:19 localhost sshd[36664]: Failed password for root from 212.47.241.15 port 42182 ssh2
...
2020-10-04 00:08:16
194.170.156.9 attackspam
$f2bV_matches
2020-10-04 00:16:53
61.155.233.227 attack
Oct  3 12:22:01 gitlab sshd[2806866]: Invalid user user from 61.155.233.227 port 10923
Oct  3 12:22:01 gitlab sshd[2806866]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=61.155.233.227 
Oct  3 12:22:01 gitlab sshd[2806866]: Invalid user user from 61.155.233.227 port 10923
Oct  3 12:22:03 gitlab sshd[2806866]: Failed password for invalid user user from 61.155.233.227 port 10923 ssh2
Oct  3 12:26:39 gitlab sshd[2807520]: Invalid user test from 61.155.233.227 port 45257
...
2020-10-04 00:02:35
118.70.72.103 attackspam
Invalid user git from 118.70.72.103 port 33376
2020-10-04 00:34:04
147.135.132.179 attack
Invalid user stan from 147.135.132.179 port 41886
2020-10-04 00:37:54
106.75.152.83 attack
Invalid user webmaster from 106.75.152.83 port 35532
2020-10-04 00:41:50
200.108.139.242 attack
2020-10-03T23:04:24.374094hostname sshd[63591]: Invalid user testing from 200.108.139.242 port 55036
...
2020-10-04 00:42:33
88.102.249.203 attack
Invalid user liu from 88.102.249.203 port 52736
2020-10-04 00:21:52
103.145.12.227 attackspambots
[2020-10-03 12:24:04] NOTICE[1182][C-00000b6d] chan_sip.c: Call from '' (103.145.12.227:58599) to extension '90046812111802' rejected because extension not found in context 'public'.
[2020-10-03 12:24:04] SECURITY[1204] res_security_log.c: SecurityEvent="FailedACL",EventTV="2020-10-03T12:24:04.770-0400",Severity="Error",Service="SIP",EventVersion="1",AccountID="90046812111802",SessionID="0x7f22f8572958",LocalAddress="IPV4/UDP/192.168.244.6/5060",RemoteAddress="IPV4/UDP/103.145.12.227/58599",ACLName="no_extension_match"
[2020-10-03 12:27:20] NOTICE[1182][C-00000b71] chan_sip.c: Call from '' (103.145.12.227:52542) to extension '01146812111802' rejected because extension not found in context 'public'.
...
2020-10-04 00:30:31
183.83.52.20 attack
Telnet/23 MH Probe, Scan, BF, Hack -
2020-10-04 00:22:36

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