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: Amsterdam

Region: North Holland

Country: Netherlands

Internet Service Provider: unknown

Hostname: unknown

Organization: Microsoft Corporation

Usage Type: unknown

Comments:
No discussion about this IP yet. Click above link to make one.
Comments on same subnet:
No discussion about this subnet yet..
Whois info:
b
Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 51.137.81.54
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 36369
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

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

;; AUTHORITY SECTION:
.			3600	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2019082801 1800 900 604800 86400

;; Query time: 2 msec
;; SERVER: 67.207.67.2#53(67.207.67.2)
;; WHEN: Thu Aug 29 01:58:53 CST 2019
;; MSG SIZE  rcvd: 116
Host info
Host 54.81.137.51.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		67.207.67.2
Address:	67.207.67.2#53

** server can't find 54.81.137.51.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
85.192.74.157 attack
Unauthorized connection attempt detected from IP address 85.192.74.157 to port 2220 [J]
2020-01-08 14:58:31
36.225.66.32 attackbotsspam
Attempt to attack host OS, exploiting network vulnerabilities, on 08-01-2020 04:55:09.
2020-01-08 14:20:22
5.189.151.105 attackspam
$f2bV_matches
2020-01-08 14:53:19
88.247.218.247 attack
Automatic report - Port Scan Attack
2020-01-08 15:02:22
117.80.212.113 attack
Jan  8 06:55:23 ns381471 sshd[3438]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=117.80.212.113
Jan  8 06:55:25 ns381471 sshd[3438]: Failed password for invalid user web2 from 117.80.212.113 port 35439 ssh2
2020-01-08 14:50:05
79.177.2.142 attackbots
Unauthorized connection attempt detected from IP address 79.177.2.142 to port 23 [J]
2020-01-08 14:26:45
14.248.157.77 attackbotsspam
unauthorized connection attempt
2020-01-08 14:13:53
124.123.43.16 attackspambots
Automatic report - Port Scan Attack
2020-01-08 14:29:59
103.221.228.70 attackbots
20/1/8@00:31:33: FAIL: Alarm-Network address from=103.221.228.70
...
2020-01-08 14:47:32
73.242.200.160 attack
Jan  8 07:29:49 [host] sshd[21704]: Invalid user huy from 73.242.200.160
Jan  8 07:29:49 [host] sshd[21704]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=73.242.200.160
Jan  8 07:29:51 [host] sshd[21704]: Failed password for invalid user huy from 73.242.200.160 port 47412 ssh2
2020-01-08 14:45:03
125.214.57.87 attack
20/1/7@23:54:25: FAIL: Alarm-Intrusion address from=125.214.57.87
...
2020-01-08 14:56:05
101.251.228.26 attack
Unauthorized connection attempt detected from IP address 101.251.228.26 to port 2220 [J]
2020-01-08 15:08:15
2.111.90.58 attackbotsspam
Jan  8 05:47:32 srv01 sshd[20664]: Invalid user mwang2 from 2.111.90.58 port 46156
Jan  8 05:47:32 srv01 sshd[20664]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=2.111.90.58
Jan  8 05:47:32 srv01 sshd[20664]: Invalid user mwang2 from 2.111.90.58 port 46156
Jan  8 05:47:34 srv01 sshd[20664]: Failed password for invalid user mwang2 from 2.111.90.58 port 46156 ssh2
Jan  8 05:55:23 srv01 sshd[21346]: Invalid user ack from 2.111.90.58 port 38368
...
2020-01-08 14:14:25
112.206.225.82 attack
Unauthorized connection attempt detected from IP address 112.206.225.82 to port 2220 [J]
2020-01-08 14:48:44
119.205.235.251 attackbotsspam
Jan  8 01:00:43 www sshd\[30829\]: Invalid user john from 119.205.235.251
Jan  8 01:03:33 www sshd\[31024\]: Invalid user scaner from 119.205.235.251
...
2020-01-08 14:44:39

Recently Reported IPs

66.25.99.242 36.22.199.229 155.141.239.12 110.113.188.80
211.238.196.124 111.201.106.222 31.240.172.134 87.181.3.30
99.25.145.178 59.158.115.79 112.210.140.19 213.119.105.67
23.218.127.232 27.254.194.99 49.163.105.7 70.96.121.56
72.18.251.30 32.153.247.99 23.7.123.115 169.130.219.148