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: unknown

Region: unknown

Country: United Kingdom

Internet Service Provider: unknown

Hostname: unknown

Organization: unknown

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 <<>> 81.31.21.57
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 49644
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

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

;; AUTHORITY SECTION:
.			472	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2020100700 1800 900 604800 86400

;; Query time: 16 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Wed Oct 07 15:49:52 CST 2020
;; MSG SIZE  rcvd: 115
Host info
Host 57.21.31.81.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 57.21.31.81.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
103.92.24.240 attack
Automatic report - SSH Brute-Force Attack
2020-01-30 04:49:49
49.88.112.62 attack
$f2bV_matches
2020-01-30 04:53:04
5.196.116.202 attackspam
Jan 27 00:33:10 main sshd[13794]: Failed password for invalid user test from 5.196.116.202 port 43226 ssh2
Jan 27 01:37:07 main sshd[17505]: Failed password for invalid user test from 5.196.116.202 port 37040 ssh2
Jan 27 22:05:39 main sshd[31671]: Failed password for invalid user god from 5.196.116.202 port 37662 ssh2
Jan 28 00:20:54 main sshd[4356]: Failed password for invalid user ark from 5.196.116.202 port 39126 ssh2
Jan 28 23:41:26 main sshd[24466]: Failed password for invalid user ts from 5.196.116.202 port 39192 ssh2
Jan 29 00:05:49 main sshd[25229]: Failed password for invalid user ovh from 5.196.116.202 port 35306 ssh2
Jan 29 01:21:55 main sshd[29606]: Failed password for invalid user db2fenc2 from 5.196.116.202 port 40486 ssh2
Jan 29 11:08:49 main sshd[15113]: Failed password for invalid user ashok from 5.196.116.202 port 59920 ssh2
Jan 29 23:13:17 main sshd[31437]: Failed password for invalid user deploy from 5.196.116.202 port 49096 ssh2
2020-01-30 04:47:18
197.219.155.108 attack
2020-01-24 17:58:03 1iv2HS-00046U-AR SMTP connection from \(\[197.219.155.108\]\) \[197.219.155.108\]:23691 I=\[193.107.88.166\]:25 closed by DROP in ACL
2020-01-24 17:58:18 1iv2Hg-00046w-FT SMTP connection from \(\[197.219.155.108\]\) \[197.219.155.108\]:23785 I=\[193.107.88.166\]:25 closed by DROP in ACL
2020-01-24 17:58:25 1iv2Ho-00047D-RU SMTP connection from \(\[197.219.155.108\]\) \[197.219.155.108\]:23862 I=\[193.107.88.166\]:25 closed by DROP in ACL
...
2020-01-30 04:50:54
117.248.213.2 attack
445/tcp
[2020-01-29]1pkt
2020-01-30 04:09:04
182.53.39.56 attackspambots
Unauthorized connection attempt from IP address 182.53.39.56 on Port 445(SMB)
2020-01-30 04:24:28
197.210.84.156 attackbotsspam
Unauthorized connection attempt from IP address 197.210.84.156 on Port 445(SMB)
2020-01-30 04:20:48
200.178.62.242 attackbotsspam
20/1/29@08:31:28: FAIL: Alarm-Network address from=200.178.62.242
...
2020-01-30 04:19:00
41.210.143.154 attackspambots
Fail2Ban Ban Triggered
2020-01-30 04:53:37
129.28.148.242 attackspambots
Jan 29 15:51:26 lnxmail61 sshd[7930]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=129.28.148.242
2020-01-30 04:46:35
197.156.80.221 attackbots
Unauthorized connection attempt from IP address 197.156.80.221 on Port 445(SMB)
2020-01-30 04:11:40
197.230.19.2 attackbotsspam
2019-02-01 16:30:52 H=\(\[197.230.19.2\]\) \[197.230.19.2\]:45659 I=\[193.107.88.166\]:25 F=\ rejected RCPT \: Sender verify failed
2019-02-01 16:31:04 H=\(\[197.230.19.2\]\) \[197.230.19.2\]:45797 I=\[193.107.88.166\]:25 F=\ rejected RCPT \: Sender verify failed
2019-02-01 16:31:12 H=\(\[197.230.19.2\]\) \[197.230.19.2\]:45888 I=\[193.107.88.166\]:25 F=\ rejected RCPT \: Sender verify failed
...
2020-01-30 04:32:57
103.133.204.147 attackspambots
Unauthorized connection attempt detected from IP address 103.133.204.147 to port 23 [J]
2020-01-30 04:48:23
13.48.49.229 attackbots
bad
2020-01-30 04:23:10
197.228.95.186 attack
2019-05-14 13:39:01 H=8ta-228-95-186.telkomadsl.co.za \[197.228.95.186\]:10503 I=\[193.107.88.166\]:25 F=\ rejected RCPT \: Sender verify failed
2019-05-14 13:39:47 H=8ta-228-95-186.telkomadsl.co.za \[197.228.95.186\]:10764 I=\[193.107.88.166\]:25 F=\ rejected RCPT \: Sender verify failed
2019-05-14 13:40:08 H=8ta-228-95-186.telkomadsl.co.za \[197.228.95.186\]:10875 I=\[193.107.88.166\]:25 F=\ rejected RCPT \: Sender verify failed
...
2020-01-30 04:34:46

Recently Reported IPs

29.49.94.187 186.10.94.93 52.77.116.19 35.223.239.83
33.110.240.160 115.96.151.205 243.43.217.211 173.83.68.50
117.29.7.244 147.135.160.174 210.108.70.114 3.202.153.23
115.139.102.110 213.191.237.193 198.164.225.67 252.162.168.22
166.41.255.224 181.11.153.96 143.218.101.49 12.250.128.90