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 States

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 <<>> 104.21.31.166
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 36812
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.31.166.			IN	A

;; AUTHORITY SECTION:
.			511	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022021700 1800 900 604800 86400

;; Query time: 24 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Thu Feb 17 20:34:12 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 166.31.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 166.31.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
203.128.246.230 attackspam
Unauthorised access (Nov 11) SRC=203.128.246.230 LEN=52 TTL=120 ID=28312 DF TCP DPT=445 WINDOW=8192 SYN
2019-11-12 03:23:13
172.105.213.140 attackbots
firewall-block, port(s): 445/tcp
2019-11-12 03:15:38
210.212.249.228 attack
ssh failed login
2019-11-12 03:41:55
104.245.39.37 attack
Nov 11 17:40:55 XXX sshd[64287]: Invalid user ftpuser from 104.245.39.37 port 56800
2019-11-12 03:18:27
178.116.159.202 attackspambots
11/11/2019-18:27:10.974224 178.116.159.202 Protocol: 6 ET COMPROMISED Known Compromised or Hostile Host Traffic group 13
2019-11-12 03:24:37
219.142.28.206 attackspambots
2019-11-11T19:57:42.800974scmdmz1 sshd\[20044\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=219.142.28.206  user=root
2019-11-11T19:57:44.653128scmdmz1 sshd\[20044\]: Failed password for root from 219.142.28.206 port 37056 ssh2
2019-11-11T20:01:42.793667scmdmz1 sshd\[20713\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=219.142.28.206  user=admin
...
2019-11-12 03:13:51
219.159.229.115 attack
'IP reached maximum auth failures for a one day block'
2019-11-12 03:34:56
103.206.191.100 attackspambots
Nov 11 18:03:12 XXXXXX sshd[63885]: Invalid user gopher from 103.206.191.100 port 55086
2019-11-12 03:03:45
193.31.24.113 attackbots
11/11/2019-20:25:52.066504 193.31.24.113 Protocol: 6 SURICATA SMTP tls rejected
2019-11-12 03:26:17
200.56.3.29 attack
Telnet Server BruteForce Attack
2019-11-12 03:11:41
37.139.13.105 attack
Nov 11 13:11:18 srv3 sshd\[25912\]: Invalid user postgres from 37.139.13.105
Nov 11 13:11:18 srv3 sshd\[25912\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=37.139.13.105
Nov 11 13:11:20 srv3 sshd\[25912\]: Failed password for invalid user postgres from 37.139.13.105 port 49120 ssh2
...
2019-11-12 03:13:22
222.186.175.220 attackbots
SSH Brute Force, server-1 sshd[12412]: Failed password for root from 222.186.175.220 port 50932 ssh2
2019-11-12 03:33:57
188.162.199.211 attackspambots
2019-11-11 13:41:00 auth_login authenticator failed for (localhost.localdomain) [188.162.199.211]: 535 Incorrect authentication data (set_id=info@oga.mk.ua)
2019-11-11 15:40:31 auth_login authenticator failed for (localhost.localdomain) [188.162.199.211]: 535 Incorrect authentication data (set_id=info@fordlipetsk.ru)
...
2019-11-12 03:09:43
59.49.99.124 attack
SSH invalid-user multiple login try
2019-11-12 03:28:00
89.22.103.210 attack
89.22.103.210 - - \[11/Nov/2019:16:49:10 +0100\] "POST /wp-login.php HTTP/1.0" 200 5707 "-" "Mozilla/5.0 \(X11\; Ubuntu\; Linux x86_64\; rv:62.0\) Gecko/20100101 Firefox/62.0"
89.22.103.210 - - \[11/Nov/2019:16:49:11 +0100\] "POST /wp-login.php HTTP/1.0" 200 5707 "-" "Mozilla/5.0 \(X11\; Ubuntu\; Linux x86_64\; rv:62.0\) Gecko/20100101 Firefox/62.0"
89.22.103.210 - - \[11/Nov/2019:16:49:11 +0100\] "POST /xmlrpc.php HTTP/1.0" 200 802 "-" "Mozilla/5.0 \(X11\; Ubuntu\; Linux x86_64\; rv:62.0\) Gecko/20100101 Firefox/62.0"
2019-11-12 03:11:10

Recently Reported IPs

104.21.31.163 104.21.31.167 104.21.31.17 104.21.31.174
104.21.31.175 104.21.31.181 104.21.31.186 38.248.104.10
104.21.31.187 104.21.31.190 104.21.31.193 104.21.31.195
104.21.31.197 104.21.31.202 104.21.31.204 104.21.31.205
104.21.31.209 104.21.31.210 104.21.31.211 104.21.31.216