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 <<>> 104.21.66.156
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 36073
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.66.156.			IN	A

;; AUTHORITY SECTION:
.			25	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022021701 1800 900 604800 86400

;; Query time: 69 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:44:50 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 156.66.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 156.66.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
106.75.67.48 attackbotsspam
"fail2ban match"
2020-05-05 18:30:12
103.82.81.110 attackbots
firewall-block, port(s): 445/tcp
2020-05-05 18:42:30
45.142.195.7 attack
May  5 11:31:23 statusweb1.srvfarm.net postfix/smtpd[1257524]: warning: unknown[45.142.195.7]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May  5 11:32:13 statusweb1.srvfarm.net postfix/smtpd[1257524]: warning: unknown[45.142.195.7]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May  5 11:33:05 statusweb1.srvfarm.net postfix/smtpd[1258146]: warning: unknown[45.142.195.7]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May  5 11:33:55 statusweb1.srvfarm.net postfix/smtpd[1257898]: warning: unknown[45.142.195.7]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
May  5 11:34:46 statusweb1.srvfarm.net postfix/smtpd[1257898]: warning: unknown[45.142.195.7]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
2020-05-05 18:02:18
185.211.245.149 attackspam
firewall-block, port(s): 22/tcp
2020-05-05 18:31:44
192.119.106.136 attackspambots
Honeypot Spam Send
2020-05-05 18:06:27
23.236.217.19 attackbotsspam
(mod_security) mod_security (id:210492) triggered by 23.236.217.19 (CA/Canada/countershafts.betahousehelp.com): 5 in the last 3600 secs
2020-05-05 18:43:30
185.202.1.254 attackbotsspam
2020-05-05T09:40:03Z - RDP login failed multiple times. (185.202.1.254)
2020-05-05 18:11:55
51.77.212.235 attackbots
May  5 11:46:12 plex sshd[6699]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.77.212.235  user=root
May  5 11:46:14 plex sshd[6699]: Failed password for root from 51.77.212.235 port 39364 ssh2
May  5 11:46:12 plex sshd[6699]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=51.77.212.235  user=root
May  5 11:46:14 plex sshd[6699]: Failed password for root from 51.77.212.235 port 39364 ssh2
May  5 11:50:05 plex sshd[6723]: Invalid user kin from 51.77.212.235 port 47776
2020-05-05 18:06:57
212.86.97.209 attackbotsspam
firewall-block, port(s): 23/tcp
2020-05-05 18:21:54
200.98.68.239 attackbotsspam
firewall-block, port(s): 445/tcp
2020-05-05 18:24:46
106.52.196.69 attack
May  5 05:49:33 master sshd[29872]: Failed password for invalid user miner from 106.52.196.69 port 49042 ssh2
May  5 06:02:58 master sshd[29932]: Failed password for root from 106.52.196.69 port 53946 ssh2
May  5 06:05:01 master sshd[29942]: Failed password for root from 106.52.196.69 port 46866 ssh2
May  5 06:06:51 master sshd[29948]: Failed password for invalid user inspur from 106.52.196.69 port 39776 ssh2
May  5 06:08:50 master sshd[29956]: Failed password for root from 106.52.196.69 port 60926 ssh2
May  5 06:10:42 master sshd[29962]: Failed password for invalid user yk from 106.52.196.69 port 53836 ssh2
May  5 06:12:39 master sshd[29968]: Failed password for invalid user student from 106.52.196.69 port 46756 ssh2
May  5 06:14:41 master sshd[29975]: Failed password for root from 106.52.196.69 port 39672 ssh2
May  5 06:20:36 master sshd[30030]: Failed password for invalid user prueba from 106.52.196.69 port 46658 ssh2
2020-05-05 18:08:31
73.193.9.121 attack
Unauthorized connection attempt from IP address 73.193.9.121 on port 587
2020-05-05 18:03:02
85.209.0.103 attackbotsspam
May  5 11:35:55 ourumov-web sshd\[31480\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=85.209.0.103  user=root
May  5 11:35:55 ourumov-web sshd\[31481\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=85.209.0.103  user=root
May  5 11:35:57 ourumov-web sshd\[31480\]: Failed password for root from 85.209.0.103 port 12002 ssh2
...
2020-05-05 18:00:28
213.149.171.218 attackspambots
Unauthorized IMAP connection attempt
2020-05-05 18:25:59
185.202.2.31 attack
2020-05-05T09:40:03Z - RDP login failed multiple times. (185.202.2.31)
2020-05-05 18:10:13

Recently Reported IPs

104.21.66.160 104.21.66.163 104.21.66.165 104.21.66.171
104.21.66.168 104.21.66.172 104.21.66.176 104.21.66.175
104.21.66.178 104.21.70.44 104.21.66.177 104.21.66.182
104.21.66.190 104.21.66.185 104.21.66.188 104.21.66.191
104.21.70.47 104.21.66.207 104.21.66.211 104.21.66.216