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 of America (the)

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 <<>> 104.21.167.66
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 4987
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.167.66.			IN	A

;; AUTHORITY SECTION:
.			30	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2025022801 1800 900 604800 86400

;; Query time: 63 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Sat Mar 01 04:28:47 CST 2025
;; MSG SIZE  rcvd: 106
Host info
Host 66.167.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 66.167.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
117.50.6.208 attack
2019-12-24T09:25:58.084646beta postfix/smtpd[11341]: warning: unknown[117.50.6.208]: SASL LOGIN authentication failed: authentication failure
2019-12-24T09:26:03.040673beta postfix/smtpd[11341]: warning: unknown[117.50.6.208]: SASL LOGIN authentication failed: authentication failure
2019-12-24T09:26:08.808515beta postfix/smtpd[11341]: warning: unknown[117.50.6.208]: SASL LOGIN authentication failed: authentication failure
...
2019-12-24 22:10:51
165.22.61.82 attackspambots
Dec 24 20:59:13 itv-usvr-02 sshd[17304]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=165.22.61.82  user=root
Dec 24 20:59:15 itv-usvr-02 sshd[17304]: Failed password for root from 165.22.61.82 port 49348 ssh2
Dec 24 21:02:55 itv-usvr-02 sshd[17315]: Invalid user bet from 165.22.61.82 port 54082
Dec 24 21:02:55 itv-usvr-02 sshd[17315]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=165.22.61.82
Dec 24 21:02:55 itv-usvr-02 sshd[17315]: Invalid user bet from 165.22.61.82 port 54082
Dec 24 21:02:57 itv-usvr-02 sshd[17315]: Failed password for invalid user bet from 165.22.61.82 port 54082 ssh2
2019-12-24 22:15:19
185.253.250.173 attack
CloudCIX Reconnaissance Scan Detected, PTR: host-good.com.
2019-12-24 22:19:15
88.89.44.167 attackbotsspam
$f2bV_matches
2019-12-24 21:40:24
113.108.130.157 attackspam
Scanning random ports - tries to find possible vulnerable services
2019-12-24 21:48:02
46.38.144.117 attackspam
Dec 24 15:16:54 relay postfix/smtpd\[17762\]: warning: unknown\[46.38.144.117\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Dec 24 15:17:19 relay postfix/smtpd\[15508\]: warning: unknown\[46.38.144.117\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Dec 24 15:18:33 relay postfix/smtpd\[6540\]: warning: unknown\[46.38.144.117\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Dec 24 15:19:05 relay postfix/smtpd\[22345\]: warning: unknown\[46.38.144.117\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Dec 24 15:20:15 relay postfix/smtpd\[17762\]: warning: unknown\[46.38.144.117\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...
2019-12-24 22:21:38
173.44.36.101 attackbots
1,23-14/07 [bc01/m09] PostRequest-Spammer scoring: paris
2019-12-24 21:53:41
196.200.184.22 attack
$f2bV_matches
2019-12-24 22:09:12
104.248.121.67 attackspambots
Invalid user splieth from 104.248.121.67 port 38244
2019-12-24 21:50:28
139.155.82.119 attackbotsspam
Dec 24 13:16:07 server sshd\[12326\]: Invalid user waya from 139.155.82.119
Dec 24 13:16:07 server sshd\[12326\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=139.155.82.119 
Dec 24 13:16:09 server sshd\[12326\]: Failed password for invalid user waya from 139.155.82.119 port 51540 ssh2
Dec 24 13:21:08 server sshd\[13678\]: Invalid user test from 139.155.82.119
Dec 24 13:21:08 server sshd\[13678\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=139.155.82.119 
...
2019-12-24 22:17:07
218.212.102.176 attack
CloudCIX Reconnaissance Scan Detected, PTR: 176.102.212.218.starhub.net.sg.
2019-12-24 22:10:15
183.47.14.74 attackbots
Dec 24 12:01:23 master sshd[15873]: Failed password for root from 183.47.14.74 port 40019 ssh2
2019-12-24 22:18:19
193.226.218.75 attackbotsspam
firewall-block, port(s): 2222/tcp
2019-12-24 22:02:34
139.199.113.140 attack
Invalid user asterisk from 139.199.113.140 port 59708
2019-12-24 21:37:54
222.186.173.183 attack
Dec 24 14:42:38 h2177944 sshd\[7175\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=222.186.173.183  user=root
Dec 24 14:42:40 h2177944 sshd\[7175\]: Failed password for root from 222.186.173.183 port 14598 ssh2
Dec 24 14:42:44 h2177944 sshd\[7175\]: Failed password for root from 222.186.173.183 port 14598 ssh2
Dec 24 14:42:47 h2177944 sshd\[7175\]: Failed password for root from 222.186.173.183 port 14598 ssh2
...
2019-12-24 21:47:15

Recently Reported IPs

252.22.86.39 75.191.237.68 95.208.50.120 12.39.185.105
48.13.159.140 17.197.134.241 86.185.142.21 181.146.77.151
139.87.246.94 72.28.192.6 17.25.98.56 189.101.68.185
157.84.215.252 198.226.166.201 59.119.128.174 243.157.18.23
5.115.230.22 25.96.238.94 124.229.87.247 104.170.197.188