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:
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Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 104.21.53.66
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 52802
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.53.66.			IN	A

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

;; Query time: 70 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 02:36:25 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 66.53.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 66.53.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
103.214.188.117 attackbots
Aug 15 00:56:50 mail.srvfarm.net postfix/smtps/smtpd[913775]: warning: unknown[103.214.188.117]: SASL PLAIN authentication failed: 
Aug 15 00:56:50 mail.srvfarm.net postfix/smtps/smtpd[913775]: lost connection after AUTH from unknown[103.214.188.117]
Aug 15 01:02:29 mail.srvfarm.net postfix/smtps/smtpd[913607]: warning: unknown[103.214.188.117]: SASL PLAIN authentication failed: 
Aug 15 01:02:30 mail.srvfarm.net postfix/smtps/smtpd[913607]: lost connection after AUTH from unknown[103.214.188.117]
Aug 15 01:06:17 mail.srvfarm.net postfix/smtpd[927804]: warning: unknown[103.214.188.117]: SASL PLAIN authentication failed:
2020-08-15 16:12:49
120.132.13.206 attackspambots
frenzy
2020-08-15 16:43:17
82.141.160.162 attack
Aug 15 00:46:49 mail.srvfarm.net postfix/smtps/smtpd[910045]: warning: unknown[82.141.160.162]: SASL PLAIN authentication failed: 
Aug 15 00:46:49 mail.srvfarm.net postfix/smtps/smtpd[910045]: lost connection after AUTH from unknown[82.141.160.162]
Aug 15 00:50:47 mail.srvfarm.net postfix/smtps/smtpd[910733]: warning: unknown[82.141.160.162]: SASL PLAIN authentication failed: 
Aug 15 00:50:47 mail.srvfarm.net postfix/smtps/smtpd[910733]: lost connection after AUTH from unknown[82.141.160.162]
Aug 15 00:53:21 mail.srvfarm.net postfix/smtpd[910648]: warning: unknown[82.141.160.162]: SASL PLAIN authentication failed:
2020-08-15 16:18:23
198.49.65.34 attackspambots
GET /wp-login.php HTTP/1.1
2020-08-15 16:48:18
46.105.227.206 attack
2020-08-15T06:49:03.380170snf-827550 sshd[32633]: Failed password for root from 46.105.227.206 port 40484 ssh2
2020-08-15T06:52:39.205896snf-827550 sshd[32657]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=46.105.227.206  user=root
2020-08-15T06:52:41.694965snf-827550 sshd[32657]: Failed password for root from 46.105.227.206 port 50268 ssh2
...
2020-08-15 16:52:55
103.75.197.134 attackspambots
Aug 15 00:49:59 mail.srvfarm.net postfix/smtpd[909357]: warning: unknown[103.75.197.134]: SASL PLAIN authentication failed: 
Aug 15 00:50:00 mail.srvfarm.net postfix/smtpd[909357]: lost connection after AUTH from unknown[103.75.197.134]
Aug 15 00:52:23 mail.srvfarm.net postfix/smtpd[908819]: warning: unknown[103.75.197.134]: SASL PLAIN authentication failed: 
Aug 15 00:52:23 mail.srvfarm.net postfix/smtpd[908819]: lost connection after AUTH from unknown[103.75.197.134]
Aug 15 00:53:39 mail.srvfarm.net postfix/smtpd[910663]: warning: unknown[103.75.197.134]: SASL PLAIN authentication failed:
2020-08-15 16:14:38
203.195.150.131 attackspam
frenzy
2020-08-15 16:45:34
180.105.228.112 attackbots
port scan and connect, tcp 23 (telnet)
2020-08-15 16:27:05
37.187.54.45 attack
Failed password for root from 37.187.54.45 port 37502 ssh2
2020-08-15 16:47:42
114.104.135.51 attackspam
Aug 15 07:36:50 srv01 postfix/smtpd\[21398\]: warning: unknown\[114.104.135.51\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Aug 15 07:37:02 srv01 postfix/smtpd\[21398\]: warning: unknown\[114.104.135.51\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Aug 15 07:37:18 srv01 postfix/smtpd\[21398\]: warning: unknown\[114.104.135.51\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Aug 15 07:37:38 srv01 postfix/smtpd\[21398\]: warning: unknown\[114.104.135.51\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
Aug 15 07:37:49 srv01 postfix/smtpd\[21398\]: warning: unknown\[114.104.135.51\]: SASL LOGIN authentication failed: UGFzc3dvcmQ6
...
2020-08-15 16:23:28
84.38.187.195 attack
 TCP (SYN) 84.38.187.195:27754 -> port 3389, len 44
2020-08-15 16:53:40
192.35.168.202 attack
2020-08-14 01:41 SMTP:465 IP autobanned - 7 attempts  a day
2020-08-15 16:46:38
45.227.98.30 attackspambots
Aug 15 01:02:39 mail.srvfarm.net postfix/smtpd[909382]: warning: unknown[45.227.98.30]: SASL PLAIN authentication failed: 
Aug 15 01:02:40 mail.srvfarm.net postfix/smtpd[909382]: lost connection after AUTH from unknown[45.227.98.30]
Aug 15 01:03:49 mail.srvfarm.net postfix/smtpd[910665]: warning: unknown[45.227.98.30]: SASL PLAIN authentication failed: 
Aug 15 01:03:50 mail.srvfarm.net postfix/smtpd[910665]: lost connection after AUTH from unknown[45.227.98.30]
Aug 15 01:07:10 mail.srvfarm.net postfix/smtpd[928328]: warning: unknown[45.227.98.30]: SASL PLAIN authentication failed:
2020-08-15 16:20:48
183.224.31.28 attackspambots
Port Scan
...
2020-08-15 16:31:53
134.122.53.154 attack
2020-08-15T13:53:04.890739billing sshd[4902]: Failed password for root from 134.122.53.154 port 35550 ssh2
2020-08-15T13:56:58.597365billing sshd[13913]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=134.122.53.154  user=root
2020-08-15T13:57:00.958256billing sshd[13913]: Failed password for root from 134.122.53.154 port 46476 ssh2
...
2020-08-15 16:27:33

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