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: None

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 <<>> 104.21.55.121
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 15425
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.55.121.			IN	A

;; AUTHORITY SECTION:
.			432	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022021702 1800 900 604800 86400

;; Query time: 56 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Fri Feb 18 10:13:20 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 121.55.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 121.55.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
201.230.120.6 attack
Port Scan
...
2020-07-18 01:30:31
1.6.103.18 attackspam
Jul 17 19:35:12 *hidden* sshd[55049]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=1.6.103.18 Jul 17 19:35:14 *hidden* sshd[55049]: Failed password for invalid user www from 1.6.103.18 port 39978 ssh2
2020-07-18 02:00:15
182.56.106.203 attackspambots
2020-07-17 14:10:15,212 fail2ban.actions: WARNING [ssh] Ban 182.56.106.203
2020-07-18 02:00:57
52.201.63.230 attack
Email rejected due to spam filtering
2020-07-18 01:45:35
148.244.151.42 attack
20/7/17@08:10:11: FAIL: Alarm-Network address from=148.244.151.42
...
2020-07-18 02:04:00
68.183.147.58 attack
Jul 17 17:10:04 ovpn sshd\[14466\]: Invalid user dle from 68.183.147.58
Jul 17 17:10:04 ovpn sshd\[14466\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=68.183.147.58
Jul 17 17:10:06 ovpn sshd\[14466\]: Failed password for invalid user dle from 68.183.147.58 port 48558 ssh2
Jul 17 17:22:03 ovpn sshd\[17382\]: Invalid user jessica from 68.183.147.58
Jul 17 17:22:03 ovpn sshd\[17382\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=68.183.147.58
2020-07-18 01:54:33
138.197.25.187 attackbotsspam
2020-07-17T20:48:18.740308mail.standpoint.com.ua sshd[3326]: Invalid user grafana from 138.197.25.187 port 47524
2020-07-17T20:48:18.744000mail.standpoint.com.ua sshd[3326]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.197.25.187
2020-07-17T20:48:18.740308mail.standpoint.com.ua sshd[3326]: Invalid user grafana from 138.197.25.187 port 47524
2020-07-17T20:48:20.534791mail.standpoint.com.ua sshd[3326]: Failed password for invalid user grafana from 138.197.25.187 port 47524 ssh2
2020-07-17T20:50:57.688045mail.standpoint.com.ua sshd[3696]: Invalid user bnc from 138.197.25.187 port 38886
...
2020-07-18 01:54:11
145.239.11.166 attackspam
Automatic report - Banned IP Access
2020-07-18 01:37:29
42.118.50.250 attackbots
Email rejected due to spam filtering
2020-07-18 01:46:59
192.99.4.63 attackbots
192.99.4.63 - - [17/Jul/2020:18:49:52 +0100] "POST /wp-login.php HTTP/1.1" 200 5582 "-" "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.80 Safari/537.36"
192.99.4.63 - - [17/Jul/2020:18:51:23 +0100] "POST /wp-login.php HTTP/1.1" 200 5575 "-" "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.80 Safari/537.36"
192.99.4.63 - - [17/Jul/2020:18:52:56 +0100] "POST /wp-login.php HTTP/1.1" 200 5575 "-" "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.80 Safari/537.36"
...
2020-07-18 02:00:36
118.70.175.209 attackbotsspam
Jul 17 16:05:01 piServer sshd[645]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=118.70.175.209 
Jul 17 16:05:03 piServer sshd[645]: Failed password for invalid user xiaomei from 118.70.175.209 port 52360 ssh2
Jul 17 16:10:00 piServer sshd[1261]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=118.70.175.209 
...
2020-07-18 01:32:03
203.109.114.31 attackspam
IP 203.109.114.31 attacked honeypot on port: 8080 at 7/17/2020 5:10:08 AM
2020-07-18 01:38:34
103.47.242.198 attackbotsspam
Brute-force attempt banned
2020-07-18 01:55:55
78.128.113.114 attack
2020-07-17 19:32:43 dovecot_login authenticator failed for \(\[78.128.113.114\]\) \[78.128.113.114\]: 535 Incorrect authentication data \(set_id=postmaster@opso.it\)
2020-07-17 19:32:50 dovecot_login authenticator failed for \(\[78.128.113.114\]\) \[78.128.113.114\]: 535 Incorrect authentication data
2020-07-17 19:32:59 dovecot_login authenticator failed for \(\[78.128.113.114\]\) \[78.128.113.114\]: 535 Incorrect authentication data
2020-07-17 19:33:04 dovecot_login authenticator failed for \(\[78.128.113.114\]\) \[78.128.113.114\]: 535 Incorrect authentication data
2020-07-17 19:33:16 dovecot_login authenticator failed for \(\[78.128.113.114\]\) \[78.128.113.114\]: 535 Incorrect authentication data
2020-07-18 01:34:00
185.39.9.30 attackbots
firewall-block, port(s): 12027/tcp, 12039/tcp, 12082/tcp, 12108/tcp, 12123/tcp, 12131/tcp, 12190/tcp, 12240/tcp, 12244/tcp, 12275/tcp, 12319/tcp, 12332/tcp, 12347/tcp, 12391/tcp, 12414/tcp, 12435/tcp, 12436/tcp, 12544/tcp, 12546/tcp, 12551/tcp, 12614/tcp, 12651/tcp, 12654/tcp, 12666/tcp, 12727/tcp, 12728/tcp, 12779/tcp, 12792/tcp, 12797/tcp
2020-07-18 01:57:16

Recently Reported IPs

101.175.60.224 104.21.55.138 104.21.55.159 104.21.55.167
104.21.55.168 104.21.55.158 104.21.55.146 104.21.55.194
104.21.55.198 104.21.55.18 13.225.71.37 104.21.55.2
104.21.55.200 104.21.55.210 104.21.55.215 104.21.55.214
104.21.55.225 104.21.55.224 104.21.55.230 104.21.55.237