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:
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Dig info:
; <<>> DiG 9.10.3-P4-Ubuntu <<>> 104.21.55.123
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 20611
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;104.21.55.123.			IN	A

;; AUTHORITY SECTION:
.			127	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022022001 1800 900 604800 86400

;; Query time: 183 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Mon Feb 21 11:41:26 CST 2022
;; MSG SIZE  rcvd: 106
Host info
Host 123.55.21.104.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		183.60.83.19
Address:	183.60.83.19#53

** server can't find 123.55.21.104.in-addr.arpa: NXDOMAIN
Related IP info:
Related comments:
IP Type Details Datetime
88.245.133.246 attackbotsspam
Unauthorized connection attempt from IP address 88.245.133.246 on Port 445(SMB)
2020-06-02 02:16:20
222.186.139.72 attackspam
Attempted Brute Force (dovecot)
2020-06-02 02:25:17
197.51.3.85 attack
Unauthorized connection attempt from IP address 197.51.3.85 on Port 445(SMB)
2020-06-02 02:21:51
92.222.74.255 attackbots
Jun  1 10:07:51 mockhub sshd[29342]: Failed password for root from 92.222.74.255 port 48290 ssh2
...
2020-06-02 02:36:37
167.71.153.79 attack
(sshd) Failed SSH login from 167.71.153.79 (US/United States/-): 2 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SSHD; Logs: Jun  1 15:47:35 ubnt-55d23 sshd[13582]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=167.71.153.79  user=root
Jun  1 15:47:37 ubnt-55d23 sshd[13582]: Failed password for root from 167.71.153.79 port 44596 ssh2
2020-06-02 02:31:58
60.190.243.230 attack
Jun  1 23:14:28 gw1 sshd[13583]: Failed password for root from 60.190.243.230 port 62360 ssh2
...
2020-06-02 02:28:17
218.92.0.172 attack
Jun  1 20:12:58 h1745522 sshd[26876]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=218.92.0.172  user=root
Jun  1 20:13:00 h1745522 sshd[26876]: Failed password for root from 218.92.0.172 port 29239 ssh2
Jun  1 20:13:03 h1745522 sshd[26876]: Failed password for root from 218.92.0.172 port 29239 ssh2
Jun  1 20:12:58 h1745522 sshd[26876]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=218.92.0.172  user=root
Jun  1 20:13:00 h1745522 sshd[26876]: Failed password for root from 218.92.0.172 port 29239 ssh2
Jun  1 20:13:03 h1745522 sshd[26876]: Failed password for root from 218.92.0.172 port 29239 ssh2
Jun  1 20:12:58 h1745522 sshd[26876]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=218.92.0.172  user=root
Jun  1 20:13:00 h1745522 sshd[26876]: Failed password for root from 218.92.0.172 port 29239 ssh2
Jun  1 20:13:03 h1745522 sshd[26876]: Failed password for root fr
...
2020-06-02 02:19:06
152.0.245.22 attack
Email Spoofing
2020-06-02 02:49:22
141.98.9.137 attackbots
$f2bV_matches | Triggered by Fail2Ban at Vostok web server
2020-06-02 02:15:30
141.98.9.160 attack
Jun  1 20:28:42 haigwepa sshd[25000]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=141.98.9.160 
Jun  1 20:28:44 haigwepa sshd[25000]: Failed password for invalid user user from 141.98.9.160 port 45053 ssh2
...
2020-06-02 02:39:01
111.229.79.169 attack
$f2bV_matches
2020-06-02 02:20:22
36.77.40.241 attack
Unauthorized connection attempt from IP address 36.77.40.241 on Port 445(SMB)
2020-06-02 02:38:10
80.227.193.178 attackbots
Port probing on unauthorized port 8089
2020-06-02 02:30:29
177.152.159.33 attackspam
20/6/1@08:04:11: FAIL: Alarm-Telnet address from=177.152.159.33
...
2020-06-02 02:22:10
95.152.63.155 attackspambots
Unauthorized connection attempt from IP address 95.152.63.155 on Port 445(SMB)
2020-06-02 02:51:37

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