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 <<>> 55.21.20.121
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 7227
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;55.21.20.121.			IN	A

;; AUTHORITY SECTION:
.			370	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2022011002 1800 900 604800 86400

;; Query time: 19 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Tue Jan 11 14:48:53 CST 2022
;; MSG SIZE  rcvd: 105
Host info
Host 121.20.21.55.in-addr.arpa not found: 2(SERVFAIL)
Nslookup info:
server can't find 55.21.20.121.in-addr.arpa: SERVFAIL
Related IP info:
Related comments:
IP Type Details Datetime
139.130.206.73 attack
Unauthorized IMAP connection attempt
2020-08-25 00:54:08
187.11.113.231 attackbots
Aug 24 08:45:09 ws24vmsma01 sshd[125221]: Failed password for root from 187.11.113.231 port 7915 ssh2
...
2020-08-25 00:36:02
203.189.142.34 attack
(sshd) Failed SSH login from 203.189.142.34 (KH/Cambodia/-): 12 in the last 3600 secs
2020-08-25 00:42:51
222.186.175.217 attackbotsspam
Multiple SSH login attempts.
2020-08-25 00:47:50
111.161.74.106 attackspambots
Aug 24 12:26:47 NPSTNNYC01T sshd[7245]: Failed password for root from 111.161.74.106 port 34672 ssh2
Aug 24 12:31:17 NPSTNNYC01T sshd[7653]: Failed password for root from 111.161.74.106 port 34019 ssh2
...
2020-08-25 00:38:46
61.55.158.20 attack
2020-08-24T16:41:10.343196shield sshd\[7023\]: Invalid user arthur from 61.55.158.20 port 34385
2020-08-24T16:41:10.362210shield sshd\[7023\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=61.55.158.20
2020-08-24T16:41:12.361910shield sshd\[7023\]: Failed password for invalid user arthur from 61.55.158.20 port 34385 ssh2
2020-08-24T16:45:14.083172shield sshd\[7366\]: Invalid user yong from 61.55.158.20 port 34386
2020-08-24T16:45:14.092009shield sshd\[7366\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=61.55.158.20
2020-08-25 00:45:31
177.101.46.65 attack
1598269716 - 08/24/2020 13:48:36 Host: 177.101.46.65/177.101.46.65 Port: 445 TCP Blocked
2020-08-25 00:48:12
195.206.105.217 attack
Dovecot Invalid User Login Attempt.
2020-08-25 00:49:57
116.228.39.82 attack
Brute force attempt
2020-08-25 01:09:10
5.135.164.201 attackbotsspam
Aug 24 09:41:18 dignus sshd[25202]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.135.164.201  user=root
Aug 24 09:41:20 dignus sshd[25202]: Failed password for root from 5.135.164.201 port 56508 ssh2
Aug 24 09:45:11 dignus sshd[25674]: Invalid user xinyi from 5.135.164.201 port 37156
Aug 24 09:45:11 dignus sshd[25674]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=5.135.164.201
Aug 24 09:45:13 dignus sshd[25674]: Failed password for invalid user xinyi from 5.135.164.201 port 37156 ssh2
...
2020-08-25 01:02:43
187.9.110.186 attackbots
(sshd) Failed SSH login from 187.9.110.186 (BR/Brazil/187-9-110-186.customer.tdatabrasil.net.br): 5 in the last 3600 secs; Ports: *; Direction: inout; Trigger: LF_SSHD; Logs: Aug 24 19:10:35 srv sshd[1491]: Invalid user admin1 from 187.9.110.186 port 41677
Aug 24 19:10:36 srv sshd[1491]: Failed password for invalid user admin1 from 187.9.110.186 port 41677 ssh2
Aug 24 19:23:29 srv sshd[1818]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=187.9.110.186  user=root
Aug 24 19:23:31 srv sshd[1818]: Failed password for root from 187.9.110.186 port 57966 ssh2
Aug 24 19:28:16 srv sshd[1963]: Invalid user svn from 187.9.110.186 port 33969
2020-08-25 01:07:01
144.34.221.254 attackbotsspam
Invalid user ix from 144.34.221.254 port 40082
2020-08-25 00:39:46
138.68.253.149 attackspam
Aug 24 18:32:30 root sshd[24489]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.68.253.149 
Aug 24 18:32:32 root sshd[24489]: Failed password for invalid user owen from 138.68.253.149 port 59400 ssh2
Aug 24 18:42:56 root sshd[26012]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=138.68.253.149 
...
2020-08-25 00:44:15
124.193.70.246 attackbotsspam
Probing for vulnerable services
2020-08-25 00:50:33
138.91.182.63 attackspam
srvr2: (mod_security) mod_security (id:920350) triggered by 138.91.182.63 (US/-/-): 1 in the last 600 secs; Ports: *; Direction: inout; Trigger: LF_MODSEC; Logs: 2020/08/24 13:48:44 [error] 1087850#0: *1279801 [client 138.91.182.63] ModSecurity: Access denied with code 406 (phase 2). Matched "Operator `Rx' with parameter `^[\d.:]+$' against variable `REQUEST_HEADERS:Host'  [redacted] [file "/etc/modsecurity.d/REQUEST-920-PROTOCOL-ENFORCEMENT.conf"] [line "718"] [id "920350"] [rev ""] [msg "Host header is a numeric IP address"] [redacted] [severity "4"] [ver "OWASP_CRS/3.3.0"] [maturity "0"] [accuracy "0"] [tag "application-multi"] [tag "language-multi"] [tag "platform-multi"] [tag "attack-protocol"] [tag "paranoia-level/1"] [tag "OWASP_CRS"] [tag "capec/1000/210/272"] [tag "PCI/6.5.10"] [redacted] [uri "/"] [unique_id "159826972413.806016"] [ref "o0,12v124,12"], client: 138.91.182.63, [redacted] request: "GET / HTTP/1.1" [redacted]
2020-08-25 00:36:32

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