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: Japan

Internet Service Provider: unknown

Hostname: unknown

Organization: Research Organization of Information and Systems, National Institute of Informatics

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 <<>> 202.254.21.27
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 11835
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;202.254.21.27.			IN	A

;; AUTHORITY SECTION:
.			3600	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2019071300 1800 900 604800 86400

;; Query time: 2 msec
;; SERVER: 67.207.67.2#53(67.207.67.2)
;; WHEN: Sun Jul 14 01:03:23 CST 2019
;; MSG SIZE  rcvd: 117
Host info
Host 27.21.254.202.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		67.207.67.2
Address:	67.207.67.2#53

** server can't find 27.21.254.202.in-addr.arpa: NXDOMAIN
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Related comments:
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Feb 11 07:40:27 server sshd\[14124\]: Invalid user kjc from 51.89.28.247
Feb 11 07:40:27 server sshd\[14124\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=ip247.ip-51-89-28.eu 
Feb 11 07:40:29 server sshd\[14124\]: Failed password for invalid user kjc from 51.89.28.247 port 38998 ssh2
Feb 11 10:02:36 server sshd\[5819\]: Invalid user mgq from 51.89.28.247
Feb 11 10:02:36 server sshd\[5819\]: pam_unix\(sshd:auth\): authentication failure\; logname= uid=0 euid=0 tty=ssh ruser= rhost=ip247.ip-51-89-28.eu 
...
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