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: South Korea

Internet Service Provider: unknown

Hostname: unknown

Organization: Seokyung Cable Television Co.. Ltd.

Usage Type: unknown

Comments:
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Comments on same subnet:
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Whois info:
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Dig info:

; <<>> DiG 9.10.3-P4-Ubuntu <<>> 121.1.83.31
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 28258
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

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

;; AUTHORITY SECTION:
.			2015	IN	SOA	a.root-servers.net. nstld.verisign-grs.com. 2019040701 1800 900 604800 86400

;; Query time: 0 msec
;; SERVER: 67.207.67.3#53(67.207.67.3)
;; WHEN: Mon Apr 08 12:28:15 +08 2019
;; MSG SIZE  rcvd: 115
Host info
Host 31.83.1.121.in-addr.arpa. not found: 3(NXDOMAIN)
Nslookup info:
Server:		67.207.67.3
Address:	67.207.67.3#53

** server can't find 31.83.1.121.in-addr.arpa: NXDOMAIN
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