City: Mita
Region: Tokyo
Country: Japan
Internet Service Provider: SoftBank
Hostname: unknown
Organization: Softbank BB Corp.
Usage Type: unknown
b; <<>> DiG 9.10.3-P4-Ubuntu <<>> 61.193.172.218
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 50827
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;61.193.172.218. IN A
;; AUTHORITY SECTION:
. 3600 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2019072301 1800 900 604800 86400
;; Query time: 2 msec
;; SERVER: 67.207.67.2#53(67.207.67.2)
;; WHEN: Wed Jul 24 02:26:15 CST 2019
;; MSG SIZE rcvd: 118Host 218.172.193.61.in-addr.arpa. not found: 3(NXDOMAIN)Server: 67.207.67.2
Address: 67.207.67.2#53
** server can't find 218.172.193.61.in-addr.arpa: NXDOMAIN