城市(city): unknown
省份(region): unknown
国家(country): Reserved
运营商(isp): unknown
主机名(hostname): unknown
机构(organization): unknown
使用类型(Usage Type): unknown
b; <<>> DiG 9.10.3-P4-Ubuntu <<>> 251.178.4.79
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 11678
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;251.178.4.79. IN A
;; AUTHORITY SECTION:
. 3600 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2019062801 1800 900 604800 86400
;; Query time: 3 msec
;; SERVER: 67.207.67.2#53(67.207.67.2)
;; WHEN: Sat Jun 29 12:21:33 CST 2019
;; MSG SIZE rcvd: 116Host 79.4.178.251.in-addr.arpa. not found: 3(NXDOMAIN)Server: 67.207.67.2
Address: 67.207.67.2#53
** server can't find 79.4.178.251.in-addr.arpa: NXDOMAIN