城市(city): unknown
省份(region): unknown
国家(country): United States
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 <<>> 206.145.193.81
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 22732
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;206.145.193.81. IN A
;; AUTHORITY SECTION:
. 436 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2020060301 1800 900 604800 86400
;; Query time: 42 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Thu Jun 04 02:42:39 CST 2020
;; MSG SIZE rcvd: 118Host 81.193.145.206.in-addr.arpa not found: 2(SERVFAIL);; Got SERVFAIL reply from 183.60.83.19, trying next server
Server: 183.60.82.98
Address: 183.60.82.98#53
** server can't find 81.193.145.206.in-addr.arpa: SERVFAIL