城市(city): unknown
省份(region): unknown
国家(country): United States of America (the)
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 <<>> 55.81.30.185
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 6641
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;55.81.30.185. IN A
;; AUTHORITY SECTION:
. 30 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2025022500 1800 900 604800 86400
;; Query time: 14 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Tue Feb 25 18:12:42 CST 2025
;; MSG SIZE rcvd: 105Host 185.30.81.55.in-addr.arpa not found: 2(SERVFAIL)
server can't find 55.81.30.185.in-addr.arpa: SERVFAIL