City: unknown
Region: unknown
Country: China
Internet Service Provider: unknown
Hostname: unknown
Organization: unknown
Usage Type: unknown
b; <<>> DiG 9.10.3-P4-Ubuntu <<>> 223.88.244.221
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 10950
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;223.88.244.221. IN A
;; AUTHORITY SECTION:
. 435 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2022020700 1800 900 604800 86400
;; Query time: 18 msec
;; SERVER: 183.60.83.19#53(183.60.83.19)
;; WHEN: Mon Feb 07 23:05:24 CST 2022
;; MSG SIZE rcvd: 107Host 221.244.88.223.in-addr.arpa. not found: 3(NXDOMAIN)Server: 183.60.83.19
Address: 183.60.83.19#53
** server can't find 221.244.88.223.in-addr.arpa: NXDOMAIN