A simple DNS lookup tool
Domain 213.133.100.102
Type PTR
Server Cloudflare
Duration 543 ms
Results
;; Answer received from 1.1.1.1 (78 bytes)
;;
;; Security Level : UNCHECKED
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 61845
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION (1  record)
;; 102.100.133.213.in-addr.arpa.	IN	PTR

;; ANSWER SECTION (1  record)
102.100.133.213.in-addr.arpa.	86400	IN	PTR	ns1.your-server.de.
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