Pentru a verifica funcționarea serviciului DNS, putem folosi comenzi precum host sau dig care sunt aplicații de tip client DNS. Aceste aplicații interoghează server-ul DNS și afișează informațiile cerute.

Mai jos, aflăm adresa IP a domeniului hotnews.ro folosind host și dig:

student@eg106-pc:~$ host hotnews.ro
hotnews.ro has address 91.195.7.1
hotnews.ro mail is handled by 10 smtp.hotnews.ro.

student@eg106-pc:~$ dig hotnews.ro

; <<>> DiG 9.9.5-9ubuntu0.3-Ubuntu <<>> hotnews.ro
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 11548
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 5

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;hotnews.ro.			IN	A

;; ANSWER SECTION:
hotnews.ro.		86388	IN	A	91.195.7.1

;; AUTHORITY SECTION:
hotnews.ro.		69394	IN	NS	ns-1701.awsdns-20.co.uk.
hotnews.ro.		69394	IN	NS	ns-1148.awsdns-15.org.
hotnews.ro.		69394	IN	NS	ns-943.awsdns-53.net.
hotnews.ro.		69394	IN	NS	ns-302.awsdns-37.com.

;; ADDITIONAL SECTION:
ns-302.awsdns-37.com.	22667	IN	A	205.251.193.46
ns-943.awsdns-53.net.	22667	IN	A	205.251.195.175
ns-1148.awsdns-15.org.	100500	IN	A	205.251.196.124
ns-1701.awsdns-20.co.uk. 22667	IN	A	205.251.198.165

;; Query time: 1 msec
;; SERVER: 127.0.1.1#53(127.0.1.1)
;; WHEN: Thu Dec 03 13:31:01 EET 2015
;; MSG SIZE  rcvd: 259

TODO

TODO

TODO

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