12 out of 13 gtld servers agree:
[alumange:~] iljitsch% host -v www.imdb.com m.gtld-servers.net
Trying "www.imdb.com"
Using domain server:
Name: m.gtld-servers.net
Address: 192.55.83.30#53
Aliases:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 60746
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 2
;; QUESTION SECTION:
;www.imdb.com. IN A
;; AUTHORITY SECTION:
imdb.com. 172800 IN NS udns1.ultradns.net.
imdb.com. 172800 IN NS udns2.ultradns.net.
;; ADDITIONAL SECTION:
udns1.ultradns.net. 172800 IN A 204.69.234.1
udns2.ultradns.net. 172800 IN A 204.74.101.1
But k says something different:
[alumange:~] iljitsch% host -v www.imdb.com k.gtld-servers.net
Trying "www.imdb.com"
Using domain server:
Name: k.gtld-servers.net
Address: 218.234.22.221#53
Aliases:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 248
;; flags: qr aa rd; QUERY: 1, ANSWER: 2, AUTHORITY: 6, ADDITIONAL: 12
;; QUESTION SECTION:
;www.imdb.com. IN A
;; ANSWER SECTION:
www.imdb.com. 1800 IN A 200.139.105.69
www.imdb.com. 1800 IN A 218.234.22.221
;; AUTHORITY SECTION:
com. 1800 IN NS ns1.thirdfloordoors02.com.
com. 1800 IN NS ns1.thirdfloordoors03.com.
com. 1800 IN NS ns1.thirdfloordoors04.com.
com. 1800 IN NS ns1.thirdfloordoors05.com.
com. 1800 IN NS ns1.thirdfloordoors06.com.
com. 1800 IN NS ns1.thirdfloordoors01.com.
;; ADDITIONAL SECTION:
ns1.thirdfloordoors01.com. 1800 IN A 200.139.105.69
ns1.thirdfloordoors01.com. 1800 IN A 218.234.22.221
ns1.thirdfloordoors02.com. 1800 IN A 218.234.22.221
ns1.thirdfloordoors02.com. 1800 IN A 200.139.105.69
ns1.thirdfloordoors03.com. 1800 IN A 200.139.105.69
ns1.thirdfloordoors03.com. 1800 IN A 218.234.22.221
ns1.thirdfloordoors04.com. 1800 IN A 218.234.22.221
ns1.thirdfloordoors04.com. 1800 IN A 200.139.105.69
ns1.thirdfloordoors05.com. 1800 IN A 200.139.105.69
ns1.thirdfloordoors05.com. 1800 IN A 218.234.22.221
ns1.thirdfloordoors06.com. 1800 IN A 218.234.22.221
ns1.thirdfloordoors06.com. 1800 IN A 200.139.105.69
Received 470 bytes from 218.234.22.221#53 in 1184 ms