Hosting a sub-domain some where else.

[Ellimist]

But I think you're wrong about co.cc. Try doing an NS lookup for a co.cc sub-domain. You'll only see A records, no NS records. My guess is, co.cc's name servers query the user-supplied name servers and serve the effective IP address as an A record. Sounds like a bit of a hack, but that's the only way I can see that happening

Such a setup is absurd. In actuality, CO.CC has provisions for both NS and A records.

soumik@erek:~# dig @8.8.8.8 vdorocks.co.cc NS

; <<>> DiG 9.9.0-2 <<>> @8.8.8.8 vdorocks.co.cc NS
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 29288
;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;vdorocks.co.cc.                        IN      NS

;; ANSWER SECTION:
vdorocks.co.cc.         3600    IN      NS      ns1.cloudns.net.
vdorocks.co.cc.         3600    IN      NS      ns3.cloudns.net.
vdorocks.co.cc.         3600    IN      NS      ns4.cloudns.net.
vdorocks.co.cc.         3600    IN      NS      ns2.cloudns.net.

;; Query time: 380 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Sun May  6 15:34:13 2012
;; MSG SIZE  rcvd: 115

Also, I've never seen the option of adding NS records for sub-domains in registrar control panels. I guess I'll need to use a third-party (usually paid) DNS service?

How about running your own DNS server and editing the zone file directly?

[ander]

In actuality, CO.CC has provisions for both NS and A records.

You're right about vdorocks.co.cc. None of the sub-domains I checked had NS records.

How about running your own DNS server and editing the zone file directly?

Surely finding out the server IP address is easier than that?

[Ellimist]

Surely finding out the server IP address is easier than that?

Indeed. But for adding NS records for sub-domains(or sub sub domains, if you wish) you do not need to go to that length. Most of the domain registrars I have used, including my current provider, InternetBS, allow NS record for sub domains. As far as I remember, GoDaddy does too; although I can't verify now since I don't have any domains with them. So does free DNS providers like, ZoneEdit, HE and the like.