root@localhost:~# nslookup
> set query=ns
> foo.org
Server:         8.8.8.8
Address:        8.8.8.8#53

Non-authoritative answer:
foo.org       nameserver = dns5.name-services.com.
foo.org       nameserver = dns3.name-services.com.
foo.org       nameserver = dns4.name-services.com.
foo.org       nameserver = dns2.name-services.com.
foo.org       nameserver = dns1.name-services.com.

Authoritative answers can be found from: