Amazon does too: C:\>nslookup > set type=ns > amazon.com Non-authoritative answer: amazon.com nameserver = ns3.p31.dynect.net amazon.com

Amazon does too: C:\>nslookup > set type=ns > amazon.com Non-authoritative answer: amazon.com nameserver = ns3.p31.dynect.net amazon.com nameserver = pdns1.ultradns.net amazon.com nameserver = ns4.p31.dynect.net amazon.com nameserver = pdns6.ultradns.co.uk amazon.com nameserver = ns1.p31.dynect.net amazon.com nameserver = ns2.p31.dynect.net