go get github.com/miekg/dns
go build -o resolve
list google sites in top 500
./resolve -i top500.txt | grep "google.com"
| domain | namserver | nameserver | status |
|---|---|---|---|
| youtube.com | ns1.google.com. | ns3.google.com. | SUCCESS |
| google.com | ns3.google.com. | ns2.google.com. | SUCCESS |
| blogspot.com | ns1.google.com. | ns2.google.com. | SUCCESS |
| youtu.be | ns2.google.com. | ns1.google.com. | SUCCESS |
| goo.gl | ns3.google.com. | ns2.google.com. | SUCCESS |
| google.de | ns4.google.com. | ns2.google.com. | SUCCESS |
| blogger.com | ns1.google.com. | ns3.google.com. | SUCCESS |
| feedburner.com | ns1.google.com. | ns3.google.com. | SUCCESS |
| google.co.uk | ns1.google.com. | ns2.google.com. | SUCCESS |
| blogspot.co.uk | ns4.google.com. | ns2.google.com. | SUCCESS |
| doubleclick.net | ns2.google.com. | ns3.google.com. | SUCCESS |
| google.fr | ns1.google.com. | ns3.google.com. | SUCCESS |
| google.ca | ns3.google.com. | ns1.google.com. | SUCCESS |
| googleusercontent.com | ns1.google.com. | ns2.google.com. | SUCCESS |
| blogspot.com.es | ns2.google.com. | ns4.google.com. | SUCCESS |
| blogspot.de | ns4.google.com. | ns3.google.com. | SUCCESS |
| blogspot.ca | ns4.google.com. | ns2.google.com. | SUCCESS |
| google.nl | ns4.google.com. | ns3.google.com. | SUCCESS |
| blogspot.fr | ns1.google.com. | ns2.google.com. | SUCCESS |
| google.com.br | ns2.google.com. | ns4.google.com. | SUCCESS |
| google.com.au | ns3.google.com. | ns1.google.com. | SUCCESS |
| android.com | ns1.google.com. | ns4.google.com. | SUCCESS |
| blogspot.in | ns1.google.com. | ns3.google.com. | SUCCESS |
| blogspot.jp | ns1.google.com. | ns3.google.com. | SUCCESS |