#!/bin/bash

#start definefine nameservers

NS1=dns1.yourdomain.com
NS2=dns2.yourdomain.com
NS3=dns1.yourlegacydomain.com
NS4=dns2.yourlegacydomain.com

function findNameServer {
	whois $currentdn | grep 'Name\ Server' | sed 's/^ *//' | sort -u
}




cat domains.lst | sort | uniq | while IFS= read -r currentdn ; do
	currentns=$(findNameServer)
	

		if `echo ${currentns} | grep -E "{$NS1|$NS2|$NS3|$NS4}" 1>/dev/null 2>&1`
		then
			#echo "DEBUG: FOUND"
			echo "$currentdn"
		else
			echo "DEBUG: NOT Found" >/dev/null
		fi

	#echo $currentdn
	#echo $currentns

done