namegrep - Domain name search with regular expressions and curated sets
Whats My DNS - Instantly check your domain names current IP address and DNS record information against multiple name servers located in different parts of the world.
BrandBucket - The original marketplace for business names and creative domain names.
DNSChecker.org - Check DNS Propagation worldwide. DNS Checker provides name server propagation check instantly. Changed nameservers so do a DNS lookup and check if DNS and nameservers have propagated.
The Name Combiner - Name combiner is a name creator tool that basically helps to combine or generate unique nickenames for your baby, lover, animal and so on, keep visiting!
NsLookup.io - A simple and powerful tool for querying DNS records