DNS Lookup listers the DNS records by priority order. The DNS lookup is done on the authoritative server of the domain. In other words, DNS Lookup is a tool that shows DNS records. This DNS record is A, AAAA, CNAME, MX, NS, SOA and TXT. All you have to do for DNS lookup is to type in your domain name. The results are A, AAAA, CNAME, MX, NS, SOA and TXT and IP address and duration (TTL).