DNS Glue Record Checker

Lookup DNS glue records

What does DNS glue record checker do?

To check the glue records we first looks up the NS records for the domains TLD, you can specify a nameserver for this lookup otherwise it will use our servers local caching resolver. An NS record lookup is then done for the domain from one of the root servers returned, these are the glue records.

What is a glue record?

A glue record is the IP address of a name server held at the domain name registry. Glue records are required when you wish to set the name servers of a domain name to a hostname under the domain name itself.

For example if you wished to set the name servers of example.com to ns1.example.com and ns2.example.com you would need to also provide the glue records (i.e. the IP addresses) for ns1.example.com and ns2.example.com.
https://en.wikipedia.org/wiki/Domain_Name_System#Circular_dependencies_and_glue_records