DNS glue records are vital to making your domain work on the internet. DNS glue records are the records that tell other DNS servers where to find the name servers for your domain when your name servers also host DNS records for its own domain. For example…
ns1.domain.com
In order for a DNS server to find the IP address associated with “domain.com”, it has to know where to look to find the DNS records for “domain.com”. If that name server happens to be “ns1.domain.com”, that’s where DNS glue records come into play.
DNS glue records prevent circular dependencies with resolving the IP address for “ns1.domain.com” when ns1.domain.com also hosts the records for domain.com. The solution is to setup a record with the registrar of domain.com to tell what the IP is for its nameservers. This is the starting point for looking up any records that have the same domain name as the nameservers themselves.
Useful Tools and More Documentation
Here’s a site you can use to check your domain’s glue records:
Here’s some helpful documentation on glue records from another DNS provider and Wikipedia:
https://ns1.com/blog/glue-records-and-dedicated-dns
https://en.wikipedia.org/wiki/Domain_Name_System#Circular_dependencies_and_glue_records
Leave a comment below if this helped you or if you have any questions about DNS glue records. I would be glad to help where I can.
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