DNS Glue records
In the third part of DNS series here I will be covering Glue Records in DNS, During normal DNS resolutions, when a resolver attempts to resolve a domain name, it first queries the root, which provides the top-level domain. Next, it queries the top-level domain servers, which provide the domain’s authoritative nameserver's. Finally, it queries the authoritative nameserver's for the domain resolution. If the nameserver's for a domain being resolved exist inside the domain itself, then a helper is needed to resolve the domain. What is a Glue Record ? One may wonder what Glue records are, these are DNS records created at the domain’s registrar. This record provides a complete answer when the TLD nameserver returns a reference for an authoritative nameserver for a domain. For example, the domain name “exampledomain.net” has nameserver's “ns1.exampledomain.net” "ns2.exampledomain.net”. To resolve the domain name, the DNS resolver would query in order i.e root, TLD name...