Re:Benchmarking DNS response times of TLDs
by Ayesh on Friday January 10, 2020 @09:00PM
(#22017529)
With a vanity domain, you can fully control the TTL values. All my sites use a vanity domain because it doesn't tie me to a particular CDN, and they have 86400 TTL.
When you have a vanity domain like cdn.example.com, the recursive resolver already knows the nameservers for example.com, so this actually reduces the additional DNS lookups.
When you have a vanity domain like cdn.example.com, the recursive resolver already knows the nameservers for example.com, so this actually reduces the additional DNS lookups.