How DNS works: a plain explanationWhat happens when you type a web address? A simple walkthrough of DNS — domain hierarchy, resolvers, caching and TTL.How to configure DNS records: A, AAAA, CNAME, MX, and TXT explainedConfigure DNS records for your domain: learn what A, AAAA, CNAME, MX, and TXT records do, when to use each, and how to verify your changes propagate correctly. 