Route 53 Basics

  • IANA delegates organisations to take care of the different registries (.net, .io, .com etc)
    • PIR is responsible for .org
  • IANA takes care of root DNS zone
  • Global service, single database, Globally resilient
  • Zone files are created by AWS when registering a domain, it’s a database containing all the details about a domain
  • A hosted zone hosts DNS records (within AWS) & can be public, or private (linked to one or more VPCs )
  • Managed Name Servers
    • Name Servers are how DNS delegation works
    • CNames can only point to other hostnames, & not IP address. eg, (CNAME) -> (A record) -> IPv4 address

Route 53 architecture