DNS Zones

• an authoritative name server is responsible for a specific DNS zone
• zones DO NOT overlap

DNS Zones - allow for easier control over multiple levels of a domain

• as the # of resource records in a single domain increases, it becomes more difficult to manage them all
• Network admins can ease this by splitting up their configurations into multiple zones

Zone Files - simple configuration files that declare all resource records for a particular zone

SOA (Start of Authority) - declares the zone and the name of the name server that is authoritative for it

NS (Name Server) Records - indicate other name servers that might also be responsible for this zone

Reverse lookup zone files - these let DNS resolvers ask for an IP and get the FQDN associated with it returned

Pointer Record (PTR) - resolves an IP to a name