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Classless Subnet Delegation

Classless subnets are delegated in the reverse zone of the parent that is delegating. The key tools for the delegation are PTR records, NS records and CNAME records. The NS records declares the existence of the subnet’s domain name servers. The PTR records attach canonical names to reverse lookup addresses. CNAME records can be used to create aliases for simplification.

Previous Web Hosting Term: Class A Subnet

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