DNS LINK Record Subtree Redirection for Scalable Provisioning

The patent extracts the subtree redirection functionality from the traditional DNAME and CNAME record mechanisms by introducing a new DNS record type that specifically handles subtree owner redirection. This new record type isolates the redirection logic to only what is necessary, removing the resource-intensive aspects of the existing mechanisms while preserving the core functionality of resolving DNS queries for subtrees.

The patent merges the management of multiple vanity domains by introducing a subtree owner DNS record type that can redirect entire subtrees of domains to a common target. This allows multiple vanity domains to share the same redirection logic and resource records, combining what would otherwise require individual management into a single unified mechanism that maintains domain resolution independence while dramatically improving provisioning scalability.

The patent uses a selective copying approach where the subtree owner DNS record type enables customers to share common resource records while maintaining the ability to have customer-specific records when needed. Instead of creating duplicate records for every customer, the system copies only the necessary redirection logic at the subtree owner level, allowing multiple customers to reference the same underlying resource records, thereby significantly reducing memory consumption while preserving customer dedication where required.