DNS RESOLUTION REPLAY FOR BARE DOMAIN NAMES THAT MAP TO "A" RECORDS

摘要

The technology disclosed relates to DNS resolution of bare domain names of the form “myexample.com”. A bare domain name is also called zone apex or naked domain. In particular, bare domains are resolved by look-up of “A” records, per the IETF standards for DNS resolution. Technology is disclosed that improves resolution of bare domains to edge servers or other devices of a content delivery network or cloud-based content provider (collectively referred to as CDNs).

主权项

1. A method of resolving a DNS request that includes a bare domain name and returning at least one IP address of a content delivery network (CDN) edge server or other device, the method including:
receiving a bare domain DNS request for a first domain from a resolver at a registered authoritative DNS server; determining a request location associated with the bare domain DNS request; determining at least one target-content CDN for the bare domain DNS request; obtaining from an access history monitor, IP addresses returned by the target CDN in response to qualified DNS requests for subdomains of the first domain; and returning one or more IP addresses of the target-content CDN responsive to the bare domain DNS request for the first domain.