US Patent 7814229 Constraint-based domain name system

Systems and methods for providing dynamic DNS host services in regard to resolving a text-descriptive resource names of a network request into network addresses is presented. A network request corresponding to a network resource on the computer network is obtained. The network request comprises a text-descriptive resource name corresponding to the network resource. Resource criteria are also obtained. The resource criteria direct how to resolve the resource name of the network resource to a network address. A network address corresponding to the resource name is then selected according to the obtained resource criteria. Thereafter, the selected network address is returned in response to the network request.