1. A method comprising: at a local Domain Name Service (DNS) server, providing a first DNS query for a first domain name to a network for provision to a domain-name dependency server (DDS); in response to providing the first DNS query to the network, receiving from the DDS a first set of domain names related to the first domain name and storing the first set of domain names at a cache of the local DNS server; and generating a set of DNS queries at the local DNS server to identify addresses for the first set of domain names.