A domain management system that manages domain names, network addresses, and other aspects of a computing network domain is provided. The domain management system obtains domain data, such as domain name system (“DNS”) records, from any number of network-accessible providers of the domain data, such as DNS servers. The domain management system can store, transform, and synchronize the domain data among the network-accessible providers, even if the network-accessible providers do not all use or recognize the same format and/or content of domain data.