A server computer includes a network communications interface, a memory configured to store a web page having an IP address, and a processor. The processor is configured to receive, via the network communications interface, a request for the web page. The request includes the IP address. The processor is also configured to identify a set of domain names referenced by the web page; resolve the set of domain names into a set of IP addresses; and transmit, in response to the request for the web page and via the network communications interface, a content and format of the web page. The content of the web page includes the set of IP addresses.