This is a fundamental problem with preserving Web content, in that the name for the Web resource contains a DNS name. DNS names can vanish, or be re-assigned, at any time on the whim of the domain owner. The owner of the domain name can change at any time. There are three possible approaches to dealing with the problem
- Prevent it happening.
- Distinguish between persistent and evanescent domain names.
- Live with it.
It should be noted that the Internet Archive, LOCKSS and Memento have all taken the approach of living with the problem. They all treat Web content as being named by a URL and a time at which that URL was valid, and provide ways to navigate to it using both the URL and the timestamp. In the end, living with the problem may be less work and more effective than trying to fix it.