You can find out the Updated Date, Creation (Registration) Date, Expiration Date and other interesting pieces of registry information about a website via the WHOIS protocol.
Here's an example Node.js snippet showing you how.
Cloneable code: https://github.com/ZeroProjectsInc/snippets/tree/master/whois
- Courtesy of Zero Projects, a software development firm in Toronto, Canada. You can see more about us at https://zeroprojects.ca