Get age of domain?

Get age of domain?

How to get the age of domain?
1) I can see domain age using wayback machine of archive.org
http://web.archive.org/web/*/google.com
2) Second, I can see domain age using whoise database of Godaddy
http://who.godaddy.com/?prog_id=GoDaddy
Similar question: getting domain age using preg match all
As you can see, they are showing it in browser but I need only age to save
it somewhere in database? Or use it in my script.
The archive.org provides some JSON API but there is no much information
for this API about getting meta data of domain.
http://archive.org/help/json.php
Is it possible to scrap the age information from archive.org wayback
machine page? http://screencast.com/t/s2t4cL03