Websites Geographic Location

HOW TO KNOW THE  Websites Geographic Location ?

The words (.in, .pk, .uk(which We see at the end of Websites represent Geographic Location (Country) of the Site.

For eg.: www.ebay.in
 
in=India
 
Here are some Formats:
 
au=Australia
 
pk=pakistan
 
fr=France

ca=Canada
 
at=Austria
 
it=Italy
 
jp=Japan