The source of those domains is the most_active_feed.xml.zip from the GoDaddy Auctions FTP.
The information on GoDaddy Auctions change rapidly, but the source file on there FTP Server is only updated once a day. Please check the GoDaddy Website for the latest information, because they could already have changed.
01:00 AM - 02:00 AM *
Important! All information get collected when a domain is added to the list. They can be old or wrong
and everyone should check them before registering/buying a domain!
I can not guarantee that the data is up to date.