It has become very difficult to obtain registrar data for domains registered at GoDaddy because most of the important information is hidden if you do more than a few port 43 whois lookups using whois.godaddy.com.
We have released a simple API based script for obtaining the data for your own domains registered at GoDaddy. You can use this along with any of our domain management software tools.
Please Note: This will work only for your own domains registered at GoDaddy. You can’t use it to find data for domains that belong to other people.
Please see knowledge base article: GoDaddy Whois API