I want to develop a site for instant domain availability search(.com and .net only). For that I need list of all the registered domain. I searched on google and came to know about VegiSign's TLD Zone File Access Program( http://www.verisigninc.com/en_US/products-and-services/domain-name-services/grow-your-domain-name-business/tld-zone-access/index.xhtml?loc=en_US).
But it requires me to fill some forms and the process will take upto 4-8 weeks.
Is there any other way I can get access of all registered domains(including commercial services).