The very first domain name ever registered was symbolics.com which was registered on 15th March 1985. It makes it as the very first domain registered on the Internet. The domain name was registered by the Symbolics Computer Corporation, out of Cambridge, MA. This domain name was again purchased back in 2009 by a small group of investors from the Symbolics Computer Corporation. The wiki for symbolics states that it is the first .com domain ever registered.