Back in the day, the US government footed the bill for maintaining the small but expontially growing Internet. They did this by contracting with the University of California, Los Angeles to do the actual maintenance. It was at this point that by the hands (brains?) of then UCLA graduate student Jon Postel invented the Domain Name System (up till the moment he devised the DNS, Postel kept track of which IP addresses led to which computers on a few pieces of loose-leaf paper!).
With the new DNS in place, the National Science Foundation (the US government entity that contracted to UCLA) sought to rid itself of the growing function ($$) of maintaining the DNS. They reasoned that a for-profit enity could better care for the costs of maintaing the DNS, so they sent out proposal requests. The winning bid came from a then small start-up headed by a former ARPANET(I think?) contractor. This small start-up was . . .Network Solutions!
Actually, Network Solutions was already doing the work for the NSF but when the time came to privatize the maintenace of the DNS NetSol was in a good position to win over others. The time came when the US under Clinton charged the Department of Commerce with the mission to fully commercialise the DNS.
This
mission resulted in the forming of The Internet Corporation for Assigned Names and Numbers (ICANN).
So, let's cut this story short. NetSol (VeriSign) and other various ICANN sanctioned DNS registries are granted contracts by ICANN to run their respective TLD root servers. In turn, ICANN does recieve certain administrative fees while other fees collected per every name registered goes to the maintenance of a registries' respective DNS root server; what ever is left over is profit for the respective registries.
My, I didn't mean for this to take so long but the story is much longer than this.
One of the most fascinating aspects to this whole mess of a story is how Jon Postel as a lone grad student at UCLA was at the very root (hehe) of it all. At one point in the history of the DNS there was this one man with a
pencil and paper . . .