Until 1999, there was no Shared Registration System. Network Solutions (http://www.networksolutions.com) operated the .com, .net, and .org registries, and was the only registrar. In October 1998, NSI's agreement with the US Department of Commerce was amended, requiring the creation of an SRS that supported multiple registrars. The SRS officially opened on November 30, 1999, though there had been several testbed registrars using the system since March 11, 1999.