AT&T provides voice, data and video telecommunications services, including cellular telephone, cable TV, and internet services, to businesses, consumers and government agencies.

Melbourne IT is fully owned by the University of Melbourne.  Through its subsidiary, Melbourne Enterprises International, it handles tasks including com.au DNS registrations.

UUNet is an MCI WorldCom company.  MCI is a provider of local, long distance and Internet telecommunications services globally to business, government and consumer customers through a vast network of fiber optic cable, digital microwave and satellite stations.

America Online provides interactive services, Web brands, Internet technologies and e-commerce services. AOL operates two worldwide Internet services, America Online and CompuServe, and several Internet brands, including Netscape.

RealNetworks provides branded software products, such as Real Audio, and services enabling the delivery of streaming media content over the Internet and intranets.

VeriSign, Inc, provides Internet-based trust services needed by websites, enterprises and individuals to conduct secure communications and electronic commerce on-line.

Network Solutions is a registrar of Internet domain names within the .com, .org, .net and .edu top-level domains, according to rules established by the Department of Commerce.

Rhythms is a national, facilities based provider of high speed, local data network services. Rhythms networks use digital subscriber line, or DSL, technology to transport data at guaranteed speeds up to 25 times faster than common dial-up modems.

Deluxe is a supplier of paper-based and electronic payment and information solutions services, and  integrated payment protection services to the financial and retail industries.

IDT Corporation is a telecommunications company which offers a broad range of integrated long-distance telephone and Internet access services.

Authorize.Net Corporation develops, markets, and sells Authorize.Net, a line of products and services that provide comprehensive solutions for authorizing, processing, and managing credit card and electronic check transactions over the Internet.

Recreational Software Advisory Council on the Internet is an independent, non-profit organization that empowers the public, especially parents to make informed decisions about what they and their children experience on the internet by means of an objective, content advisory system.