ICANN was formed in 1998. It is a not-for-profit public-benefit corporation with participants from all over the world dedicated to keeping the Internet secure, stable and interoperable. It promotes competition and develops policy on the Internet's unique identifiers.
ICANN doesn't control content on the Internet. It cannot stop spam and it doesn't deal with access to the Internet, but through its coordination role of the Internet's naming system, it does have an important impact on the expansion and evolution of the Internet.
Verisign - .com, .net, .tv and .cchttp://www.verisign.com/
As the operator of the authoritative domain name registry for .com and .net, Verisign offers some of the most popular top-level domains (TLDs). Learn about the benefits to your business of registering some of the most recognised and targeted top-level domains (TLDs) in the world.
Nominet - .ukhttp://www.nominet.uk/
Nominet is the Internet registry for .uk domain names such as .co.uk, .org.uk, .me.uk, .ltd.uk and .plc.uk
Nominet operate at the heart of e-commerce in the UK, running one of the world's largest internet registries and managing over nine million domain names.
Nominet maintain the register of .uk domain names. They run the technology which locates a computer on the Internet hosting the web site or email system you're looking for when you type in a web address or send an email to an address that ends in .uk.
Afilias - .infohttp://www.afilias.info/
Afilias is a global leader in advanced registry services and provides a wide range of capabilities essential to the smooth and efficient operation of a domain registry.
Afilias launched its registry services in July 2001 with the launch of the top-level domain registry for .Info - the most successful of the seven new top-level domains (TLDs) selected by the Internet Corporation for Assigned Names and Numbers (ICANN). Today, Afilias provides registry services for .info, .org, .mobi (for the mobile Internet), .aero (for the aerospace industry), .asia (for the Asia Pacific region) and several country code TLDs (ccTLDs). Afilias supports over 18 million domain names across 15 top-level domains.
.me - Country-code top-level domain for Montenegrohttp://domain.me/
Understanding that “ME” has multiple meanings and has mass appeal as a word, the government of Montenegro embarked on generalizing the .ME name space so that anyone and everyone could enjoy obtaining a .ME for themselves. As a result, in November of 2007, a formal public RFP was issued to find a Registration Agent who could provide a world-class registry platform, run operations for an international registry, and deliver marketing expertise to make .ME a worldwide success. The contract was eventually awarded to doMEn, d.o.o., a Montenegrin joint venture (doing business as .ME Registry), whose partners include Afilias Limited, GoDaddy.com, Inc., and ME-net d.o.o.
CentralNic was established in 1995 as an independent global domain name registry committed to making it easier for Internet users to establish new and distinctive domain names with regional and country-specific identities.
CentralNic currently has a portfolio of more than 20 domain names available to users worldwide, including eu.com (Europe), uk.com (United Kingdom), us.com, (United States), cn.com (China) and ru.com (Russia).
CentralNic uses the .com, .net and .org standard domain name structure to offer additional regional and country-specific domain names, ensuring a secure, inexpensive solution for creating easily identifiable Internet addresses worldwide. CentralNic's registry service is particularly useful for Internet users in countries where domain names are difficult to obtain due to restrictive domain regulations.
PIR - .orghttp://pir.org/
Simply, .org is the domain of choice for companies, organizations, and individuals - all of whom share the belief that channelling passion toward a shared purpose is the foundation of success. People turn to .org to mobilise their communities, achieve a common goal, or pursue a shared cause. Why? Because .org provides the address online to inspire collaboration, educate communities, and express opinions. Moreover, .org also conveys trust.
ICM registry - .xxx, .sex, .porn, .adulthttp://www.icmregistry.com
The ICM Registry, headquartered in Florida, is the registry operator for the .XXX sponsored top-level domain as approved by ICANN in 2011. ICM provides the management and supporting infrastructure for this extension offered via registrars thought the world.
Neustar - .biz and .ushttps://www.neustar.biz
Competition in the domain industry is fierce. Business operations are increasingly more complex. Neustar is an industry leader that has a proven track record of operational performance, technological excellence, product innovation, and stellar customer support.
Neustar provides registry services for .biz, .us, kids.us, .co, .cn, .tw, .travel, .tel, and 4U.com. In addition, Neustar operates the global registry for i-names, the simple, safe, secure openid.