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Type: GmbH (limited liability - Germany)
Industry: Domain Registrar
Founded: 1998
Headquarters: Kaiserstraße 172-174
66386 St. Ingbert
Country: Germany
Employees: 51-200

Key-Systems Group is a leading international internet service provider. Key-Systems was founded in 1998 by Alexander Siffrin and received it's accreditation from ICANN as an official registrar in October, 2000. The German company has branch offices in the USA and in Brasil and provides services to its end-customers and resellers through its domain portals: CentralNic Reseller (formerly RRPproxy, BrandShelter and domaindiscount24 [1].

As of Jan, 2014, the Key-Systems/ Moniker Group has over 6 million gTLD & ccTLD domains under its management.[2] The group is currently ranked second among leading registrars for global TLDs in Europe. They currently offer the fully-automated registration of more than 300 top-level and second-level domains and the will add over 700 new TLDs.[3] The Registry Services of KSregistry GmbH is now concentrated in the CentralNic Registry, providing Registry Services to 118 TLDs.

Key-Systems Group is part of KeyDrive SA, which was formed through a merger between Key-Systems and NameDrive in June 2011. In Januuary, 2012, KeyDrive acquired former rivals Moniker and SnapNames from for an undisclosed amount. Following the acquisition, the KeyDrive registrars collectively ranked sixth in the list of the world's largest ICANN-accredited registrars for generic TLDs.[4] Snapnames was sold in 2014 to Since August 2018 Key-Systems is part of the enlarged CentralNic Group. In 2023, CentralNic Group PLC was rebranded to Team Internet Group PLC.

New gTLDs

The company announced that its wholly-owned subsidiary KSregistry had been selected to provide back-end registry services for 3 ccTLDs and 27 gTLDs, including GeoTLDs such as .saarland and .zuerich, generic TLDs like .ski and .bio, and brand TLDs for leading companies from the automotive, finance, tourism, media and health sectors; together with OpenRegistry (member of the KeyDrive Group since January 2017) the Group provides services for another 20 TLDs.

Key-Systems is a limited partner of dotBerlin GmbH since 2006 [1]


  • In October 1998, Alexander Siffrin founded Key-Systems GbR (Gesellschaft bürgerlichen Rechts), a civil law partnership company, in Friedrichsthal/Saarland, Germany.
  • Key-Systems GbR was turned into a limited liability company Key-Systems GmbH (Gesellschaft mit beschränkter Haftung) in 2000. [5]
  • In 2000, Key-Systems launched (DD24), the domain portal for end-customers. On November 10th, 2000, ICANN announced that Key-Systems GmbH d/b/a had qualified to be accredited as a domain name registrar for the .com, .net, and .org domains.[6]
  • In 2001, Key-Systems launched its reseller portal That same year, Key-Systems joined DENIC, an association for the administration of the German ccTLD (.de). Key-Systems also participated in the first meetings addressing the implementation of a domain dotEU TLD for Europe.
  • Key-Systems participated in Verisign's IDN testbed in 2002. At this point, Key-Systems provided more than 60 different domain name extensions.
  • In 2007, Key-Systems took over the former Verisign Namestore Business for leading ccTLDs, migrating the ccTLD domain portfolios to the RRPproxy platform.
  • In May, 2009, Key-Systems founded its US subsidiary in the Washington D.C. metro area, and Bonnie Wittenburg was announced as Executive Vice President for Key-Systems USA, Inc. [7]
  • In July 2009, Key-Systems invested in[DevKey Domain Management Solutions, buying 49% of its share.[8]
  • In 2010, Key-Systems moved to its new own corporate headquarter in St. Ingbert and built its own TIER III datacenter (SkyWay-DataCenter)</ref>
  • In February, 2012 Key-Systems outsourced its registry services division KSregistry into a new subsidiary, KSregistry GmbH[11].

Products and Services

Key-Systems provides services to resellers, companies and end-customer's through its three domain portals:

  • CentralNic Reseller (formerly RRPproxy: for domain-resellers of both gTLD and ccTLD domain names, CenntralNic Reseller provides registration of domains through a WebInterface, Direct-Socket-Access, Email-Template, or API.
  • BrandShelter: helps to manage and monitor huge domain portfolios, and includes support in planning, executing and operating a TLD including registry services by KSregistry.
  • domaindiscount24 (dd24): domain registration portal, including web and mailspace offers available in five different languages, targeted at retail customers.


Key-Systems received the Deloitte Technology Fast 50 Award in 2008, 2009, 2010 and 2011. [12] [13]