Arcor was the former name of the fixed phone line and Internet business of Vodafone D2 GmbH, a German subsidiary of telecommunications company Vodafone. It was the second-largest provider of fixed phone lines in Germany, after Deutsche Telekom. The name was changed on 1 August 2009 following Vodafone's acquisition of the company. Its headquarters were in Eschborn, near Frankfurt. It was one of the few telecommunications companies in Germany to operate an ISDN network independent of the incumbent provider, Deutsche Telekom.
In 2008, Vodafone Germany had 2.1 million ADSL customers and 1.1 million ISDN customers. Arcor was the first German telecommunications provider to offer a flat rate tariff for ISDN phone lines.
History
Mannesmann Arcor AG & Co. KG was formed in 1996 as a joint venture between Mannesmann, Deutsche Bank and DBKom, a subsidiary of Deutsche Bahn, the national railway operator. After Mannesmann was acquired by Vodafone