The Commission has used FCC Form 477 to collect subscribership information from telephone service providers – the incumbent local exchange carriers (ILECs), competitive local exchange carriers (CLECs), and mobile telephony providers – for more than a decade.  The Commission has required interconnected Voice over Internet Protocol (“interconnected VoIP”) service providers to report subscribership information since December 2008.  This report summarizes information about telephone services as of June 30, 2012.

Date Last Updated or Reviewed: Fri, 06/14/2013