Numbering Resource Utilization in the United States, NRUF data as of June 30, 2007, Porting and Toll-Free data as of December 31, 2007

  • Full Title:
    Numbering Resource Utilization in the United States, NRUF data as of June 30, 2007, Porting and Toll-Free data as of December 31, 2007
  • Document Type:
    Report
  • Bureau(s):
    Wireline Competition
  • Description
    Released March 2008

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