Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: HSTOTX46DS0

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
979-871 3 Freeport TX 7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560   2008-10-08   
979-900 3 Angleton TX 7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560   2012-03-01   
979-943 5 Bay City TX 7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560   2008-09-05   

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Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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