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: GDJTCOMAKMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
970-394 A Dolores CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656      
970-398 A Pagosa Springs CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656      
970-551 A Marvel CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656      
970-553 A Ignacio CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656      
970-739 A Cortez CO 6010 NEW CINGULAR WIRELESS PCS, LLC 656      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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