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: DNVRCOMA31Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
720-764 8 Hudson CO 710A ALLO COMMUNICATIONS, LLC - NE 656      
970-503 A Greeley CO 710A ALLO COMMUNICATIONS, LLC - NE 656      
970-503 5 Greeley CO 710A ALLO COMMUNICATIONS, LLC - NE 656      
970-743 A Fort Morgan CO 710A ALLO COMMUNICATIONS, LLC - NE 656      
970-743 3 Fort Morgan CO 710A ALLO COMMUNICATIONS, LLC - NE 656      
970-771 4 Breckenridge CO 710A ALLO COMMUNICATIONS, LLC - NE 656      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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