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: ANMSIACORS4

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
319-462 A Anamosa IA 9631 QWEST CORPORATION 635      
319-462 2 Anamosa IA 9631 QWEST CORPORATION 635      
319-462 3 Anamosa IA 9631 QWEST CORPORATION 635      
319-462 4 Anamosa IA 9631 QWEST CORPORATION 635      
319-462 5 Anamosa IA 9631 QWEST CORPORATION 635      
319-462 6 Anamosa IA 9631 QWEST CORPORATION 635      
319-481 6 Anamosa IA 9631 QWEST CORPORATION 635   2009-07-30   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.