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: WRRNOHXAVMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
234-290 A Windham OH 464C ONVOY, LLC - OH 322      
234-306 A Hartford (Trumbull) OH 464C ONVOY, LLC - OH 322      
234-373 A Damascus OH 464C ONVOY, LLC - OH 322      
234-424 A Warren OH 464C ONVOY, LLC - OH 322   2024-07-05   
234-540 A Kinsman OH 464C ONVOY, LLC - OH 322      
330-443 A Hartford (Trumbull) OH 464C ONVOY, LLC - OH 322      
440-807 A New Lyme OH 464C ONVOY, LLC - OH 322      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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