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.

NPA: 240 [Rate centres in NPA 240] [Dial plan for NPA 240]

NXX: 326

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-326 A Washington Zone 15 MD HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-326 0 Washington Zone 15 MD HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-326 1 Washington Zone 15 MD HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-326 2 Washington Zone 15 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2024-04-05   
240-326 3 Washington Zone 15 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-10-17   
240-326 4 Washington Zone 15 MD HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      
240-326 5 Washington Zone 15 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-07-12   
240-326 6 Washington Zone 15 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-09-24   
240-326 7 Washington Zone 15 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2021-09-24   
240-326 8 Washington Zone 15 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2021-05-21   
240-326 9 Washington Zone 15 MD HRNDVA13AMD  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 236      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.