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: 628

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-628 A Mechanicsville MD CHCHMDBEPS0  2593 CORE COMMUNICATIONS, INC.- MD 236   2024-01-16   
240-628 0 Mechanicsville MD   2593 CORE COMMUNICATIONS, INC.- MD 236      
240-628 1 Mechanicsville MD   2593 CORE COMMUNICATIONS, INC.- MD 236      
240-628 2 Mechanicsville MD   2593 CORE COMMUNICATIONS, INC.- MD 236      
240-628 3 Mechanicsville MD WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-628 4 Mechanicsville MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-628 5 Mechanicsville MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-628 6 Mechanicsville MD VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-628 7 Mechanicsville MD VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-628 8 Mechanicsville MD VINNVACBDS0  876D ONVOY, LLC - MD 236      
240-628 9 Mechanicsville MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.