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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-599 A Washington Zone 10 MD WASHDCRKDS2  8864 BROADWING COMMUNICATIONS. LLC - MD 236      
240-599 0 Washington Zone 10 MD   8864 BROADWING COMMUNICATIONS. LLC - MD 236      
240-599 1 Washington Zone 10 MD   8864 BROADWING COMMUNICATIONS. LLC - MD 236      
240-599 2 Washington Zone 10 MD   8864 BROADWING COMMUNICATIONS. LLC - MD 236      
240-599 3 Washington Zone 10 MD   8864 BROADWING COMMUNICATIONS. LLC - MD 236      
240-599 4 Washington Zone 10 MD   8864 BROADWING COMMUNICATIONS. LLC - MD 236      
240-599 5 Washington Zone 10 MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2014-05-30   
240-599 6 Washington Zone 10 MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2005-06-02   
240-599 7 Washington Zone 10 MD   8864 BROADWING COMMUNICATIONS. LLC - MD 236      
240-599 8 Washington Zone 10 MD   8864 BROADWING COMMUNICATIONS. LLC - MD 236      
240-599 9 Washington Zone 10 MD   8864 BROADWING COMMUNICATIONS. LLC - MD 236      

Last updated: Sat, 14 Sep 2019 01:44:23 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.