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: 523

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
240-523 A La Plata MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-523 0 La Plata MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-523 1 La Plata MD TYCRVA03AMD  2589 US LEC OF MARYLAND, INC. 236      
240-523 2 La Plata MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-523 3 La Plata MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-523 4 La Plata MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-523 5 La Plata MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-523 7 La Plata MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-523 8 La Plata MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-523 9 La Plata MD WASKDCFNPS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.