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
240-210 A Waldorf MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-210 0 Waldorf MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-210 1 Waldorf MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-210 2 Waldorf MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-210 3 Waldorf MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-210 4 Waldorf MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-210 5 Waldorf MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-210 6 Waldorf MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-210 8 Waldorf MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236   2007-07-27   
240-210 9 Waldorf MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-04-29   

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.