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
240-302 A Laurel MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
240-302 0 Laurel MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 236   2017-02-04   
240-302 1 Laurel MD   5562 METRO PCS, INC. 236   2017-03-16   
240-302 2 Laurel MD   964H BARR TELL USA, INC. 236   2016-11-30   
240-302 3 Laurel MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2017-03-20   
240-302 4 Laurel MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2016-11-28   
240-302 5 Laurel MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2016-11-28   
240-302 6 Laurel MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2016-11-28   
240-302 7 Laurel MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2016-11-28   
240-302 8 Laurel MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2016-11-28   
240-302 9 Laurel MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2016-11-28   

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.