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
240-294 A Laurel MD WASHDCCZDS0  4773 XO MARYLAND, LLC 236      
240-294 0 Laurel MD   4773 XO MARYLAND, LLC 236      
240-294 1 Laurel MD   4716 PAETEC COMMUNICATIONS, INC. - MD 236   2005-10-17   
240-294 2 Laurel MD   9212 VERIZON MARYLAND, INC. 236   2002-08-21   
240-294 3 Laurel MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2007-07-30   
240-294 4 Laurel MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236   2008-06-11   
240-294 5 Laurel MD   4716 PAETEC COMMUNICATIONS, INC. - MD 236   2007-05-21   
240-294 6 Laurel MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236   2007-09-20   
240-294 7 Laurel MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236   2007-09-20   
240-294 8 Laurel MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 236   2015-09-15   
240-294 9 Laurel MD   4773 XO MARYLAND, LLC 236      

Last updated: Sat, 11 Jul 2020 20:37:26 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.