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: 410 [Rate centres in NPA 410] [Dial plan for NPA 410]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-870 A Parkville MD WHMRMDATPS0  107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2005-04-03   
410-870 0 Parkville MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2005-04-16   
410-870 1 Parkville MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2006-06-19   
410-870 2 Parkville MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2006-06-19   
410-870 3 Parkville MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2009-03-27   
410-870 4 Parkville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-09-18   
410-870 5 Parkville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-10-14   
410-870 6 Parkville MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2009-03-27   
410-870 7 Parkville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2012-04-29   
410-870 8 Parkville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2012-06-11   
410-870 9 Parkville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2012-10-12   

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.