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: 667 [Rate centres in NPA 667] [Dial plan for NPA 667]

NXX: 263

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-263 A Dundalk MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
667-263 0 Dundalk MD BLTQMD013MD  939H COMMIO, LLC 238   2021-10-11   
667-263 1 Dundalk MD BLTQMD013MD  939H COMMIO, LLC 238   2021-10-11   
667-263 2 Dundalk MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2025-01-04   
667-263 3 Dundalk MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-07-11   
667-263 4 Dundalk MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-07-11   
667-263 5 Dundalk MD BLTQMD013MD  939H COMMIO, LLC 238   2021-10-11   
667-263 6 Dundalk MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2022-10-16   
667-263 7 Dundalk MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-05-22   
667-263 8 Dundalk MD BLTQMD013MD  939H COMMIO, LLC 238   2021-10-11   
667-263 9 Dundalk MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-04-23   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.