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: 299

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-299 A Annapolis MD BLTMMDCHX7Y  321J HD CARRIER LLC 238      
667-299 0 Annapolis MD BLTMMDCHXQX  197D VONAGE AMERICA LLC 238   2020-06-02   
667-299 1 Annapolis MD BLTMMDCHXQX  197D VONAGE AMERICA LLC 238   2020-06-02   
667-299 2 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-10-26   
667-299 3 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-10-26   
667-299 4 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-10-26   
667-299 5 Annapolis MD BLTMMDCHXMX  506J TWILIO INTERNATIONAL, INC. 238   2020-12-26   
667-299 6 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-12-25   
667-299 7 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-12-25   
667-299 8 Annapolis MD BLTQMD013MD  939H COMMIO, LLC 238   2021-10-06   
667-299 9 Annapolis MD BLTMMDCHX7Y  321J HD CARRIER LLC 238   2020-06-01   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.