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: 549

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-549 A Annapolis MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
667-549 0 Annapolis MD   876D ONVOY, LLC - MD 238   2026-07-24   
667-549 3 Annapolis MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-07-03   
667-549 4 Annapolis MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-07-03   
667-549 5 Annapolis MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-07-03   
667-549 6 Annapolis MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-07-03   
667-549 7 Annapolis MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2026-06-26   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.