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: 512

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-512 A Pikesville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-07-12   
667-512 0 Pikesville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-07-12   
667-512 1 Pikesville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-07-12   
667-512 2 Pikesville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-07-12   
667-512 3 Pikesville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-07-12   
667-512 4 Pikesville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-07-12   
667-512 5 Pikesville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-07-12   
667-512 6 Pikesville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-07-12   
667-512 7 Pikesville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-07-12   
667-512 8 Pikesville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-07-12   
667-512 9 Pikesville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-07-12   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.