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.

Switch: CLMAMDORGT0

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
667-433 8 Catonsville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-07-06   
667-433 9 Catonsville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-07-06   
667-434 0 Baltimore MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-06-23   
667-434 1 Baltimore MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-06-23   
667-434 2 Baltimore MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-06-23   
667-434 3 Baltimore MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-06-23   
667-434 4 Baltimore MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-06-23   
667-434 5 Baltimore MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-06-23   
667-434 6 Baltimore MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-06-23   
667-435 9 Baltimore MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-08-06   
667-437 0 Baltimore MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
667-437 1 Baltimore MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
667-437 2 Baltimore MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
667-437 3 Baltimore MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
667-437 4 Baltimore MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
667-438 A Catonsville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
667-438 0 Catonsville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
667-438 1 Catonsville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
667-438 2 Catonsville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
667-438 3 Catonsville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
667-438 4 Catonsville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
667-438 5 Catonsville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
667-438 6 Catonsville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
667-438 7 Catonsville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
667-438 8 Catonsville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
667-438 9 Catonsville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
667-439 0 Pikesville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-11-04   
667-439 4 Pikesville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-12-08   
667-439 5 Pikesville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-12-08   
667-439 6 Pikesville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-12-08   
667-439 7 Pikesville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-12-08   
667-440 5 Baltimore MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-11-26   
667-440 6 Baltimore MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-11-26   
667-440 7 Baltimore MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-11-26   
667-440 8 Baltimore MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-11-26   
667-440 9 Baltimore MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-11-26   
667-441 A Parkville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
667-441 4 Parkville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-08-29   
667-441 5 Parkville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-06-01   
667-441 9 Parkville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-09   
667-442 A Essex MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
667-442 6 Essex MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-01-26   
667-442 7 Essex MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-07-29   
667-442 9 Essex MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-16   
667-445 0 Catonsville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-26   
667-445 1 Catonsville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-26   
667-445 2 Catonsville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-26   
667-445 3 Catonsville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-26   
667-445 4 Catonsville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-26   
667-445 5 Catonsville MD 4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-26   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 >>

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.