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: BLTMMDCH42Z

<< 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 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
667-755 4 Pikesville MD 876D ONVOY, LLC - MD 238   2022-10-16   
667-758 2 Silver Run MD 876D ONVOY, LLC - MD 238   2021-07-12   
667-758 3 Silver Run MD 876D ONVOY, LLC - MD 238   2021-07-12   
667-758 8 Silver Run MD 876D ONVOY, LLC - MD 238   2021-03-04   
667-770 6 Baltimore MD 876D ONVOY, LLC - MD 238   2019-06-13   
667-770 7 Baltimore MD 876D ONVOY, LLC - MD 238   2019-06-13   
667-772 1 Sparks-Glencoe MD 876D ONVOY, LLC - MD 238   2022-10-16   
667-772 2 Sparks-Glencoe MD 876D ONVOY, LLC - MD 238   2021-07-12   
667-772 3 Sparks-Glencoe MD 876D ONVOY, LLC - MD 238   2021-07-12   
667-772 6 Sparks-Glencoe MD 876D ONVOY, LLC - MD 238   2022-02-05   
667-772 8 Sparks-Glencoe MD 876D ONVOY, LLC - MD 238   2022-02-05   
667-777 0 Severna Park MD 876D ONVOY, LLC - MD 238   2016-03-10   
667-777 1 Severna Park MD 876D ONVOY, LLC - MD 238   2016-03-10   
667-777 8 Severna Park MD 876D ONVOY, LLC - MD 238   2016-05-01   
667-778 1 Sparrows Point MD 876D ONVOY, LLC - MD 238   2023-10-22   
667-778 2 Sparrows Point MD 876D ONVOY, LLC - MD 238   2021-07-12   
667-778 3 Sparrows Point MD 876D ONVOY, LLC - MD 238   2021-07-12   
667-778 4 Sparrows Point MD 876D ONVOY, LLC - MD 238   2022-10-16   
667-788 2 Westminster MD 876D ONVOY, LLC - MD 238   2021-12-19   
667-802 1 Catonsville MD 876D ONVOY, LLC - MD 238   2016-01-21   
667-802 2 Catonsville MD 876D ONVOY, LLC - MD 238   2016-03-03   
667-802 4 Catonsville MD 876D ONVOY, LLC - MD 238   2016-03-03   
667-803 1 Solomons MD 876D ONVOY, LLC - MD 238   2016-04-04   
667-803 2 Solomons MD 876D ONVOY, LLC - MD 238   2016-04-04   
667-803 3 Solomons MD 876D ONVOY, LLC - MD 238   2016-03-09   
667-824 2 Edgewood MD 876D ONVOY, LLC - MD 238   2023-08-10   
667-824 4 Edgewood MD 876D ONVOY, LLC - MD 238   2023-08-10   
667-824 5 Edgewood MD 876D ONVOY, LLC - MD 238   2023-08-10   
667-824 6 Edgewood MD 876D ONVOY, LLC - MD 238   2023-08-10   
667-824 7 Edgewood MD 876D ONVOY, LLC - MD 238   2023-08-10   
667-824 8 Edgewood MD 876D ONVOY, LLC - MD 238   2023-08-10   
667-824 9 Edgewood MD 876D ONVOY, LLC - MD 238   2023-08-10   
667-832 5 Brooklyn Park-Linthicum MD 876D ONVOY, LLC - MD 238   2024-04-19   
667-832 6 Brooklyn Park-Linthicum MD 876D ONVOY, LLC - MD 238   2025-03-02   
667-832 7 Brooklyn Park-Linthicum MD 876D ONVOY, LLC - MD 238   2022-04-26   
667-832 8 Brooklyn Park-Linthicum MD 876D ONVOY, LLC - MD 238   2022-04-26   
667-842 2 Woodlawn MD 876D ONVOY, LLC - MD 238   2025-01-09   
667-846 0 Cockeysville MD 876D ONVOY, LLC - MD 238   2023-08-10   
667-846 1 Cockeysville MD 876D ONVOY, LLC - MD 238   2023-08-10   
667-846 2 Cockeysville MD 876D ONVOY, LLC - MD 238   2022-04-26   
667-846 3 Cockeysville MD 876D ONVOY, LLC - MD 238   2023-08-10   
667-846 4 Cockeysville MD 876D ONVOY, LLC - MD 238   2023-08-10   
667-846 5 Cockeysville MD 876D ONVOY, LLC - MD 238   2023-08-10   
667-846 9 Cockeysville MD 876D ONVOY, LLC - MD 238   2024-04-19   
667-848 4 Aberdeen MD 876D ONVOY, LLC - MD 236   2021-07-11   
667-848 5 Aberdeen MD 876D ONVOY, LLC - MD 236   2021-07-11   
667-848 6 Aberdeen MD 876D ONVOY, LLC - MD 236   2022-02-13   
667-848 7 Aberdeen MD 876D ONVOY, LLC - MD 236   2022-02-13   
667-856 2 Dundalk MD 876D ONVOY, LLC - MD 238   2023-08-10   
667-856 3 Dundalk MD 876D ONVOY, LLC - MD 238   2023-08-10   

<< 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 >>

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.