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 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
443-720 7 Aberdeen MD 876D ONVOY, LLC - MD 236   2014-08-30   
443-726 1 Baltimore MD 876D ONVOY, LLC - MD 238   2024-04-12   
443-726 4 Baltimore MD 876D ONVOY, LLC - MD 238   2024-05-11   
443-726 9 Baltimore MD 876D ONVOY, LLC - MD 238   2024-05-11   
443-730 5 Essex MD 876D ONVOY, LLC - MD 238   2016-01-14   
443-730 7 Essex MD 876D ONVOY, LLC - MD 238   2016-03-27   
443-731 0 Port Deposit MD 876D ONVOY, LLC - MD 238   2024-03-03   
443-731 5 Port Deposit MD 876D ONVOY, LLC - MD 238   2018-06-16   
443-732 3 Silver Run MD 876D ONVOY, LLC - MD 238   2012-10-08   
443-733 4 Waterloo MD 876D ONVOY, LLC - MD 238   2016-04-28   
443-733 6 Waterloo MD 876D ONVOY, LLC - MD 238   2016-04-28   
443-734 1 Severn MD 876D ONVOY, LLC - MD 238   2014-09-06   
443-734 3 Severn MD 876D ONVOY, LLC - MD 238   2016-01-22   
443-737 6 Waterloo MD 876D ONVOY, LLC - MD 238   2016-03-21   
443-737 7 Waterloo MD 876D ONVOY, LLC - MD 238   2016-03-21   
443-747 7 Port Deposit MD 876D ONVOY, LLC - MD 238   2012-10-08   
443-748 1 Millersville MD 876D ONVOY, LLC - MD 238   2021-04-02   
443-748 9 Millersville MD 876D ONVOY, LLC - MD 238   2022-11-23   
443-764 8 Glen Burnie MD 876D ONVOY, LLC - MD 238   2012-10-07   
443-767 1 Worthington MD 876D ONVOY, LLC - MD 238   2020-06-11   
443-767 3 Worthington MD 876D ONVOY, LLC - MD 238   2020-06-11   
443-767 4 Worthington MD 876D ONVOY, LLC - MD 238   2012-10-08   
443-770 6 Armiger-Gibson Island MD 876D ONVOY, LLC - MD 238   2014-09-05   
443-775 2 Annapolis MD 876D ONVOY, LLC - MD 238   2014-12-31   
443-775 3 Annapolis MD 876D ONVOY, LLC - MD 238   2014-12-31   
443-775 7 Annapolis MD 876D ONVOY, LLC - MD 238   2016-02-22   
443-776 2 Elkridge MD 876D ONVOY, LLC - MD 238   2014-09-27   
443-776 4 Elkridge MD 876D ONVOY, LLC - MD 238   2014-09-27   
443-781 A Armiger-Gibson Island MD 876D ONVOY, LLC - MD 238   2024-03-05   
443-781 5 Armiger-Gibson Island MD 876D ONVOY, LLC - MD 238   2021-03-04   
443-781 6 Armiger-Gibson Island MD 876D ONVOY, LLC - MD 238   2021-03-04   
443-781 8 Armiger-Gibson Island MD 876D ONVOY, LLC - MD 238   2019-02-19   
443-781 9 Armiger-Gibson Island MD 876D ONVOY, LLC - MD 238   2019-02-19   
443-782 3 Annapolis MD 876D ONVOY, LLC - MD 238   2017-06-02   
443-782 4 Annapolis MD 876D ONVOY, LLC - MD 238   2018-05-27   
443-785 A Arbutus MD 876D ONVOY, LLC - MD 238      
443-787 3 Bel Air MD 876D ONVOY, LLC - MD 238   2014-09-05   
443-792 0 Brooklyn Park-Linthicum MD 876D ONVOY, LLC - MD 238   2014-10-07   
443-792 8 Brooklyn Park-Linthicum MD 876D ONVOY, LLC - MD 238   2014-10-07   
443-806 7 Baltimore MD 876D ONVOY, LLC - MD 238   2024-06-23   
443-806 8 Baltimore MD 876D ONVOY, LLC - MD 238   2024-06-23   
443-806 9 Baltimore MD 876D ONVOY, LLC - MD 238   2024-06-23   
443-815 4 Essex MD 876D ONVOY, LLC - MD 238   2014-11-01   
443-815 7 Essex MD 876D ONVOY, LLC - MD 238   2014-11-01   
443-819 1 Bel Air MD 876D ONVOY, LLC - MD 238   2015-07-30   
443-819 2 Bel Air MD 876D ONVOY, LLC - MD 238   2015-07-30   
443-830 3 Catonsville MD 876D ONVOY, LLC - MD 238   2021-09-23   
443-830 5 Catonsville MD 876D ONVOY, LLC - MD 238   2021-07-11   
443-830 6 Catonsville MD 876D ONVOY, LLC - MD 238   2021-07-11   
443-836 4 Baltimore MD 876D ONVOY, LLC - MD 238   2018-12-13   
443-836 5 Baltimore MD 876D ONVOY, LLC - MD 238   2020-02-13   
443-843 0 Havre de Grace MD 876D ONVOY, LLC - MD 238   2012-10-07   
443-853 8 Baltimore MD 876D ONVOY, LLC - MD 238   2018-12-13   
443-853 9 Baltimore MD 876D ONVOY, LLC - MD 238   2018-12-13   
443-863 2 Baltimore MD 876D ONVOY, LLC - MD 238   2010-10-20   
443-863 3 Baltimore MD 876D ONVOY, LLC - MD 238   2010-10-20   
443-868 2 Essex MD 876D ONVOY, LLC - MD 238   2014-09-01   
443-870 4 Pikesville MD 876D ONVOY, LLC - MD 238   2014-12-31   
443-870 5 Pikesville MD 876D ONVOY, LLC - MD 238   2014-12-31   
443-873 A Baltimore MD 876D ONVOY, LLC - MD 238      
443-873 2 Baltimore MD 876D ONVOY, LLC - MD 238   2010-04-16   
443-879 2 Dundalk MD 876D ONVOY, LLC - MD 238   2014-09-05   
443-879 7 Dundalk MD 876D ONVOY, LLC - MD 238   2014-12-31   
443-879 8 Dundalk MD 876D ONVOY, LLC - MD 238   2014-12-31   
443-892 7 New Windsor MD 876D ONVOY, LLC - MD 238   2012-10-07   
443-898 4 Pikesville MD 876D ONVOY, LLC - MD 238   2014-09-06   
443-899 1 Waterloo MD 876D ONVOY, LLC - MD 238   2021-05-21   
443-899 3 Waterloo MD 876D ONVOY, LLC - MD 238   2021-07-12   
443-901 3 Towson MD 876D ONVOY, LLC - MD 238   2020-08-09   
443-901 4 Towson MD 876D ONVOY, LLC - MD 238   2020-08-09   
443-901 5 Towson MD 876D ONVOY, LLC - MD 238   2020-08-09   
443-903 2 Bel Air MD 876D ONVOY, LLC - MD 238   2012-10-07   
443-903 3 Bel Air MD 876D ONVOY, LLC - MD 238   2016-01-18   
443-909 1 Baltimore MD 876D ONVOY, LLC - MD 238   2024-07-12   
443-909 2 Baltimore MD 876D ONVOY, LLC - MD 238   2024-07-12   
443-909 3 Baltimore MD 876D ONVOY, LLC - MD 238   2024-07-12   
443-909 4 Baltimore MD 876D ONVOY, LLC - MD 238   2024-07-12   
443-909 5 Baltimore MD 876D ONVOY, LLC - MD 238   2024-07-12   
443-912 5 Towson MD 876D ONVOY, LLC - MD 238   2015-07-29   
443-917 A Columbia MD 876D ONVOY, LLC - MD 238      
443-917 3 Columbia MD 876D ONVOY, LLC - MD 238   2012-02-29   
443-920 7 Sykesville MD 876D ONVOY, LLC - MD 238   2016-03-25   
443-920 8 Sykesville MD 876D ONVOY, LLC - MD 238   2016-03-25   
443-933 8 Cockeysville MD 876D ONVOY, LLC - MD 238   2014-12-31   
443-933 9 Cockeysville MD 876D ONVOY, LLC - MD 238   2014-12-31   
443-937 2 Union Bridge MD 876D ONVOY, LLC - MD 238   2012-10-08   
443-940 5 Pikesville MD 876D ONVOY, LLC - MD 238   2021-09-23   
443-940 6 Pikesville MD 876D ONVOY, LLC - MD 238   2021-09-23   
443-941 0 Elkton MD 876D ONVOY, LLC - MD 238   2012-10-07   
443-947 3 Perryville MD 876D ONVOY, LLC - MD 238   2016-08-05   
443-947 4 Perryville MD 876D ONVOY, LLC - MD 238   2016-08-05   
443-951 3 Annapolis MD 876D ONVOY, LLC - MD 238   2014-10-25   
443-952 2 Westminster MD 876D ONVOY, LLC - MD 238   2016-03-10   
443-952 4 Westminster MD 876D ONVOY, LLC - MD 238   2015-10-05   
443-952 6 Westminster MD 876D ONVOY, LLC - MD 238   2014-09-05   
443-957 0 Baltimore MD 876D ONVOY, LLC - MD 238   2025-01-06   
443-957 3 Baltimore MD 876D ONVOY, LLC - MD 238   2025-01-06   
443-960 7 Glen Burnie MD 876D ONVOY, LLC - MD 238   2014-12-31   
443-960 8 Glen Burnie MD 876D ONVOY, LLC - MD 238   2014-12-31   
443-963 3 Baltimore MD 876D ONVOY, LLC - MD 238   2012-05-19   

<< 1 2 3 4 5 6 7 8 9 10 11 12 >>

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.