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: VINNVACBDS0

<< 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 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
301-701 2 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2020-12-03   
301-701 3 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2020-12-03   
301-701 4 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2020-12-03   
301-701 5 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2020-12-03   
301-719 2 Washington Zone 16 MD 876D ONVOY, LLC - MD 236   2020-04-30   
301-719 3 Washington Zone 16 MD 876D ONVOY, LLC - MD 236   2020-04-30   
301-743 0 Indian Head MD 876D ONVOY, LLC - MD 236   2025-01-06   
301-743 1 Indian Head MD 876D ONVOY, LLC - MD 236   2022-08-21   
301-753 3 Washington Zone 6 MD 876D ONVOY, LLC - MD 236   2020-12-03   
301-753 8 Washington Zone 6 MD 876D ONVOY, LLC - MD 236   2020-12-03   
301-756 5 Washington Zone 14 MD 876D ONVOY, LLC - MD 236   2020-04-30   
301-761 8 Washington Zone 11 MD 876D ONVOY, LLC - MD 236   2024-02-23   
301-769 7 Leonardtown MD 876D ONVOY, LLC - MD 236   2022-08-15   
301-771 0 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2014-09-01   
301-778 2 Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2008-10-05   
301-778 6 Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2012-04-05   
301-780 4 Washington Zone 15 MD 876D ONVOY, LLC - MD 236   2017-07-12   
301-804 2 Ashton MD 876D ONVOY, LLC - MD 236   2014-10-24   
301-804 6 Ashton MD 876D ONVOY, LLC - MD 236   2014-10-24   
301-820 7 Gaithersburg MD 876D ONVOY, LLC - MD 236   2011-06-17   
301-822 2 Washington Zone 11 MD 876D ONVOY, LLC - MD 236   2016-02-09   
301-844 9 Washington Zone 3 MD 876D ONVOY, LLC - MD 236   2024-10-04   
301-851 0 Washington Zone 4 MD 876D ONVOY, LLC - MD 236   2014-08-29   
301-851 6 Washington Zone 4 MD 876D ONVOY, LLC - MD 236   2016-02-29   
301-867 5 Washington Zone 14 MD 876D ONVOY, LLC - MD 236   2016-03-14   
301-867 7 Washington Zone 14 MD 876D ONVOY, LLC - MD 236   2016-03-14   
301-872 3 Ridge MD 876D ONVOY, LLC - MD 236   2023-06-17   
301-888 0 Washington Zone 16 MD 876D ONVOY, LLC - MD 236   2017-07-19   
301-888 3 Washington Zone 16 MD 876D ONVOY, LLC - MD 236   2017-08-13   
301-888 4 Washington Zone 16 MD 876D ONVOY, LLC - MD 236   2017-07-28   
301-888 5 Washington Zone 16 MD 876D ONVOY, LLC - MD 236   2014-10-27   
301-888 6 Washington Zone 16 MD 876D ONVOY, LLC - MD 236   2014-10-27   
301-888 7 Washington Zone 16 MD 876D ONVOY, LLC - MD 236   2017-07-28   
301-900 A Washington Zone 2 MD 876D ONVOY, LLC - MD 236      
301-900 0 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2015-04-20   
301-900 1 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2015-07-27   
301-900 2 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2015-07-27   
301-900 3 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2015-07-27   
301-900 4 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2015-07-27   
301-900 5 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2015-06-27   
301-900 6 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2015-07-27   
301-900 7 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2015-07-27   
301-900 8 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2015-07-27   
301-900 9 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2015-04-20   
301-901 0 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2023-10-15   
301-901 3 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2023-10-15   
301-901 5 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2023-10-15   
301-901 7 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2023-10-15   
301-901 8 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2023-10-15   
301-902 0 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2020-12-03   

<< 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 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 >>

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.