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.

OCN: 876D ONVOY, LLC - MD

<< 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 49 50 51 52 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
301-381 6 Washington Zone 2 MD VINNVACBDS0  236   2022-09-16   
301-381 7 Washington Zone 2 MD VINNVACBDS0  236   2022-09-16   
301-381 8 Washington Zone 2 MD VINNVACBDS0  236   2022-09-16   
301-381 9 Washington Zone 2 MD VINNVACBDS0  236   2022-09-16   
301-389 2 Washington Zone 13 MD VINNVACBDS0  236   2022-08-21   
301-389 5 Washington Zone 13 MD VINNVACBDS0  236   2016-04-06   
301-389 6 Washington Zone 13 MD VINNVACBDS0  236   2016-04-06   
301-396 7 Waldorf MD VINNVACBDS0  236   2019-02-19   
301-409 0 Washington Zone 2 MD VINNVACBDS0  236   2022-04-25   
301-409 3 Washington Zone 2 MD VINNVACBDS0  236   2022-12-12   
301-409 4 Washington Zone 2 MD VINNVACBDS0  236   2022-12-12   
301-409 5 Washington Zone 2 MD VINNVACBDS0  236   2022-12-12   
301-409 6 Washington Zone 2 MD VINNVACBDS0  236   2022-12-12   
301-414 8 Damascus MD VINNVACBDS0  236   2016-03-11   
301-417 5 Washington Zone 10 MD VINNVACBDS0  236   2015-06-27   
301-433 7 Washington Zone 5 MD VINNVACBDS0  236   2015-06-27   
301-450 5 Washington Zone 3 MD VINNVACBDS0  236   2022-09-17   
301-450 6 Washington Zone 3 MD VINNVACBDS0  236   2022-09-17   
301-450 7 Washington Zone 3 MD VINNVACBDS0  236   2022-09-17   
301-450 8 Washington Zone 3 MD VINNVACBDS0  236   2022-09-17   
301-453 4 Kitzmiller MD CMLDMDCMEMD  240   2016-09-12   
301-453 8 Kitzmiller MD CMLDMDCMEMD  240   2016-09-12   
301-458 3 Washington Zone 4 MD VINNVACBDS0  236   2016-02-29   
301-477 8 Washington Zone 13 MD VINNVACBDS0  236   2018-01-14   
301-477 9 Washington Zone 13 MD VINNVACBDS0  236   2018-01-14   
301-478 8 Flintstone MD CMLDMDCMEMD  240   2016-09-12   
301-478 9 Flintstone MD CMLDMDCMEMD  240   2016-09-12   
301-479 5 Washington Zone 13 MD VINNVACBDS0  236   2023-06-17   
301-479 6 Washington Zone 13 MD VINNVACBDS0  236   2023-06-17   
301-479 8 Washington Zone 13 MD VINNVACBDS0  236   2023-06-17   
301-479 9 Washington Zone 13 MD VINNVACBDS0  236   2023-06-17   
301-485 2 Washington Zone 6 MD VINNVACBDS0  236   2016-03-02   
301-485 4 Washington Zone 6 MD VINNVACBDS0  236   2016-04-28   
301-485 5 Washington Zone 6 MD VINNVACBDS0  236   2015-06-27   
301-507 0 Washington Zone 13 MD   236   2024-02-24   
301-507 1 Washington Zone 13 MD   236   2024-02-24   
301-507 2 Washington Zone 13 MD   236   2024-02-24   
301-507 3 Washington Zone 13 MD   236   2024-02-24   
301-517 6 Washington Zone 10 MD VINNVACBDS0  236   2018-01-13   
301-517 9 Washington Zone 10 MD VINNVACBDS0  236   2018-01-13   
301-539 6 La Plata MD VINNVACBDS0  236   2022-08-21   
301-547 7 Washington Zone 2 MD VINNVACBDS0  236   2020-12-03   
301-550 2 Washington Zone 10 MD VINNVACBDS0  236   2022-10-15   
301-569 9 Gaithersburg MD VINNVACBDS0  236   2012-04-05   
301-579 7 Brandywine MD VINNVACBDS0  236   2016-03-03   
301-579 8 Brandywine MD VINNVACBDS0  236   2016-03-03   
301-591 7 Gaithersburg MD VINNVACBDS0  236   2021-02-18   
301-597 1 Waldorf MD VINNVACBDS0  236   2022-04-25   
301-597 4 Waldorf MD VINNVACBDS0  236   2022-04-25   
301-597 7 Waldorf MD VINNVACBDS0  236   2022-04-25   

<< 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 49 50 51 52 >>

Last updated: Wed, 07 Feb 2024 04:12:25 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.