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 53 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
443-317 2 Chase MD BLTMMDCH42Z  238   2012-10-08   
443-320 6 Baltimore MD BLTMMDCH42Z  238   2024-01-06   
443-320 8 Baltimore MD BLTMMDCH42Z  238   2024-01-06   
443-322 3 Towson MD BLTMMDCH42Z  238   2020-06-04   
443-323 0 Sharptown MD SLBRMDSBXVX  242   2020-04-30   
443-323 1 Sharptown MD SLBRMDSBXVX  242   2020-07-04   
443-323 2 Sharptown MD SLBRMDSBXVX  242   2020-07-04   
443-328 0 Sykesville MD BLTMMDCH42Z  238   2021-04-29   
443-329 5 Waterloo (Washington DC LATA) MD VINNVACBDS0  236   2020-06-20   
443-329 9 Waterloo (Washington DC LATA) MD VINNVACBDS0  236   2020-06-20   
443-331 2 Taneytown MD   238   2024-03-03   
443-331 4 Taneytown MD BLTMMDCH42Z  238   2016-03-21   
443-331 5 Taneytown MD BLTMMDCH42Z  238   2016-03-21   
443-331 9 Taneytown MD BLTMMDCH42Z  238   2016-04-08   
443-332 3 Crofton MD   238   2024-03-03   
443-332 7 Crofton MD BLTMMDCH42Z  238   2021-04-29   
443-332 9 Crofton MD BLTMMDCH42Z  238   2021-04-29   
443-335 8 Brooklyn Park-Linthicum MD BLTMMDCH42Z  238   2021-03-04   
443-335 9 Brooklyn Park-Linthicum MD BLTMMDCH42Z  238   2021-03-04   
443-338 8 Sparks-Glencoe MD BLTMMDCH42Z  238   2016-03-26   
443-338 9 Sparks-Glencoe MD BLTMMDCH42Z  238   2016-03-26   
443-339 5 Sherwood Forest MD BLTMMDCH42Z  238   2016-03-18   
443-339 6 Sherwood Forest MD BLTMMDCH42Z  238   2016-03-18   
443-339 8 Sherwood Forest MD BLTMMDCH42Z  238   2014-09-27   
443-339 9 Sherwood Forest MD BLTMMDCH42Z  238   2014-09-27   
443-342 2 Solomons MD BLTMMDCH42Z  238   2016-04-04   
443-342 3 Solomons MD BLTMMDCH42Z  238   2014-09-13   
443-342 9 Solomons MD BLTMMDCH42Z  238   2016-04-04   
443-346 1 Severna Park MD BLTMMDCH42Z  238   2021-05-21   
443-347 0 Cardiff MD BLTMMDCH42Z  238   2016-03-31   
443-347 5 Cardiff MD BLTMMDCH42Z  238   2016-03-14   
443-347 6 Cardiff MD BLTMMDCH42Z  238   2016-03-14   
443-348 0 Woodlawn MD   238   2024-03-08   
443-351 6 Odenton MD   238   2024-03-01   
443-360 3 Aberdeen MD BLTMMDCH42Z  236   2012-02-29   
443-364 3 Ellicott City MD BLTMMDCH42Z  238   2012-02-29   
443-373 0 Ocean City MD SLBRMDSBXVX  242   2017-04-14   
443-378 9 Baltimore MD   238   2024-02-24   
443-381 0 Reisterstown MD BLTMMDCH42Z  238   2021-09-23   
443-381 6 Reisterstown MD   238   2024-03-09   
443-383 3 Silver Run MD BLTMMDCH42Z  238   2016-03-25   
443-383 4 Silver Run MD BLTMMDCH42Z  238   2016-03-25   
443-390 5 Churchville MD   238   2024-03-03   
443-390 7 Churchville MD BLTMMDCH42Z  238   2012-10-08   
443-392 3 Baltimore MD   238   2024-02-24   
443-396 2 Odenton MD BLTMMDCH42Z  238   2012-10-07   
443-396 7 Odenton MD BLTMMDCH42Z  238   2018-05-27   
443-398 3 Sykesville MD BLTMMDCH42Z  238   2012-02-29   
443-399 2 Dundalk MD BLTMMDCH42Z  238   2012-10-08   
443-400 7 Brooklyn Park-Linthicum MD BLTMMDCH42Z  238   2012-09-13   

<< 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 53 >>

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.