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 >>

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
443-672 4 Parkton MD   238   2019-02-19   
443-672 5 Parkton MD   238   2019-02-19   
443-678 0 Parkville MD   238   2014-08-31   
443-688 9 Severn MD   238   2021-03-04   
443-704 3 Odenton MD   238   2020-06-04   
443-706 1 Crisfield MD   242   2021-04-29   
443-706 8 Crisfield MD   242   2017-04-13   
443-706 9 Crisfield MD   242   2021-04-29   
443-707 2 Aberdeen MD   236   2015-07-29   
443-707 3 Aberdeen MD   236   2015-07-29   
443-715 4 North East MD   238   2021-04-29   
443-715 6 North East MD   238   2021-04-29   
443-719 1 Jarrettsville MD   238   2021-03-04   
443-720 3 Aberdeen MD   236   2016-02-25   
443-720 7 Aberdeen MD   236   2014-08-30   
443-727 1 Bishopville MD   242   2021-03-05   
443-727 7 Bishopville MD   242   2017-04-13   
443-730 5 Essex MD   238   2016-01-14   
443-730 7 Essex MD   238   2016-03-27   
443-731 5 Port Deposit MD   238   2018-06-16   
443-732 3 Silver Run MD   238   2012-10-08   
443-733 4 Waterloo MD   238   2016-04-28   
443-733 6 Waterloo MD   238   2016-04-28   
443-734 1 Severn MD   238   2014-09-06   
443-734 3 Severn MD   238   2016-01-22   
443-737 6 Waterloo MD   238   2016-03-21   
443-737 7 Waterloo MD   238   2016-03-21   
443-746 7 Easton MD   242   2020-04-30   
443-746 8 Easton MD   242   2020-04-30   
443-747 7 Port Deposit MD   238   2012-10-08   
443-748 1 Millersville MD   238   2021-04-02   
443-753 7 Waterloo (Washington DC LATA) MD   236   2021-05-21   
443-764 8 Glen Burnie MD   238   2012-10-07   
443-767 1 Worthington MD   238   2020-06-11   
443-767 3 Worthington MD   238   2020-06-11   
443-767 4 Worthington MD   238   2012-10-08   
443-770 6 Armiger-Gibson Island MD   238   2014-09-05   
443-775 2 Annapolis MD   238   2014-12-31   
443-775 3 Annapolis MD   238   2014-12-31   
443-775 7 Annapolis MD   238   2016-02-22   
443-776 2 Elkridge MD   238   2014-09-27   
443-776 4 Elkridge MD   238   2014-09-27   
443-781 5 Armiger-Gibson Island MD   238   2021-03-04   
443-781 6 Armiger-Gibson Island MD   238   2021-03-04   
443-781 8 Armiger-Gibson Island MD   238   2019-02-19   
443-781 9 Armiger-Gibson Island MD   238   2019-02-19   
443-782 3 Annapolis MD   238   2017-06-02   
443-782 4 Annapolis MD   238   2018-05-27   
443-785 A Arbutus MD BLTMMDCH42Z  238      
443-787 3 Bel Air MD   238   2014-09-05   

<< 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 >>

Last updated: Mon, 24 May 2021 01:28:43 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.