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: SLBRMDSBXVX

<< 1 2 3 4 5 6 7 8 9 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
443-437 1 Pocomoke MD 876D ONVOY, LLC - MD 242   2019-03-04   
443-437 4 Pocomoke MD 876D ONVOY, LLC - MD 242   2017-04-14   
443-439 8 Trappe MD 876D ONVOY, LLC - MD 242   2017-04-14   
443-446 3 Queenstown MD 876D ONVOY, LLC - MD 242   2021-03-05   
443-446 4 Queenstown MD 876D ONVOY, LLC - MD 242   2018-09-13   
443-446 5 Queenstown MD 876D ONVOY, LLC - MD 242   2021-03-05   
443-448 1 Denton MD 876D ONVOY, LLC - MD 242   2021-03-05   
443-448 8 Denton MD 876D ONVOY, LLC - MD 242   2017-04-13   
443-493 7 Delmar MD 876D ONVOY, LLC - MD 242   2017-04-13   
443-493 8 Delmar MD 876D ONVOY, LLC - MD 242   2021-04-02   
443-496 3 Easton MD 876D ONVOY, LLC - MD 242   2018-07-19   
443-513 2 Berlin MD 876D ONVOY, LLC - MD 242   2020-08-09   
443-566 9 Chesapeake City MD 876D ONVOY, LLC - MD 242   2021-03-05   
443-664 3 Ocean City MD 876D ONVOY, LLC - MD 242   2020-08-09   
443-665 0 Nanticoke MD 876D ONVOY, LLC - MD 242   2020-04-30   
443-665 2 Nanticoke MD 876D ONVOY, LLC - MD 242   2023-05-18   
443-665 8 Nanticoke MD 876D ONVOY, LLC - MD 242   2020-04-30   
443-665 9 Nanticoke MD 876D ONVOY, LLC - MD 242   2020-04-30   
443-706 1 Crisfield MD 876D ONVOY, LLC - MD 242   2021-04-29   
443-706 8 Crisfield MD 876D ONVOY, LLC - MD 242   2017-04-13   
443-706 9 Crisfield MD 876D ONVOY, LLC - MD 242   2021-04-29   
443-727 1 Bishopville MD 876D ONVOY, LLC - MD 242   2021-03-05   
443-727 7 Bishopville MD 876D ONVOY, LLC - MD 242   2017-04-13   
443-746 7 Easton MD 876D ONVOY, LLC - MD 242   2020-04-30   
443-746 8 Easton MD 876D ONVOY, LLC - MD 242   2020-04-30   
443-888 0 Princess Anne MD 876D ONVOY, LLC - MD 242   2017-04-14   
443-888 2 Princess Anne MD 876D ONVOY, LLC - MD 242   2019-03-10   
443-888 3 Princess Anne MD 876D ONVOY, LLC - MD 242   2019-03-10   
443-888 5 Princess Anne MD 876D ONVOY, LLC - MD 242   2023-10-22   
443-972 5 Cambridge MD 876D ONVOY, LLC - MD 242   2017-04-13   
443-978 4 Salisbury MD 876D ONVOY, LLC - MD 242   2024-02-25   
443-978 5 Salisbury MD 876D ONVOY, LLC - MD 242   2024-02-25   
443-988 7 Centreville MD 876D ONVOY, LLC - MD 242   2017-04-13   
667-220 A Greensboro MD 876D ONVOY, LLC - MD 242      
667-220 0 Greensboro MD 876D ONVOY, LLC - MD 242   2017-05-15   
667-220 5 Greensboro MD 876D ONVOY, LLC - MD 242   2019-05-17   
667-220 6 Greensboro MD 876D ONVOY, LLC - MD 242   2020-06-20   
667-220 7 Greensboro MD 876D ONVOY, LLC - MD 242   2020-06-20   
667-220 8 Greensboro MD 876D ONVOY, LLC - MD 242   2019-03-04   
667-220 9 Greensboro MD 876D ONVOY, LLC - MD 242   2019-03-04   
667-221 3 Salisbury MD 876D ONVOY, LLC - MD 242   2024-07-12   
667-226 A St Michaels MD 876D ONVOY, LLC - MD 242      
667-226 0 St Michaels MD 876D ONVOY, LLC - MD 242   2017-05-11   
667-226 8 St Michaels MD 876D ONVOY, LLC - MD 242   2019-02-26   
667-226 9 St Michaels MD 876D ONVOY, LLC - MD 242   2019-02-26   
667-230 1 Centreville MD 876D ONVOY, LLC - MD 242   2021-03-05   
667-230 2 Centreville MD 876D ONVOY, LLC - MD 242   2018-05-27   
667-230 8 Centreville MD 876D ONVOY, LLC - MD 242   2019-03-04   
667-230 9 Centreville MD 876D ONVOY, LLC - MD 242   2019-03-04   
667-238 3 Preston MD 876D ONVOY, LLC - MD 242   2021-03-05   

<< 1 2 3 4 5 6 7 8 9 >>

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.