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

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
667-843 9 Deal Island MD 876D ONVOY, LLC - MD 242   2019-03-04   
667-853 3 Pocomoke MD 876D ONVOY, LLC - MD 242   2021-03-05   
667-853 4 Pocomoke MD 876D ONVOY, LLC - MD 242   2021-03-05   
667-853 8 Pocomoke MD 876D ONVOY, LLC - MD 242   2021-12-20   
667-868 0 Crisfield MD 876D ONVOY, LLC - MD 242   2019-03-04   
667-868 1 Crisfield MD 876D ONVOY, LLC - MD 242   2019-03-04   
667-868 7 Crisfield MD 876D ONVOY, LLC - MD 242   2021-05-21   
667-897 7 Chesapeake City MD 876D ONVOY, LLC - MD 242   2022-10-16   
667-977 0 Salisbury MD 876D ONVOY, LLC - MD 242   2023-08-10   
667-977 1 Salisbury MD 876D ONVOY, LLC - MD 242   2023-08-10   
667-977 2 Salisbury MD 876D ONVOY, LLC - MD 242   2023-08-10   
667-977 3 Salisbury MD 876D ONVOY, LLC - MD 242   2023-08-10   
667-977 4 Salisbury MD 876D ONVOY, LLC - MD 242   2023-08-10   
667-977 5 Salisbury MD 876D ONVOY, LLC - MD 242   2023-08-10   
667-977 6 Salisbury MD 876D ONVOY, LLC - MD 242   2023-08-10   
667-977 8 Salisbury MD 876D ONVOY, LLC - MD 242   2023-08-10   

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Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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