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: ATMRALXAXMD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
448-877 0 Walnut Hill FL 937C ONVOY, LLC - FL 480   2023-12-03   
850-761 0 Walnut Hill FL 937C ONVOY, LLC - FL 480   2018-12-09   
850-761 1 Walnut Hill FL 937C ONVOY, LLC - FL 480   2018-12-09   
850-761 4 Walnut Hill FL 937C ONVOY, LLC - FL 480   2019-10-22   
850-761 5 Walnut Hill FL 937C ONVOY, LLC - FL 480   2019-10-22   
850-761 7 Walnut Hill FL 937C ONVOY, LLC - FL 480   2018-10-12   
850-761 9 Walnut Hill FL 937C ONVOY, LLC - FL 480   2019-02-13   
850-828 A Walnut Hill FL 937C ONVOY, LLC - FL 480      
850-828 2 Walnut Hill FL 937C ONVOY, LLC - FL 480   2020-02-01   
850-828 6 Walnut Hill FL 937C ONVOY, LLC - FL 480   2020-10-27   
850-828 8 Walnut Hill FL 937C ONVOY, LLC - FL 480   2020-02-01   
850-996 5 Walnut Hill FL 937C ONVOY, LLC - FL 480   2023-12-03   
850-996 6 Walnut Hill FL 937C ONVOY, LLC - FL 480   2020-09-04   

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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