Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 850 [Rate centres in NPA 850] [Dial plan for NPA 850]

NXX: 856

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
850-856 A Gretna FL GRETFLXARP0  0338 QUINCY TEL CO 45011      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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