Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 817 [Rate centres in NPA 817] [Dial plan for NPA 817]

NXX: 257

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
817-257 A Fort Worth TX DLLSTXHM0MD  829J PAETEC ITEL, LLC 552   2025-01-23   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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