Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 501 [Rate centres in NPA 501] [Dial plan for NPA 501]

NXX: 608

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
501-608 A Sylvan Hills-Sherwood AR   515J IP HORIZON LLC 528   2026-08-08   
501-608 1 Sylvan Hills-Sherwood AR   515J IP HORIZON LLC 528   2026-08-08   
501-608 2 Sylvan Hills-Sherwood AR   515J IP HORIZON LLC 528   2026-08-08   

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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