Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 515 [Rate centres in NPA 515] [Dial plan for NPA 515]

NXX: 583

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
515-583 A Corwith IA CRWTIAXP1MD  1262 COMMUNICATIONS 1 NETWORKS, INC. 632      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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