Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 409 [Rate centres in NPA 409] [Dial plan for NPA 409]

NXX: 438

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
409-438 A Sour Lake TX   883K AHOI LLC 562   2026-01-04   
409-438 2 Sour Lake TX   883K AHOI LLC 562   2026-01-04   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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