Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 512 [Rate centres in NPA 512] [Dial plan for NPA 512]

NXX: 274

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
512-274 A Jarrell TX AUSVTXDK1MD  6630 USA MOBILITY WIRELESS, INC. 558      

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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