Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 737 [Rate centres in NPA 737] [Dial plan for NPA 737]

NXX: 450

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
737-450 A Lockhart TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2026-02-07   
737-450 0 Lockhart TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2026-02-07   
737-450 2 Lockhart TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2026-09-04   
737-450 8 Lockhart TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2026-09-09   
737-450 9 Lockhart TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2026-09-09   

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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