Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 254 [Rate centres in NPA 254] [Dial plan for NPA 254]

NXX: 604

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
254-604 A Killeen TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 556   2025-11-07   
254-604 1 Killeen TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 556   2025-11-07   
254-604 2 Killeen TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 556   2025-11-07   
254-604 3 Killeen TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 556   2025-11-07   
254-604 4 Killeen TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 556   2025-11-07   
254-604 5 Killeen TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 556   2025-11-07   
254-604 6 Killeen TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 556   2025-11-07   

Last updated: Mon, 15 Sep 2025 02:24:40 UTC

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