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: 437

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
254-437 A Hillsboro TX WACOTX36EMD  073H TELNYX LLC 556      
254-437 0 Hillsboro TX WACOTX36EMD  073H TELNYX LLC 556   2021-06-17   
254-437 1 Hillsboro TX   6529 T-MOBILE USA, INC. 556   2025-02-27   
254-437 2 Hillsboro TX   6529 T-MOBILE USA, INC. 556   2025-02-27   
254-437 3 Hillsboro TX   6529 T-MOBILE USA, INC. 556   2025-02-27   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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