Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 281 [Rate centres in NPA 281] [Dial plan for NPA 281]

NXX: 307

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
281-307 A La Porte TX   903C ONVOY, LLC - TX 560      
281-307 0 La Porte TX   145J TERRA NOVA TELECOM INC. 560   2025-11-05   
281-307 1 La Porte TX   903C ONVOY, LLC - TX 560      
281-307 2 La Porte TX   903C ONVOY, LLC - TX 560      
281-307 3 La Porte TX   903C ONVOY, LLC - TX 560      
281-307 4 La Porte TX   903C ONVOY, LLC - TX 560      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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