Local Calling Guide

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NPA: 281 [Rate centres in NPA 281] [Dial plan for NPA 281]

NXX: 501

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
281-501 A Houston TX HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560      
281-501 0 Houston TX   318J COMCAST IP PHONE, LLC 560   2007-02-14   
281-501 1 Houston TX   318J COMCAST IP PHONE, LLC 560   2007-02-14   
281-501 2 Houston TX   318J COMCAST IP PHONE, LLC 560   2007-02-14   
281-501 3 Houston TX   318J COMCAST IP PHONE, LLC 560   2007-02-14   
281-501 4 Houston TX   7074 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 560   2007-07-31   
281-501 5 Houston TX   7074 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 560   2007-07-31   
281-501 6 Houston TX   903C ONVOY, LLC - TX 560   2007-08-10   
281-501 7 Houston TX   903C ONVOY, LLC - TX 560   2007-08-10   
281-501 8 Houston TX   318J COMCAST IP PHONE, LLC 560   2007-10-15   
281-501 9 Houston TX   318J COMCAST IP PHONE, LLC 560   2007-08-26   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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