Local Calling Guide

Area code/prefix search

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NPA: 940 [Rate centres in NPA 940] [Dial plan for NPA 940]

NXX: 550

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
940-550 A Graham TX GRHMTXLIDS0  9533 SOUTHWESTERN BELL 548      
940-550 0 Graham TX WCFLTXNIXTX  516J TON80 COMMUNICATIONS, LLC 548   2022-04-11   
940-550 1 Graham TX GRHMTXLIDS0  9533 SOUTHWESTERN BELL 548      
940-550 2 Graham TX WCFLTXNIXOX  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 548   2010-11-12   
940-550 3 Graham TX WCFLTXCFBMD  516C AT&T CORP. 548   2012-01-07   
940-550 4 Graham TX WCFLTXNIX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 548      
940-550 5 Graham TX WCFLTXNIX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 548      
940-550 6 Graham TX WCFLTXNIX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 548   2023-07-30   
940-550 7 Graham TX GRHMTXLIDS0  9533 SOUTHWESTERN BELL 548      
940-550 8 Graham TX WCFLTXNIX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 548      
940-550 9 Graham TX GRHMTXLIDS0  9533 SOUTHWESTERN BELL 548      

Last updated: Tue, 07 Oct 2025 16:47:53 UTC

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