Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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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   516J TON80 COMMUNICATIONS, LLC 548   2022-04-11   
940-550 1 Graham TX   9533 SOUTHWESTERN BELL 548      
940-550 2 Graham TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 548   2010-11-12   
940-550 3 Graham TX   516C AT&T CORP. 548   2012-01-07   
940-550 4 Graham TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 548      
940-550 5 Graham TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 548      
940-550 6 Graham TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 548   2023-07-30   
940-550 7 Graham TX   9533 SOUTHWESTERN BELL 548      
940-550 8 Graham TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 548      
940-550 9 Graham TX   9533 SOUTHWESTERN BELL 548      

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

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