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: 521

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
940-521 A Graham TX GRHMTXLIDS0  9533 SOUTHWESTERN BELL 548      
940-521 0 Graham TX   9533 SOUTHWESTERN BELL 548      
940-521 1 Graham TX   9533 SOUTHWESTERN BELL 548      
940-521 2 Graham TX   9533 SOUTHWESTERN BELL 548      
940-521 3 Graham TX   145J TERRA NOVA TELECOM INC. 548   2022-05-06   
940-521 4 Graham TX   9533 SOUTHWESTERN BELL 548      
940-521 5 Graham TX   9533 SOUTHWESTERN BELL 548      
940-521 6 Graham TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 548   2009-05-18   
940-521 7 Graham TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 548   2010-01-30   
940-521 8 Graham TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 548   2009-12-21   
940-521 9 Graham TX   9533 SOUTHWESTERN BELL 548      

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

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