Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 830 [Rate centres in NPA 830] [Dial plan for NPA 830]

NXX: 374

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
830-374 A Crystal City TX CRCYTXCCRS0  9533 SOUTHWESTERN BELL 566      
830-374 0 Crystal City TX   177F PEERLESS NETWORK OF TEXAS, LLC - TX 566   2014-05-02   
830-374 1 Crystal City TX   9533 SOUTHWESTERN BELL 566      
830-374 2 Crystal City TX   9533 SOUTHWESTERN BELL 566      
830-374 3 Crystal City TX   9533 SOUTHWESTERN BELL 566      
830-374 4 Crystal City TX   9533 SOUTHWESTERN BELL 566      
830-374 5 Crystal City TX   9533 SOUTHWESTERN BELL 566      
830-374 6 Crystal City TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566      
830-374 7 Crystal City TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566      
830-374 8 Crystal City TX   9533 SOUTHWESTERN BELL 566      
830-374 9 Crystal City TX   9533 SOUTHWESTERN BELL 566      

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

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