Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 972 [Rate centres in NPA 972] [Dial plan for NPA 972]

NXX: 370

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
972-370 A Frisco EACS TX FRSCTXCODS1  9533 SOUTHWESTERN BELL 552      
972-370 0 Frisco EACS TX   9533 SOUTHWESTERN BELL 552      
972-370 1 Frisco EACS TX   9533 SOUTHWESTERN BELL 552      
972-370 2 Frisco EACS TX   9533 SOUTHWESTERN BELL 552      
972-370 3 Frisco EACS TX   177F PEERLESS NETWORK OF TEXAS, LLC - TX 552   2013-04-26   
972-370 4 Frisco EACS TX   6529 T-MOBILE USA, INC. 552   2014-09-01   
972-370 5 Frisco EACS TX   177F PEERLESS NETWORK OF TEXAS, LLC - TX 552   2013-04-26   
972-370 6 Frisco EACS TX   5562 METROPCS, INC. 552   2009-03-05   
972-370 7 Frisco EACS TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2019-02-02   
972-370 8 Frisco EACS TX   5562 METROPCS, INC. 552   2009-03-05   
972-370 9 Frisco EACS TX   9533 SOUTHWESTERN BELL 552      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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