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: 645

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
972-645 A Italy TX DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
972-645 0 Italy TX   177F PEERLESS NETWORK OF TEXAS, LLC - TX 552   2019-06-27   
972-645 1 Italy TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2018-03-08   
972-645 2 Italy TX   903C ONVOY, LLC - TX 552   2019-10-07   
972-645 3 Italy TX   903C ONVOY, LLC - TX 552   2019-10-07   
972-645 4 Italy TX   903C ONVOY, LLC - TX 552   2019-10-07   
972-645 5 Italy TX   903C ONVOY, LLC - TX 552   2020-02-10   
972-645 6 Italy TX   903C ONVOY, LLC - TX 552   2018-07-26   
972-645 7 Italy TX   177F PEERLESS NETWORK OF TEXAS, LLC - TX 552   2019-10-30   
972-645 8 Italy TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552   2019-12-14   
972-645 9 Italy TX   903C ONVOY, LLC - TX 552   2020-02-10   

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

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