Local Calling Guide

Area code/prefix search

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OCN: 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
972-607 1 Irving TX   552      
972-607 2 Irving TX   552      
972-608 A Plano TX PLANTXXDDS1  552      
972-608 0 Plano TX   552      
972-608 1 Plano TX   552      
972-608 2 Plano TX   552      
972-608 4 Plano TX   552      
972-608 5 Plano TX   552      
972-608 6 Plano TX   552      
972-608 8 Plano TX   552      
972-608 9 Plano TX   552      
972-612 A Plano TX PLANTXXBDS0  552      
972-615 A Dallas Fort Worth Airport EMS TX DFIATXXADS0  552      
972-618 A Plano TX PLANTXXKDS0  552      
972-621 A Irving EMS TX IRNGTXXFDS0  552      
972-621 0 Irving EMS TX   552      
972-621 2 Irving EMS TX   552      
972-621 3 Irving EMS TX   552      
972-621 4 Irving EMS TX   552      
972-621 5 Irving EMS TX   552      
972-621 6 Irving EMS TX   552      
972-621 7 Irving EMS TX   552      
972-621 8 Irving EMS TX   552      
972-633 A Plano TX PLANTXXADS0  552      
972-650 A Irving TX IRNGTXXEDS0  552      
972-652 A Irving TX IRNGTXXEDS0  552      
972-652 1 Irving TX   552      
972-652 4 Irving TX   552      
972-652 5 Irving TX   552      
972-652 6 Irving TX   552      
972-652 7 Irving TX   552      
972-652 9 Irving TX   552      
972-653 A Irving TX IRNGTXXEDS0  552      
972-653 1 Irving TX   552      
972-653 3 Irving TX   552      
972-653 5 Irving TX   552      
972-653 6 Irving TX   552      
972-653 7 Irving TX   552      
972-653 9 Irving TX   552      
972-655 A Irving TX IRNGTXXEDS0  552      
972-655 0 Irving TX   552      
972-655 1 Irving TX   552      
972-655 2 Irving TX   552      
972-655 3 Irving TX   552      
972-655 5 Irving TX   552      
972-655 7 Irving TX   552      
972-657 A Irving TX IRNGTXXEDS0  552      
972-657 4 Irving TX   552      
972-657 5 Irving TX   552      
972-657 6 Irving TX   552      

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

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