Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 903 [Rate centres in NPA 903] [Dial plan for NPA 903]

NXX: 418

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
903-418 A Detroit TX DTRTTXXAPS0  1181 VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 552      
903-418 0 Detroit TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2019-07-10   
903-418 1 Detroit TX DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2020-03-09   
903-418 2 Detroit TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2020-08-17   
903-418 3 Detroit TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2020-08-17   
903-418 4 Detroit TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2020-08-17   
903-418 5 Detroit TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2021-02-14   
903-418 6 Detroit TX DLLTTXID1MD  6529 T-MOBILE USA, INC. 552   2022-01-26   
903-418 7 Detroit TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2021-02-03   
903-418 8 Detroit TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2021-02-03   
903-418 9 Detroit TX DTRTTXXAPS0  1181 VALOR TELECOMM TX, LD-TX #2 DBA WINDSTREAM COMM SW 552   2015-04-17   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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