Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 817 [Rate centres in NPA 817] [Dial plan for NPA 817]

NXX: 587

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
817-587 A Alvarado TX DLLSTXALDS4  903C ONVOY, LLC - TX 552      
817-587 0 Alvarado TX   177F PEERLESS NETWORK OF TEXAS, LLC - TX 552   2019-10-30   
817-587 1 Alvarado TX   903C ONVOY, LLC - TX 552   2020-04-11   
817-587 2 Alvarado TX   903C ONVOY, LLC - TX 552   2020-02-21   
817-587 3 Alvarado TX   903C ONVOY, LLC - TX 552   2020-02-21   
817-587 4 Alvarado TX   903C ONVOY, LLC - TX 552   2020-02-21   
817-587 5 Alvarado TX   829J PAETEC ITEL, LLC 552   2013-06-12   
817-587 6 Alvarado TX   903C ONVOY, LLC - TX 552   2016-03-19   
817-587 7 Alvarado TX   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 552   2012-04-15   
817-587 8 Alvarado TX   903C ONVOY, LLC - TX 552   2020-04-11   
817-587 9 Alvarado TX   903C ONVOY, LLC - TX 552   2016-03-19   

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

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