Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 605 [Rate centres in NPA 605] [Dial plan for NPA 605]

NXX: 657

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
605-657 A Watertown SD SXFLSDCOTMD  162G ONVOY, LLC - SD 640      
605-657 0 Watertown SD SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2021-07-10   
605-657 1 Watertown SD SXFLSDCHIMD  106F BANDWIDTH.COM CLEC, LLC - SD 640   2022-07-15   
605-657 2 Watertown SD SXFLSDCOX9X  6569 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 640   2022-06-30   
605-657 3 Watertown SD SXFLSDCONMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640   2022-06-17   
605-657 4 Watertown SD SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2021-10-10   
605-657 5 Watertown SD SXFLSDCOX0X  624H ONVOY SPECTRUM, LLC 640   2024-12-20   
605-657 6 Watertown SD SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2021-01-03   
605-657 7 Watertown SD SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2021-01-03   
605-657 8 Watertown SD SXFLSDCONMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640   2022-06-17   
605-657 9 Watertown SD SXFLSDCONMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640   2022-03-17   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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