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: 991

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
605-991 A Milbank SD SXFLSDPSDS1  580H AIRUS, INC. - SD 640      
605-991 0 Milbank SD SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2021-07-08   
605-991 1 Milbank SD SXFLSDPSDS1  580H AIRUS, INC. - SD 640   2021-05-22   
605-991 2 Milbank SD SXFLSDCHIMD  106F BANDWIDTH.COM CLEC, LLC - SD 640   2021-07-29   
605-991 3 Milbank SD SXFLSDCORMD  5180 LEVEL 3 COMMUNICATIONS, LLC - SD 640   2023-01-07   
605-991 4 Milbank SD SXFLSDCOX0X  624H ONVOY SPECTRUM, LLC 640   2024-12-20   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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