Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Tyndall, SD

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
605-464 A SXFLSDCOX9X  6569 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 640      
605-464 0   6569 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 640      
605-464 1   6569 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 640      
605-464 2   6569 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 640   2023-06-12   
605-464 3   6569 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 640   2024-12-14   
605-464 4   6569 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 640      
605-464 6   6569 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 640   2023-12-27   
605-464 7   6569 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 640      
605-464 8   145J TERRA NOVA TELECOM INC. 640   2025-08-01   
605-464 9   6569 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 640      
605-589 A TYNDSDXARS1  1660 FORT RANDALL TELCO DBA MT RUSHMORE TELEPHONE CO 640      

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

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