Local Calling Guide

Rate centre information

Search by rate centre (exchange) name, region, area code, LATA. Enter full or partial name. Use official postal abbreviations for province/state/territory.

Sorum, SD [Prefix detail]

LATA: 640 SOUTH DAKOTA

LIR:

V: 06221 H: 05951

ILEC: 1689 WEST RIVER COOPERATIVE TELEPHONE COMPANY

Includes all or part of:

NPA 605:

866

See all [Local Prefixes]

Local calling FROM 4 exchanges: [Reverse direction]

Rate centrePlan typeCall typeMonthly limit (minutes)NoteEffective date
Bison, SD     
Lemmon, SD     
Meadow, SD     
North Lemmon, ND     

Last updated: Sun, 17 May 2026 03:26:51 UTC

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