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.

Jefferson, SD [Prefix detail]

LATA: 640 SOUTH DAKOTA

LIR:

V: 06458 H: 04799

ILEC: 1666 JEFFERSON TEL. CO.

NPA 605:

966

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Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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