ISABEL, SD Rate Center

ISABEL — SD

Data last updated: June 25, 2026

LATA

640

State

Area Codes

Exchanges (NXX)

Carriers

Coordinates

45.39478289375788, -101.429226115013

Area Codes

Carrier	OCN	NXX Count
CHEYENNE RIVER SIOUX TRIBAL TEL. AUTHORITY	1647	1