Reference Data
Rate Center Directory
OLDHAMRMON, SD Rate Center

OLDHAMRMON — SD

Data last updated: March 10, 2026

LATA
640
State
SD
Area Codes
1
Exchanges (NXX)
1
Carriers
1
Coordinates
44.164375887461, -97.26928656011997

Area Codes

605

Top Carriers

Carrier OCN NXX Count
ALLIANCE COMM. COOPERATIVE, INC. (SPLIT ROCK) 1657 1