Reference Data Rate Center Directory ROCK LAKE, ND Rate Center ROCK LAKE — ND Data last updated: March 10, 2026 LATA 636 State ND Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 48.78962045700627, -99.2461572028316 Area Codes 701 Top Carriers Carrier OCN NXX Count UNITED TEL. MUTUAL AID CORP. 1636 1
