Reference Data Rate Center Directory NIAGARA, ND Rate Center NIAGARA — ND Data last updated: March 10, 2026 LATA 636 State ND Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 47.99656278564059, -97.86917632204558 Area Codes 701 Top Carriers Carrier OCN NXX Count POLAR COMMUN MUTUAL AID CORP. 1630 1
