Reference Data Rate Center Directory KNIERIM, IA Rate Center KNIERIM — IA Data last updated: March 10, 2026 LATA 632 State IA Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 42.45531796814117, -94.45732780872949 Area Codes 515 Top Carriers Carrier OCN NXX Count WEBSTER-CALHOUN COOP. TEL. ASSN. 1328 1
