Reference Data Rate Center Directory SUPERIOR, IA Rate Center SUPERIOR — IA Data last updated: March 10, 2026 LATA 630 State IA Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 43.43169668893059, -94.9475087859546 Area Codes 712 Top Carriers Carrier OCN NXX Count SUPERIOR TEL. COOP. 1307 1
