Reference Data Rate Center Directory ALTON, IA Rate Center ALTON — IA Data last updated: March 10, 2026 LATA 630 State IA Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 42.98699922210462, -96.01301296082195 Area Codes 712 Top Carriers Carrier OCN NXX Count WEST IOWA TEL. CO. 1331 1
