Reference Data Rate Center Directory COLO, IA Rate Center COLO — IA Data last updated: March 10, 2026 LATA 632 State IA Area Codes 1 Exchanges (NXX) 2 Carriers 2 Coordinates 42.01629194185097, -93.31723837869032 Area Codes 641 Top Carriers Carrier OCN NXX Count COLO TEL. CO. 1134 1 T-MOBILE USA, INC. 6529 1
