Reference Data Rate Center Directory NOLTL ROCK, MN Rate Center NOLTL ROCK — MN Data last updated: March 10, 2026 LATA 630 State MN Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 43.50072310517948, -95.8786289345499 Area Codes 507 Top Carriers Carrier OCN NXX Count NORTHERN IOWA TEL. CO. 1259 1
