Reference Data Rate Center Directory DIAMOND CY, AR Rate Center DIAMOND CY — AR Data last updated: March 10, 2026 LATA 528 State AR Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 36.46501056472478, -92.91983965629613 Area Codes 870 Top Carriers Carrier OCN NXX Count NORTHERN ARKANSAS TEL. CO. 1713 1
