Reference Data Rate Center Directory DUNBARTON, NH Rate Center DUNBARTON — NH Data last updated: March 10, 2026 LATA 122 State NH Area Codes 1 Exchanges (NXX) 1 Carriers 1 Coordinates 43.102249284414, -71.61638791206751 Area Codes 603 Top Carriers Carrier OCN NXX Count DUNBARTON TEL. CO. 0043 1
