Ukraine
Regional » Telephone Country Codes
Ohio - Central (not active)
Regional » US Phone Area Codes
37F - 37I - 37K - 37M - 37N - 37OA - 37OC - 37QB - 37T - 37V - 37W - 37ZL - 37ZM - 38001 - 38002 - 38004 - 38006 - 38007 - 38008 - 38010 - 38011 - 38012 - 38014 - 38015 - 38016 - 38017