The Area Codes of Ukraine: City/Town or RegionArea code 1.Obukhiv4572 (+380 4572) 2.Ochakiv5154 (+380 5154) 3.Odessa48 (+380 48) 4.Okhtyrka5446 (+380 5446) 5.Okny4861 (+380 4861) 6.Oleksandrivka5242 (+380 5242) 7.Oleksandrivka6269 (+380 6269) 8.Oleksandrivsk642 (+380 642) 9.Oleksandriya5235 (+380 5235) 10.Olevsk4135 (+380 4135) 11.Onufriyivka5238 (+380 5238) 12.Orativ4330 (+380 4330) 13.Ordzhonikidze5667 (+380 5667) 14.Orikhiv6141 (+380 6141) 15.Orzhytsia5357 (+380 5357) 16.Ostroh3654 (+380 3654) 17.Ovidiopol4851 (+380 4851) 18.Ovruch4148 (+380 4148)