YO2
Arad (AR), Caras-Severin (CS), Hunedoara (HD), Timis (TM);
YO3
Bucucuresti si sectorul Ilfov (BU);
YO4 
Braila (BR), Constantza (CT), Galatzi (GL),Tulcea (TL), Vrancea (VN);
YO5
Alba (AB), Bihor (BH), Bistritza-Nasaud (BN),Cluj (CJ),Maramures (MM), Satu Mare (SM), Salaj (SJ);
YO6
Brasov (BV), Covasna (CV), Harghita (HR), Mures (MS), Sibiu (SB);
YO7
Arges (AG), Dolj (DJ), Gorj (GJ),Mehedinti (MH), Olt (OT),Vilcea (VL);
YO8
Bacau (BC), Botosani (BT), Iasi (IS), Neamtz (NT), Suceava (SV), Vaslui (VS);
YO9
 Buzau (BZ), Calarasi (CL), Dimbovitza (DB), Giurgiu (GR),Ialomitza (IL), Prahova (PH), Teleorman (TR).