Danh sách vùng
- 8121 SR - Olst, Olst-Wijhe, Overijssel
- 8121 XA - Olst, Olst-Wijhe, Overijssel
- 8121 XB - Olst, Olst-Wijhe, Overijssel
- 8121 XC - Olst, Olst-Wijhe, Overijssel
- 8121 XD - Olst, Olst-Wijhe, Overijssel
- 8121 XE - Olst, Olst-Wijhe, Overijssel
- 8121 XG - Olst, Olst-Wijhe, Overijssel
- 8121 XH - Olst, Olst-Wijhe, Overijssel
- 8121 XJ - Olst, Olst-Wijhe, Overijssel
- 8121 XK - Olst, Olst-Wijhe, Overijssel
- 8121 XL - Olst, Olst-Wijhe, Overijssel
- 8121 XM - Olst, Olst-Wijhe, Overijssel
- 8121 XN - Olst, Olst-Wijhe, Overijssel
- 8121 XP - Olst, Olst-Wijhe, Overijssel
- 8121 XR - Olst, Olst-Wijhe, Overijssel
- 8121 XS - Olst, Olst-Wijhe, Overijssel
- 8121 XT - Olst, Olst-Wijhe, Overijssel
- 8121 ZA - Olst, Olst-Wijhe, Overijssel
- 8121 ZB - Olst, Olst-Wijhe, Overijssel
- 8121 ZC - Olst, Olst-Wijhe, Overijssel