Elenco di regioni
- 1901 AA - Castricum, Castricum, Noord-Holland
- 1901 AB - Castricum, Castricum, Noord-Holland
- 1901 AC - Castricum, Castricum, Noord-Holland
- 1901 AD - Castricum, Castricum, Noord-Holland
- 1901 AE - Castricum, Castricum, Noord-Holland
- 1901 AG - Castricum, Castricum, Noord-Holland
- 1901 AH - Castricum, Castricum, Noord-Holland
- 1901 AJ - Castricum, Castricum, Noord-Holland
- 1901 AK - Castricum, Castricum, Noord-Holland
- 1901 AL - Castricum, Castricum, Noord-Holland
- 1901 AM - Castricum, Castricum, Noord-Holland
- 1901 AN - Castricum, Castricum, Noord-Holland
- 1901 AP - Castricum, Castricum, Noord-Holland
- 1901 AR - Castricum, Castricum, Noord-Holland
- 1901 AS - Castricum, Castricum, Noord-Holland
- 1901 AT - Castricum, Castricum, Noord-Holland
- 1901 AV - Castricum, Castricum, Noord-Holland
- 1901 AW - Castricum, Castricum, Noord-Holland
- 1901 AX - Castricum, Castricum, Noord-Holland
- 1901 AZ - Castricum, Castricum, Noord-Holland