Seznam oblastí
- 1901 RM - Castricum, Castricum, Noord-Holland
- 1901 RN - Castricum, Castricum, Noord-Holland
- 1901 RP - Castricum, Castricum, Noord-Holland
- 1901 RR - Castricum, Castricum, Noord-Holland
- 1901 RS - Castricum, Castricum, Noord-Holland
- 1901 RT - Castricum, Castricum, Noord-Holland
- 1901 RV - Castricum, Castricum, Noord-Holland
- 1901 RW - Castricum, Castricum, Noord-Holland
- 1901 RX - Castricum, Castricum, Noord-Holland
- 1901 RZ - Castricum, Castricum, Noord-Holland
- 1901 SB - Castricum, Castricum, Noord-Holland
- 1901 SC - Castricum, Castricum, Noord-Holland
- 1901 SE - Castricum, Castricum, Noord-Holland
- 1901 SG - Castricum, Castricum, Noord-Holland
- 1901 SH - Castricum, Castricum, Noord-Holland
- 1901 SJ - Castricum, Castricum, Noord-Holland
- 1901 SK - Castricum, Castricum, Noord-Holland
- 1901 SL - Castricum, Castricum, Noord-Holland
- 1901 SM - Castricum, Castricum, Noord-Holland
- 1901 SN - Castricum, Castricum, Noord-Holland