Regiocodes:
| 019 | ALM | Almere |
| 001 | AMS | Amsterdam |
| 014 | APD | Apeldoorn |
| 999 | BTL | Buitenland |
| 018 | FRY | Fryslân |
| 017 | GRN | Groningen |
| 027 | YSS | IJssellanden |
| 021 | KEN | Kennemerland |
| 009 | MBR | Midden Brabant |
| 012 | MZL | Midden Zuid Limburg |
| 025 | NEN | Noordoost-Brabant en Nijmegen |
| 010 | NLI | Noord Limburg |
| 020 | NWE | Noordwest |
| 015 | TWN | Twente |
| 006 | UTR | Utrecht |
| 029 | VLA | Vlaanderen |
| 008 | WBR | West Brabant |
| 028 | ZDR | Zuid-Drenthe |
| 030 | ZHL | Zuid-Holland |
| 007 | ZLD | Zeeland |
| 011 | ZOB | Zuidoost-Brabant |
Interessegroepcodes:
| AF | Artificiele intelligentie |
| AN | Android |
| AP | Apple |
| BE | Beleggen |
| CP | Commodore |
| CU | CompUsers |
| DD | 3D |
| DM | FotoVideo |
| DO | Domotica-IoT |
| DR | Drones |
| FO | Forth |
| FS | Flightsimulator |
| GA | Games |
| GE | Genealogie |
| HN | Hobbynet |
| MO | Modelbaanautomatisering |
| MX | MSX |
| OP | Opensource |
| OS | eCS |
| PR | Programmeren |
| PZ | Postzegel |
| RB | Robotica |
| RT | Retro |
| SR | SeniorenAcademie |
| TB | Testbank |
| TS | Trainsim |
| WI | Windows |