Area Code 343 – Driebergen-Rijsenburg
The phone area code for Driebergen-Rijsenburg is 343 (international format +31343). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 343
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Driebergen-Rijsenburg
Geographic Coverage and Administrative Jurisdiction
The +31 343 area code is a geographic National Destination Code (NDC) assigned to the Utrecht region of the Netherlands, specifically serving the municipality of Driebergen-Rijsenburg and its immediate surroundings. This area falls under the province of Utrecht, centrally located in the country. The code covers the town of Driebergen-Rijsenburg itself, as well as nearby localities such as Doorn, Maarn, and parts of the Utrechtse Heuvelrug ridge. As a geographic code, it is tied to the PSTN (Public Switched Telephone Network) infrastructure of this specific region, and calls to numbers with this prefix are routed based on their physical location.
Dialing Formats and Instructions
For callers within the Netherlands, the national trunk prefix '0' is used before the area code, resulting in the format 0343-XXXXXXX. The local number length after the area code is typically 7 digits, making the full national number 10 digits (0 + 9 digits). For international callers, the country code +31 is used, and the leading '0' is dropped, resulting in the format +31 43-XXXXXXX (note: the area code is '343', but when dialed internationally, the '0' is omitted, so the number appears as +31 343 XXXXXXX, but the local number is 7 digits, so the complete international format is +31 343 XXXXXXX).
Example: A local number in Driebergen-Rijsenburg might be 0343 5123456. To call this from abroad, you would dial +31 343 5123456.
Overlay and Numbering Plan Considerations
Currently, there is no overlay code for the 343 area code, meaning that local calls within the region can be made using the 7-digit subscriber number without the area code, provided both parties are within the same geographic area. However, due to the increasing demand for telecommunication services, the Netherlands has implemented number portability, allowing subscribers to retain their numbers when switching providers, even if they move outside the original geographic area. This means that a number with the 343 prefix might not always be physically located in Driebergen-Rijsenburg, but the prefix remains associated with the original geographic allocation.
Caller Instructions
- Local callers (within 343 area): Dial the 7-digit subscriber number directly (e.g., 5123456).
- National callers (outside 343 area): Dial 0343 followed by the 7-digit subscriber number (e.g., 0343 5123456).
- International callers: Dial +31 343 followed by the 7-digit subscriber number (e.g., +31 343 5123456).
It is important to note that when calling from a mobile phone within the Netherlands, it is standard practice to always use the full national number (including the trunk prefix '0') to ensure proper routing, regardless of the caller's location.