Area Code 35 – Hilversum
The phone area code for Hilversum is 35 (international format +3135). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 35
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Hilversum
Overview of Area Code +31 35
The +31 35 area code is a geographic National Destination Code (NDC) assigned to the Hilversum region in the Netherlands. Hilversum, often referred to as the 'Media City,' is the administrative and cultural hub of the Gooi area in the province of North Holland. The code covers Hilversum itself and several surrounding municipalities, including Bussum, Naarden, Huizen, and Laren. This region is notable for its concentration of broadcasting and media companies, including the headquarters of the Netherlands Public Broadcasting (NPO) and many production studios.
Dialing Formats
When calling a landline in the Hilversum area, the national dialing format is 035-XXXXXXX, where the leading '0' is the national trunk prefix. Internationally, callers must use +31 35 XXXXXXX, omitting the trunk prefix. For example, a local number such as 6123456 would be dialed as 035-6123456 within the Netherlands and as +31 35 6123456 from abroad. The subscriber number length is seven digits, making the total number length (including the NDC) 9 digits, excluding the country code.
Geographic Coverage and Administration
The area code is part of the Dutch numbering plan administered by the Authority for Consumers and Markets (ACM). It is a geographic code, meaning that the number is tied to a physical location and the associated telephone line is typically connected to the PSTN or VoIP services registered to that area. The region falls under the administrative jurisdiction of the province of North Holland, with Hilversum as the principal city. Other key towns within the code include:
- Bussum
- Naarden
- Huizen
- Laren
- Blaricum
Calling Instructions
For local callers within the Netherlands, it is essential to include the '0' trunk prefix when dialing a number in the 035 area from outside the local calling area. However, within the same local area, it may be possible to dial only the seven-digit subscriber number, depending on the operator's dialing plan. For international callers, always replace the leading '0' with the +31 country code. For example, to call a number in Hilversum from the United States, you would dial 011 31 35 XXXXXXX.
Overlay Considerations
Currently, there is no overlay code for the 035 area. Subscribers in the region retain the 035 code, and number portability allows users to keep their numbers when switching providers, even if they move within the same geographic area. However, if a subscriber moves outside the 035 region, they may be required to change their number, as geographic numbers are tied to specific areas.