Area Code 58 – Leeuwarden
The phone area code for Leeuwarden is 58 (international format +3158). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 58
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Leeuwarden
Geographic Coverage and Administrative Jurisdiction
Area code 58 is a geographic National Destination Code (NDC) assigned to the province of Friesland in the northern Netherlands. The primary city served is Leeuwarden, the provincial capital, which hosts the main administrative, judicial, and cultural institutions. The code covers a broad region including the municipalities of Leeuwarden, Smallingerland (Drachten), Opsterland (Beetsterzwaag), Heerenveen, and Weststellingwerf, among others. This area is characterized by a mix of urban centers and rural communities, all relying on the 58 prefix for fixed-line PSTN and VoIP services.
Dialing Formats and Number Structure
Within the Netherlands, subscribers in the 58 area must dial the full national number, which includes the trunk prefix '0' followed by the area code and the subscriber number. The complete national format is 058-XXXXXXX, where the subscriber number consists of seven digits. For example, a local call to a business in Leeuwarden would be dialed as 058 1234567. When calling from abroad, callers must use the international format: +31 58 1234567, omitting the leading '0'. This format is essential for proper routing through international telecommunication networks.
Overlay and Numbering Plan Considerations
Currently, area code 58 does not have an overlay code; it is the sole geographic code for the region. However, the Netherlands' numbering plan allows for the introduction of overlays if the demand for numbers increases. Subscribers in the 58 area can retain their numbers when switching between fixed-line operators, thanks to number portability regulations. This means that a number with the 58 prefix may be served by any licensed provider, including cable companies offering VoIP services, but the geographic association remains tied to the original location.
Caller Instructions and Usage
For local callers within the 58 area, dialing the full national number is mandatory, even for calls to the same exchange. This is a standard practice in the Netherlands to ensure unambiguous routing. For callers from other parts of the Netherlands, the same national format applies. International callers should replace the '0' with the country code +31. It is important to note that calls to 58 numbers are typically charged at standard fixed-line rates, which may vary depending on the caller's operator and subscription plan. Emergency services (112) are always free and do not require an area code.
Businesses and residents in the 58 region often use these numbers for customer service lines, and many companies publish their numbers in the international format to facilitate overseas communication. When dialing from mobile phones, the same rules apply, and no special prefixes are needed.