Area Code 345 – Culemborg
The phone area code for Culemborg is 345 (international format +31345). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 345
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Culemborg
Geographic Overview
The +31 345 area code is a geographic National Destination Code (NDC) assigned to the Culemborg telephone exchange area in the Netherlands. Culemborg is a municipality and city in the province of Gelderland, situated along the Lek River, approximately 15 kilometers southeast of Utrecht. The service area encompasses the city of Culemborg itself and the surrounding rural communities, including the buurtschappen (hamlets) of Goilberdingen and Zijderveld. The code is allocated under the Dutch numbering plan administered by the Authority for Consumers and Markets (ACM), following ITU-T E.164 recommendations.
Dialing Formats
Within the Netherlands, calls to numbers in the 345 area require dialing the trunk prefix '0' followed by the area code and the subscriber number. The national format is: 0345 XX XX XX (or 0345 XXX XXX, depending on the subscriber number length). For international callers, the country code +31 replaces the leading '0', resulting in the format: +31 345 XX XX XX. For example, a local Culemborg number might be 0345 12 34 56, which would be dialed as +31 345 12 34 56 from abroad.
Local and International Calling Instructions
- Local callers (within the 345 area): In the Netherlands, local calls within the same area code do not require the area code. However, due to the relatively small size of the exchange area, most callers dial the full national number (0345) even for local calls, as this is standard practice across the country.
- National callers (outside the 345 area): Dial 0345 followed by the subscriber number.
- International callers: Dial the international access prefix (e.g., 00 from most countries, or '+' from mobile phones), then the country code 31, then the area code 345 (without the leading 0), and then the subscriber number.
Numbering and Overlay Considerations
Subscriber numbers within the 345 area code typically have a length of 6 or 7 digits, making the total national significant number (NSN) 9 or 10 digits, including the leading '0'. As of the current numbering plan, there is no overlay code for Culemborg; the 345 code is exclusively used for this geographic area. However, number portability allows subscribers to retain their numbers when switching providers, which may result in some numbers assigned to the 345 code being served by exchanges outside the traditional geographic area.
Services and Usage
The 345 area code serves both residential and business customers, providing standard PSTN and VoIP services. It is also used for ISDN and xDSL services. The region is known for its historic city center and is part of the Randstad's broader economic influence, with many residents commuting to Utrecht and other major cities.