Area Code 223 – Den Helder
The phone area code for Den Helder is 223 (international format +31223). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 223
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Den Helder
Geographic Overview
The +31 223 country calling code and area code combination corresponds to the geographic region of Den Helder, a municipality and city located in the province of North Holland, Netherlands. This area code serves the northernmost point of the North Holland peninsula, including the city of Den Helder itself, as well as surrounding towns and villages such as Julianadorp, Huisduinen, and De Kooy. The region is known for its strategic naval base, ferry connections to the Wadden Islands (Texel), and its coastal landscape.
Dialing Formats
When dialing a number in the Den Helder area, the national subscriber number length is typically 7 digits, excluding the trunk prefix '0'. The full international dialing format is +31 223 XXX XXX (where X represents the local subscriber digits). Within the Netherlands, callers must use the trunk prefix '0' before the area code, resulting in the national format 0 223 XXX XXX. For example, a local number might be +31 223 123 456, which would be dialed as 0223 123 456 from within the Netherlands.
Caller Instructions
For local callers (within the Netherlands): To call a number in Den Helder from another region, dial the national trunk prefix '0', followed by the area code '223', and then the 7-digit subscriber number. If you are calling from within the same area code, you may be able to dial only the subscriber number, depending on your local exchange, but it is always safe to include the area code.
For international callers: Dial the international access prefix (e.g., '00' from most countries, or '+' from mobile phones), followed by the Netherlands country code '31', then the area code '223' (without the leading '0'), and finally the 7-digit subscriber number. For example, from the United States, you would dial 011 31 223 123 456.
Regulatory and Technical Notes
This is a geographic number, meaning it is tied to a physical location and is primarily used for fixed-line services. However, number portability allows subscribers to retain their number when switching providers, including to VoIP or mobile services, so the geographic association may not always reflect the actual location of the device. The Netherlands' numbering plan is administered by the Authority for Consumers and Markets (ACM), and area codes are assigned according to ITU-T E.164 recommendations. The 223 area code is part of the North Holland numbering region and is not subject to overlay codes at present.