Area Code 73 – 's-Hertogenbosch
The phone area code for 's-Hertogenbosch is 73 (international format +3173). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 73
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📍 Geographic Location of 's-Hertogenbosch
Geographic Coverage and Administrative Jurisdiction
The +31 73 area code is a geographic National Destination Code (NDC) assigned to the city of 's-Hertogenbosch (also known as Den Bosch) and its surrounding municipalities in the province of North Brabant, Netherlands. This includes key localities such as Vught, Sint-Michielsgestel, Boxtel, and Rosmalen. As a geographic code, it is tied to the PSTN infrastructure serving this region, and numbers under this prefix are allocated to fixed-line services, including residential, business, and public sector lines.
Dialing Formats and Caller Instructions
For local callers within the Netherlands, the area code is dialed with a leading zero: 073. The subscriber number is typically 7 digits long, making the complete national format 073-XXXXXXX. When calling from abroad, the international prefix is used, the leading zero is dropped, and the country code +31 is added, resulting in +31 73 XXXXXXX. For example, a fixed-line number in 's-Hertogenbosch might be formatted as +31 73 123 4567 internationally, or 073-1234567 domestically.
Overlay and Numbering Plan Considerations
Currently, the 073 area code does not have an overlay with another NDC. The Netherlands' numbering plan, regulated by the Authority for Consumers and Markets (ACM), maintains a closed dialing plan for fixed-line calls, meaning that the full national number (including the area code) must be dialed even for local calls. This ensures unambiguous routing across the country. The number length under 073 is standardized at 10 digits (including the leading zero) for national dialing, and 9 digits after the country code for international dialing.
Practical Usage and Routing
Geographic numbers under 073 are primarily used for fixed-line voice and fax services. They are also commonly used for business lines that wish to establish a local presence in the region. In recent years, many businesses have adopted VoIP-based fixed-line services, but the geographic NDC remains associated with the 's-Hertogenbosch area. Callers from other regions in the Netherlands must dial the full national number, while international callers should use the +31 73 format. It is important to note that numbers under this code are not portable to other geographic areas, but they can be ported between operators within the same rate center, subject to ACM regulations.