Area Code 78 – Dordrecht
The phone area code for Dordrecht is 78 (international format +3178). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 78
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Dordrecht
Overview of Area Code +31 78
The +31 78 country calling code prefix is a geographic area code assigned to the city of Dordrecht and its surrounding municipalities in the province of South Holland, Netherlands. Dordrecht, one of the oldest cities in the country, is located in the delta region where the rivers Meuse and Rhine converge. The area code covers the city proper and neighboring towns such as Zwijndrecht, Papendrecht, Sliedrecht, and Alblasserdam, as well as smaller communities like Hendrik-Ido-Ambacht and 's-Gravendeel.
This numbering area is part of the Netherlands' national numbering plan, which adheres to the ITU-T E.164 standard. The full international dialing format for a subscriber number in Dordrecht is +31 78 XXXX XXX, where the local number consists of seven digits after the area code. When dialing domestically within the Netherlands, callers must use the trunk prefix 0 followed by the area code and subscriber number: 078 XXXX XXX. For international callers, the leading zero is omitted, and the country code +31 is used.
Calling Instructions
- Domestic calls (within the Netherlands): Dial 078 XXXX XXX.
- International calls to Dordrecht: Dial your country's international access code (e.g., 00 from most European countries, 011 from the US/Canada), then 31 78 XXXX XXX.
- International calls from Dordrecht: Dial 00 (the international prefix) followed by the destination country code and the local number.
For example, to call a business in Dordrecht with the local number 612 3456 from abroad, you would dial +31 78 612 3456. From a Dutch landline or mobile, you would dial 078 612 3456.
Geographic Coverage and Administration
The area code 78 is administered under the Dutch telecommunications regulator, the Authority for Consumers and Markets (ACM), which oversees the allocation of numbering resources. The region is served by a mix of traditional PSTN lines, VoIP services, and mobile networks, but the area code remains geographically tied to the Dordrecht region. There are no overlay codes in this area, meaning the 078 prefix is unique to this region.
Dordrecht is a major economic and cultural hub in the Drechtsteden area, with a population of over 118,000. The city is known for its historic harbor and industries such as shipbuilding, metalworking, and logistics. The area code also covers the Port of Dordrecht, one of the largest inland ports in Europe.
For businesses, having a 078 number reinforces a local presence and can be a trust signal for customers in the region. For individuals, it is simply a standard geographic number.