Connecting with someone in the Netherlands requires a specific sequence of codes, an understanding of regional prefix rules, and a firm grasp of the trunk zero drop. If you try to dial a local Dutch number directly from North America or another country without reformatting it, your call will fail instantly.
To call the Netherlands from North America, you dial your international exit code (011), the Dutch country code (31), the local area or mobile code without its leading zero, and finally the subscriber number. For mobile phones, you can replace the exit code with the + sign by holding down the zero key, turning the sequence into +31 followed by the remaining digits.
Mastering this dialing process takes more than memorizing a single string of numbers. Let's break down the exact sequences, format rules, and common mistakes that break international connections.
The Core Anatomy of a Dutch Phone Number
Every phone number in the Netherlands relies on a standardized numbering plan managed by The Authority for Consumers and Markets. Unlike some nations where area codes vary wildly in length, Dutch geographic and mobile numbers follow a rigid length structure once dialed internationally.
When looked at locally, numbers include a trunk prefix—almost always a leading zero. When you call from outside the country, that zero must be stripped away.
- Country Code:
+31 - North American Exit Code:
011 - European and Global Exit Code:
00 - Mobile Prefix: Starts with
06locally, becomes+31 6internationally.
Landlines Versus Mobiles
The rules change slightly depending on whether you're targeting a fixed office line in Rotterdam or a mobile phone on the go.
For geographic landlines, the area code identifies the city. For instance, Amsterdam uses 020, Rotterdam uses 010, and The Hague uses 070. Domestically, you dial 020 XXXXXXX. Internationally from Canada or the US, you drop that initial zero and dial 011 31 20 XXXXXXX.
Mobiles always begin with 06 within the Netherlands, followed by eight digits. Drop the leading zero and dial 011 31 6 XXXXXXXX from North America, or +31 6 XXXXXXXX from a mobile device anywhere in the world.
Step-by-Step Dialing Instructions
Executing the call correctly depends entirely on where you are calling from and the device you use.
1. Dialing from North America (US and Canada)
If you are sitting in Toronto or New York trying to reach a business partner in Utrecht:
- Dial the international exit code:
011 - Dial the Netherlands country code:
31 - Dial the local area or mobile code, omitting the first zero. (e.g., Utrecht's code
030becomes30) - Dial the remaining subscriber number.
2. Dialing from Europe and Most of the World
If you are calling from the UK, Germany, or another European country:
- Dial the international exit code:
00 - Dial
31 - Enter the area code without the leading zero.
- Enter the local subscriber number.
3. The Smartphone Shortcut
You don't need to memorize country-specific exit codes if you use a mobile phone. Press and hold the 0 key until a + sign appears. Follow this immediately with 31, the area code (minus the zero), and the local digits. This works globally, whether you're roaming in Asia, calling from South America, or dialing from home.
Common Dialing Mistakes to Avoid
Even seasoned travelers stumble when dialing across borders. Watch out for these frequent errors:
- Leaving the trunk zero in place: The number one reason international calls fail is retaining the first zero. If you dial
011 31 020 1234567, the Dutch switching network will reject the call because of the extra zero inside the city code. - Confusing time zones: The Netherlands operates on Central European Time (CET), shifting to Central European Summer Time (CEST) from the last Sunday in March to the final Sunday in October. Calling during night hours in Amsterdam leads to missed connections.
- Saving contacts improperly: Always save international contacts in E.164 format (
+31...) inside your digital address book. If you save a Dutch client's number as020 123 4567, the phone won't know how to route it when you travel abroad or switch carriers.
Special Service and Non-Geographic Numbers
Not all Dutch numbers are tied to a physical desk or a handheld phone. Special prefixes serve businesses, toll-free lines, and automated equipment.
- Toll-Free Numbers: Numbers starting with
0800are toll-free within the Netherlands. However, most0800numbers cannot be reached from outside the country unless the hosting provider has set up specific international routing gateways. - Shared Cost and Business Lines: Numbers beginning with
088or085are widely used by nationwide businesses and VoIP networks. They follow the same international dropping rule: dial+31 88or+31 85from abroad. - Machine-to-Machine Numbers: The
+31 97range handles automated IoT devices, smart utility meters, and fleet trackers rather than human callers.
Frequently Asked Questions
What is the country code for the Netherlands?
The international country code is +31. You must enter this code after your local exit prefix whenever you call a Dutch landline or mobile from another country.
Do I always drop the first zero of a Dutch phone number?
Yes, when calling from outside the Netherlands, you drop the leading zero (the trunk code) from the area or mobile prefix. For example, a local number starting with 020 becomes +31 20.
How do I write a Dutch mobile number for international use?
Write it in standard E.164 format. Drop the zero from the 06 mobile prefix and prefix the whole string with the country code, resulting in +31 6 followed by the 8-digit subscriber number.
Can I call Dutch toll-free numbers from North America?
Generally, no. Standard 0800 numbers are restricted to domestic callers within the Netherlands. To reach a Dutch company from abroad, you must use their standard geographic office number or a designated international support line.
