+31 is the country code for the Netherlands.
Every phone number in the Netherlands starts with +31 when you call it from another country. From the US, dial 011 31, then the number without its first 0.
- Time there
- Amsterdam timeCentral European Time, UTC+1 to UTC+2
- From the US or Canada
- 011 31 6 12345678
- From the UK and most of Europe
- 00 31 6 12345678
- From Australia
- 0011 31 6 12345678
- From any mobile phone
- +31 6 12345678
- Inside the Netherlands
- 06 12345678
- Mobile numbers
- 9 to 11 digits after +31, starting 61, 62, 63, 64, 65, 68 or 97
- Landlines
- 9 digits after +31, such as +31 10 XXX XXXX in Rotterdam
- Toll-free numbers
- Start with 0800
Check a +31 number to see whether it is a mobile, a landline or VoIP.
Pick the country, enter the number without the +31, and the free check shows whether it is valid and whether it is a mobile, a landline or VoIP.
Mobile numbers in the Netherlands start with 61, 62, 63, 64, 65, 68 or 97, and this table shows which networks first issued each start.
| At home | From abroad | First issued by |
|---|---|---|
| 061 | +31 61 | Vodafone Libertel B.V., KPN, T-Mobile |
| 062 | +31 62 | KPN, Vodafone Libertel B.V., T-Mobile |
| 063 | +31 63 | KPN, ASPIDER Solutions Nederland B.V., Vodafone Libertel B.V. |
| 064 | +31 64 | T-Mobile, KPN, Tele2 |
| 065 | +31 65 | KPN, Vodafone Libertel B.V., T-Mobile |
| 068 | +31 68 | Lycamobile, KPN, Vodafone Libertel B.V. |
People keep their number when they switch networks, so the start shows where a number began. Our free number portability lookup shows the network it is on today.
Landline area codes in the Netherlands start with 010 for Rotterdam, and the table lists 60 of the places they cover.
| At home | From abroad | Area |
|---|---|---|
| 010 | +31 10 | Rotterdam |
| 013 | +31 13 | Tilburg |
| 015 | +31 15 | Delft |
| 020 | +31 20 | Amsterdam |
| 023 | +31 23 | Haarlem |
| 024 | +31 24 | Nijmegen |
| 026 | +31 26 | Arnhem |
| 030 | +31 30 | Utrecht |
| 033 | +31 33 | Amersfoort |
| 035 | +31 35 | Hilversum |
| 036 | +31 36 | Almere |
| 038 | +31 38 | Zwolle |
| 040 | +31 40 | Eindhoven |
| 043 | +31 43 | Maastricht |
| 045 | +31 45 | Heerlen |
| 046 | +31 46 | Sittard |
| 050 | +31 50 | Groningen |
| 053 | +31 53 | Enschede |
| 055 | +31 55 | Apeldoorn |
| 058 | +31 58 | Leeuwarden |
| 070 | +31 70 | The Hague |
| 071 | +31 71 | Leiden |
| 072 | +31 72 | Alkmaar |
| 073 | +31 73 | 's-Hertogenbosch |
| 074 | +31 74 | Hengelo |
| 075 | +31 75 | Zaandam |
| 076 | +31 76 | Breda |
| 077 | +31 77 | Venlo |
| 078 | +31 78 | Dordrecht |
| 079 | +31 79 | Zoetermeer |
| 0111 | +31 111 | Zierikzee |
| 0113 | +31 113 | Goes |
| 0114 | +31 114 | Hulst |
| 0115 | +31 115 | Terneuzen |
| 0117 | +31 117 | Oostburg |
| 0118 | +31 118 | Middelburg |
| 0161 | +31 161 | Rijen |
| 0162 | +31 162 | Oosterhout |
| 0164 | +31 164 | Bergen op Zoom |
| 0165 | +31 165 | Roosendaal |
| 0166 | +31 166 | Tholen |
| 0167 | +31 167 | Steenbergen |
| 0168 | +31 168 | Zevenbergen |
| 0172 | +31 172 | Alphen aan den Rijn |
| 0174 | +31 174 | Naaldwijk |
| 0180 | +31 180 | Barendrecht |
| 0181 | +31 181 | Spijkenisse |
| 0182 | +31 182 | Gouda |
| 0183 | +31 183 | Gorinchem |
| 0184 | +31 184 | Sliedrecht |
| 0186 | +31 186 | Oud-Beijerland |
| 0187 | +31 187 | Middelharnis |
| 0222 | +31 222 | Den Burg |
| 0223 | +31 223 | Den Helder |
| 0224 | +31 224 | Schagen |
| 0226 | +31 226 | Noord Scharwoude |
| 0227 | +31 227 | Medemblik |
| 0228 | +31 228 | Enkhuizen |
| 0229 | +31 229 | Horn |
| 0251 | +31 251 | Beverwijk |
Showing 60 of 141 area codes.
In the Netherlands, the phone number format for apps and SMS gateways is +31 followed by the number without its 0.
| Written | Example | Where you see it |
|---|---|---|
| At home | 06 12345678 | Business cards, local ads |
| International | +31 6 12345678 | Websites, email signatures |
| E.164 | +31612345678 | APIs, SMS gateways, CRMs |
A missed call from a +31 number you don't know can be a one-ring scam, so check it before calling back.
One-ring scams call once and hang up, hoping you call back a line that bills you international or premium rates.
- Don't call back an international number you don't know. A real caller leaves a message or sends a text.
- Check the number in the box above. A number that is not a working mobile or landline in the Netherlands is a warning sign.
- Hang up on anyone who wants gift cards, crypto or a wire transfer, or asks you to read out a code that was just texted to you.
- Report it at reportfraud.ftc.gov, and see the FCC's guide to one-ring scams.
The codes next to +31 belong to other countries, so one wrong digit reaches a different place.
These are the questions people ask most about +31.
Which country uses the +31 country code?
Netherlands. Every phone number there starts with +31 when it is dialed from abroad.
How do I call the Netherlands from the US?
Dial 011, then 31, then the number without its first 0. A mobile number written 06 12345678 at home is dialed 011 31 6 12345678 from the US, or +31 6 12345678 from any mobile phone.
Is +31 the same as 0031?
Yes. 00 is the exit code used in the Netherlands and most of the world, and the + on a mobile phone stands in for whatever exit code your network uses. From the US and Canada the exit code is 011 instead.
How many digits is a phone number in the Netherlands?
A mobile number has 9 to 11 digits after +31, written 06 12345678 at home. A landline has 9 digits, written 010 XXX XXXX at home.
What time is it in the Netherlands?
The Netherlands is on Central European Time, UTC+1 in winter and UTC+2 in summer.
How do I check a +31 number that called me?
Enter it in the box above. The free check shows whether it is a valid number from the Netherlands and whether it is a mobile, a landline or a VoIP line, which helps you spot a one-ring scam before you call back.
Sources: Google's libphonenumber numbering data for lengths, mobile starts, area code places, first-issuing networks and time zones, as of September 24, 2026; the ITU list of country codes.