Quick answer: +45 is Denmark. Every Danish number has 8 digits after +45. There are no area codes and no 0 to drop. Many mobiles start with 2, but mobiles and landlines can't be reliably told apart by their digits. Example:
+45 20 12 34 56.
How to dial Denmark
| Calling from | Dial |
|---|---|
| Any mobile phone | +45 + 8 digits |
| US or Canada landline | 011 45 + 8 digits |
| UK, Germany, Sweden or Turkey landline | 00 45 + 8 digits |
Denmark has no trunk prefix. The 8 digits are the whole number, inside Denmark and after +45 from abroad. Danes usually write them in pairs, 20 12 34 56. Don't add a 0 in front.
Mobile and landline numbers
Mobiles are 8 digits. Many start with 2, and others start with 3, 4, 5, 6, 7, 8 or 9, mixed in with landline ranges.
Landlines are also 8 digits. Denmark dropped area codes decades ago. The first digits once pointed to a region, but a landline number can now move anywhere in the country, so they no longer tell you where the line is. Numbers starting with 80 are freephone and 90 are premium rate.
Codes that get mixed up with +45
+46 is Sweden and +47 is Norway. Norway also uses 8-digit numbers with no area codes, so a Norwegian number dialed with +45 looks perfectly normal until it reaches the wrong person.
Time difference
Denmark is on Central European Time: UTC+1 in winter and UTC+2 from the last Sunday in March to the last Sunday in October.
| Where you are | Late March to late October | Late October to late March |
|---|---|---|
| US East Coast | Denmark is 6h ahead | Denmark is 6h ahead |
| US West Coast | Denmark is 9h ahead | Denmark is 9h ahead |
| UK | Denmark is 1h ahead all year | |
| Turkey | Denmark is 1h behind | Denmark is 2h behind |
The US changes its clocks two to three weeks before Europe in March and one week after it in autumn. During those weeks the gap is one hour smaller, so a 9 AM call from New York reaches Copenhagen at 2 PM instead of 3 PM.
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FAQ
Do Greenland and the Faroe Islands use +45?
No. Both are part of the Kingdom of Denmark but have their own country codes: +299 for Greenland and +298 for the Faroe Islands. A number there won't connect if you dial it with +45.
Why won't my call to +45 go through?
Check three things: you have exactly 8 digits after +45, you didn't add a 0 in front, and you dialed 45, not 46 or 47.