Denmark Phone Number Format
Denmark phone numbers use the country code +45. A Denmark mobile number is 8 digits and is written 34 41 23 45 nationally, or +45 34 41 23 45 in international format. In E.164 (the format APIs expect) it is +4534412345, with no spaces or leading zero.
| Country | Denmark |
|---|---|
| Country calling code | +45 |
| Example mobile (national) | 34 41 23 45 |
| Example mobile (international) | +45 34 41 23 45 |
| Example mobile (E.164) | +4534412345 |
| National number length | 8 digits |
Validate a Denmark phone number
How to format a Denmark phone number
- Start from the national number as written locally: 34 41 23 45.
- Drop the leading trunk digit (the national prefix, usually a leading 0) if present.
- Add the country code +45 in front to dial from abroad: +45 34 41 23 45.
- For APIs, SMS, and storage, use E.164, no spaces or dashes: +4534412345.
Frequently asked questions
What is the country code for Denmark?
The international calling code for Denmark is +45. You add it before the national number (dropping any leading 0) when dialing from abroad, for example +45 34 41 23 45.
How many digits is a Denmark phone number?
A Denmark mobile number has 8 digits in its national significant number (the part after the +45 country code). Example: 34 41 23 45.
How do I write a Denmark number in E.164 format?
E.164 is the international standard most APIs and SMS gateways require: a plus sign, the country code, then the national number with no spaces, dashes, or leading zero. For Denmark that looks like +4534412345.
How can I check if a Denmark phone number is valid?
Paste the number into the validator above. 1Lookup parses it, checks it against Denmark's numbering rules, and returns its line type and carrier so you know whether it is real and reachable.