Virtual phone numbers from Denmark
Get your own "telefonnummer" in Denmark.
National numbers $2.95/month · Mobile numbers $9.95/month · Toll-free numbers $5.95/month + per-minute incoming + $7.00 setup
Use any device or software
Any device can be used to make and receive calls with your FlyNumber.
- Any SIP or VoIP app on iOS or Android
- Mac, PC, or Linux computer
- Desktop office phone
- Any regular phone number (to receive calls)
- Any VoIP solution (e.g. Asterisk, 3CX, 3rd party VoIP)
Choose from 4 powerful ways to use your FlyNumber
1.) Use FlyNumber SIP to make and receive calls
- Make and receive calls with your Denmark number in any SIP calling app from the app stores — Zoiper, Groundwire, Linphone and more — or on a desk phone. We help you set it up.
- Incoming calls are included in the number's monthly rate; outgoing calls are billed per minute from your prepaid balance, with your Denmark FlyNumber as the caller ID.
- Register up to 5 devices, with voicemail built in.
- Pick your own Denmark number when ordering — search by digits or letters.
2.) Let an AI voice agent answer your Denmark calls
With Call Handling set to AI voice agent answers, a built-in agent picks up your Denmark number. It answers questions from what you tell it, takes messages and transfers callers to you.
You write its rules in plain language in your panel: a "When…" sentence plus one action, like "When the caller wants a callback, take a message."
$0.10 per minute of AI conversation, billed per second. No monthly fee for the agent.
3.) Forward the Denmark phone calls to any standard phone number worldwide
- For a low per min rate you can forward the Denmark calls to any regular phone number in the world.
- You'll see the caller ID of the person calling your Denmark FlyNumber on the phone you're forwarding to.
- Change the forwarding number anytime via the FlyNumber panel.
- Consider our optional cloud phone system to enhance call forwarding options.
4.) Set the Denmark number directly to VoIP
- Set the Denmark number directly to a SIP/VoIP address.
- We'll send the Denmark calls to a VoIP destination for free (unlimited minutes).
- High level call logs to help diagnose/debug any issues.
- Use any 3rd party VoIP provider or your own PBX system (Asterisk, FreePBX, 3CX, etc.)
- In your FlyNumber panel this is the Forward to SIP / VoIP Address option.
Note
Switch between them any time from your FlyNumber panel. Two more settings live there: Park the Number, which stops the number ringing anywhere (callers hear busy) with no call charges, and the optional cloud phone system, $14.95 a month for voice menus, ring groups and business hours.
FlyNumber’s stand-out features
- Manage costs with charges per phone number, not per user.
- Port Denmark phone numbers easily, in or out.
- Unlimited incoming VoIP minutes for Denmark calls.
- Modify forwarding settings anytime via the user panel.
Registration Requirements
- Mobile
There are no special registration requirements for Mobile, Denmark phone numbers.
- National
Personal: name and contact phone number. Business: add company name. Address can be from anywhere in the world.
- Toll-free
Personal: full name and contact number. Business: add company name. Address can be from anywhere in the world.
Porting Your Existing Number to FlyNumber
Already have a Danish phone number? You can transfer (port) it to FlyNumber and keep using the same number with all our features.
We support porting for national and toll-free Danish numbers. You'll typically need:
- A recent invoice from your current provider
- Valid ID (passport or national ID)
- For business numbers: company CVR number and registration documents
- Danish address (for national numbers)
When you're ready, submit the port request from your FlyNumber panel — download the LOA there, then upload the signed LOA and a recent bill. We handle the carrier side and keep you posted. Porting your number in is free.
Interested in porting? Learn more about porting or get in touch and we'll guide you through it.
Example use cases
Marketing campaign tracking
Track which ads drive calls by using unique numbers for campaigns across Copenhagen, Odense, and beyond.
Real estate listings
Assign each property its own number to manage inquiries and track interest per listing.
Privacy on DBA or GulogGratis
Keep your personal number private when selling items on Danish online marketplaces.
Stay connected while traveling
Keep a Danish number active abroad so family and clients can reach you at local rates.
Budget-friendly business line
Project a professional local presence without the cost of traditional phone lines.
Call like a local, pay like a local
In many cases if you make outgoing calls to a Denmark phone number using a Denmark FlyNumber as the caller-ID the rate is significantly cheaper.
- The rate is sometimes 10x cheaper so if you call a certain country often, it pays to get a FlyNumber from there.
- Anytime you make outgoing calls with FlyNumber (via FlyNumber SIP or the optional phone system) there is a low per minute rate.
- You can make outgoing calls with FlyNumber SIP or from the optional phone system.
- More details on the phone system billing can be found in our docs.
General technical details on Denmark numbers
- Country code is +45; numbers are 8 digits long.
- Dial locally by dialing the 8-digit number directly, no area code needed.
- Country code +45 introduced in 1960; uniform 8-digit format standardized later.
FAQs
Can I use a Denmark FlyNumber to forward calls to my existing phone in another country?
Yes, with FlyNumber, you can forward your Denmark number to any standard phone worldwide. Caller ID of the original caller is displayed, and you can manage forwarding via the FlyNumber panel.
How can I manage incoming calls to my Denmark virtual number?
The cloud-based phone system allows you to configure call flows on a digital grid. You can set day/time routing, call recording, and use features like IVR to manage calls.
Is it possible to use my Denmark FlyNumber for outgoing calls?
Yes, you can make outgoing calls using your Denmark number as the caller ID — with FlyNumber SIP or the optional cloud phone system.
Will I be able to integrate my Denmark FlyNumber with existing VoIP setups?
Absolutely, FlyNumber allows you to set the Denmark number directly to a VoIP/SIP address, providing compatibility with any VoIP solution supporting the SIP protocol.
Are there unlimited incoming minutes for my Denmark virtual number?
When you set your Denmark number to a VoIP/SIP address, you get unlimited incoming minutes with two free incoming channels, which is ideal for business needs.
Denmark forum topics
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