Europe
SIP Trunk Denmark — +45 Termination & DID Numbers
Danish numbers are a flat eight digits with no area codes, so a Copenhagen number and an Aarhus number look exactly alike. That keeps dial plans simple, but you cannot infer location from the number, which matters if you route by region.
Overview
Routing calls to Denmark
Whether you are calling a desk phone in Copenhagen or a mobile in Odense, Aalborg and Esbjerg, the call is routed by the longest matching +45 prefix and sent to the best-performing carrier for that range. When a carrier fails, the next one takes over, and the CDR shows exactly which leg carried the call.
The national telecom regulator sets the Denmark numbering plan, and our prefix tables follow it closely. Supported number types: geographic, mobile and toll-free. There is no trunk prefix to strip: send 45 followed by the national number as written.
For inbound numbers in Denmark, plan on paperwork: proof of address and company or identity documents are usually required before a DID goes live. Termination needs no documents beyond normal account checks.
What you get
What you get in Denmark
One account and one balance, with the same SBCs for termination and inbound numbers.
CLI route tier
Caller ID delivered end to end on +45 calls. Use it for sales, support and any traffic where answer rates matter.Non-CLI route tier
A lower-cost tier where caller ID delivery is not guaranteed. Suitable for internal or transactional traffic that does not depend on the CLI.Number types
Geographic, Mobile, Toll-free. DID availability varies by range and city.Codecs
G.711a/u and G.729 on every route, G.722 and Opus where the far end supports them. T.38 for fax.Channels on demand
Concurrent call limits are set per account and raised as your traffic grows. No fixed channel bundles.Multi-carrier failover
Every +45 prefix is mapped to more than one carrier. Failed attempts move to the next one automatically.
Number formats
How to dial Denmark from your PBX
Send E.164 digits. The sample number below shows the format only.
| Format | Example | Notes |
|---|---|---|
| International (E.164) | +45 32 12 34 56 | How the number is written and stored. |
| Sent from your PBX | 4532123456 | E.164 digits with no plus, prefixed by your tech prefix if your account uses one. |
| With 00 exit code | 00 45 32 12 34 56 | Accepted on the trunk. We normalise it to E.164. |
| National format | 32 12 34 56 | Dialled inside Denmark. There is no trunk prefix. |
Compliance
Denmark rules to know
What applies before your first call or your first DID goes live.
Compliance box
- Regulator
- The national telecom regulator
- Caller ID
- A valid CLI that you are entitled to use is required on CLI routes. Spoofed or unallocated numbers are blocked.
- DID KYC
- Usually required
- Note
- Geographic DIDs usually need a local address or proof of presence in the country.
Rules change — our team confirms current requirements before activation.
Use cases
Who uses Denmark routes
- 01
Scandinavian support teams with Copenhagen numbers
- 02
Shipping and logistics firms in Esbjerg and Aarhus on one trunk
- 03
80 freephone numbers for national hotlines
Setup
Start calling Denmark in 3 steps
- 01
Top up $200
Open a prepaid account and add balance by USDT (TRC20), BTC or card. - 02
Add your trunk
Whitelist your PBX IP or create digest credentials, then point your outbound route at our SBC. - 03
Dial +45
Send 45 + national number in E.164 and check the CDR for your first test call.
Further reading: CLI vs Non-CLI Routes: What Actually Changes for Your Calls
FAQ
Denmark SIP trunk questions
Are there area codes in Denmark?
No. All numbers are 8 digits. Send 45 + 8 digits.
What is the Danish freephone range?
Freephone numbers start with 80.
Who regulates Danish telecoms?
The national telecom regulator. Our team confirms current requirements before activation.
Do Danish DIDs need documents?
Usually: a Danish address or CVR company number.
