Europe
SIP Trunk Switzerland — +41 Termination & DID Numbers
Switzerland is outside the EU but just as strict on numbering, and many firms run German, French and Italian lines from one office. Zurich (044), Geneva (022) and Basel (061) are the most requested area codes for business DIDs.
Overview
Routing calls to Switzerland
Calling windows matter: Switzerland runs on Zurich time, and we route +41 calls for Zurich, Geneva and Basel, Bern and Lausanne across several carriers so a peak-hour congestion event on one network does not take your campaign down.
Numbering in Switzerland is managed by OFCOM (Switzerland). We terminate to geographic, national, mobile and toll-free ranges and price each one separately on the rate sheet. Inside the country, numbers are dialled with a 0 trunk prefix. Strip it before you send the call, and send 41 followed by the national number.
Outbound termination to Switzerland starts as soon as your balance is topped up. Local DIDs are different: OFCOM (Switzerland) rules usually require address and identity documents, which our team collects and checks before activation.
What you get
What you get in Switzerland
One account and one balance, with the same SBCs for termination and inbound numbers.
CLI route tier
Caller ID delivered end to end on +41 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, National, 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 +41 prefix is mapped to more than one carrier. Failed attempts move to the next one automatically.
Number formats
How to dial Switzerland from your PBX
Send E.164 digits. The sample number below shows the format only.
| Format | Example | Notes |
|---|---|---|
| International (E.164) | +41 44 123 45 67 | How the number is written and stored. |
| Sent from your PBX | 41441234567 | E.164 digits with no plus, prefixed by your tech prefix if your account uses one. |
| With 00 exit code | 00 41 44 123 45 67 | Accepted on the trunk. We normalise it to E.164. |
| National format | 044 123 45 67 | Dialled inside Switzerland. Strip the trunk prefix before sending. |
Compliance
Switzerland rules to know
What applies before your first call or your first DID goes live.
Compliance box
- Regulator
- OFCOM (Switzerland)
- 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 require a Swiss address and company or identity documents.
Rules change — our team confirms current requirements before activation.
Use cases
Who uses Switzerland routes
- 01
Private banks and wealth managers in Zurich and Geneva needing local CLIs
- 02
Multilingual German/French/Italian customer service lines
- 03
International organisations in Geneva connecting to a central PBX
Setup
Start calling Switzerland 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 +41
Send 41 + national number in E.164 and check the CDR for your first test call.
Further reading: What Is a SIP Trunk? A Plain-English Guide for 2026
FAQ
Switzerland SIP trunk questions
Who regulates Swiss numbering?
OFCOM, the Federal Office of Communications, which is not the UK regulator of the same name.
Do Swiss DIDs need a Swiss address?
Usually yes, with company registration or identity documents.
How do I format a Zurich number?
+41 44 followed by 7 digits. Drop the leading 0 from the trunk.
Are Swiss mobile rates higher?
Yes. Swiss mobile termination is among the more expensive in Europe and is listed separately on the rate sheet.
