Europe
SIP Trunk Portugal — +351 Termination & DID Numbers
Lisbon and Porto have become nearshore hubs for multilingual customer service, with agents covering English, French, German and Spanish. Portuguese numbers are nine digits: landlines start with 2 and mobiles with 9.
Overview
Routing calls to Portugal
Whether you are calling a desk phone in Lisbon or a mobile in Braga, Coimbra and Faro, the call is routed by the longest matching +351 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.
There is no trunk prefix to strip: send 351 followed by the national number as written. On the rate sheet, Portugal is split into geographic, national, mobile and toll-free prefixes, following the plan set by ANACOM, so your LCR can tell a cheap fixed-line call from a pricier mobile one.
Outbound termination to Portugal starts as soon as your balance is topped up. Local DIDs are different: ANACOM rules usually require address and identity documents, which our team collects and checks before activation.
What you get
What you get in Portugal
One account and one balance, with the same SBCs for termination and inbound numbers.
CLI route tier
Caller ID delivered end to end on +351 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 +351 prefix is mapped to more than one carrier. Failed attempts move to the next one automatically.
Number formats
How to dial Portugal from your PBX
Send E.164 digits. The sample number below shows the format only.
| Format | Example | Notes |
|---|---|---|
| International (E.164) | +351 21 123 4567 | How the number is written and stored. |
| Sent from your PBX | 351211234567 | E.164 digits with no plus, prefixed by your tech prefix if your account uses one. |
| With 00 exit code | 00 351 21 123 4567 | Accepted on the trunk. We normalise it to E.164. |
| National format | 21 123 4567 | Dialled inside Portugal. There is no trunk prefix. |
Compliance
Portugal rules to know
What applies before your first call or your first DID goes live.
Compliance box
- Regulator
- ANACOM
- 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 number's area.
Rules change — our team confirms current requirements before activation.
Use cases
Who uses Portugal routes
- 01
Multilingual contact centres in Lisbon serving markets across Europe
- 02
Shared service centres in Porto with local and 800 numbers
- 03
Tourism businesses on the Algarve taking calls from abroad
Setup
Start calling Portugal 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 +351
Send 351 + 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
Portugal SIP trunk questions
How are Portuguese numbers structured?
Nine digits. Fixed lines start with 2 (21 Lisbon, 22 Porto) and mobiles with 9.
Is there a trunk prefix?
No. Send 351 followed by the 9-digit number.
Who is the regulator?
ANACOM (Autoridade Nacional de Comunicações).
Do Portuguese DIDs need an address?
Usually yes, along with company or identity documents.
