Europe

SIP Trunk Finland — +358 Termination & DID Numbers

Finland is one of the strictest countries on spoofing: Traficom requires operators to block calls from abroad that present a Finnish CLI without authorisation. Calls into Finland should show a Finnish number you actually hold or an honest international number.

Get Finland rates Talk to NOC

Overview

Routing calls to Finland

Whether you are calling a desk phone in Helsinki or a mobile in Tampere, Turku and Oulu, the call is routed by the longest matching +358 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.

Traficom sets the Finland numbering plan, and our prefix tables follow it closely. Supported number types: geographic, national, mobile and toll-free. Inside the country, numbers are dialled with a 0 trunk prefix. Strip it before you send the call, and send 358 followed by the national number.

Outbound termination to Finland starts as soon as your balance is topped up. Local DIDs are different: Traficom rules usually require address and identity documents, which our team collects and checks before activation.

What you get

What you get in Finland

One account and one balance, with the same SBCs for termination and inbound numbers.

CLI route tier
Caller ID delivered end to end on +358 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 +358 prefix is mapped to more than one carrier. Failed attempts move to the next one automatically.

Number formats

How to dial Finland from your PBX

Send E.164 digits. The sample number below shows the format only.

Finland number formats
Format	Example	Notes
International (E.164)	+358 9 1234 5678	How the number is written and stored.
Sent from your PBX	358912345678	E.164 digits with no plus, prefixed by your tech prefix if your account uses one.
With 00 exit code	00 358 9 1234 5678	Accepted on the trunk. We normalise it to E.164.
National format	09 1234 5678	Dialled inside Finland. Strip the trunk prefix before sending.

Compliance

Finland rules to know

What applies before your first call or your first DID goes live.

Compliance box

Regulator: Traficom
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.
Note: Calls from abroad presenting unauthorised Finnish CLIs are blocked.

Rules change — our team confirms current requirements before activation.

Use cases

Who uses Finland routes

01
Helsinki-based tech companies running support on local 09 numbers
02
Nordic shared-service centres in Tampere and Oulu
03
0800 freephone lines for public and retail services

Setup

Start calling Finland 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 +358
Send 358 + national number in E.164 and check the CDR for your first test call.