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Europe

SIP Trunk Netherlands — +31 Termination & DID Numbers

The Netherlands is one of Europe's main interconnect points, with Amsterdam's exchanges carrying a large share of the continent's traffic. For numbers, 085 and 088 non-geographic ranges are a common alternative to area-bound 020 or 010 DIDs.

Overview

Routing calls to Netherlands

Traffic to Netherlands leaves our SBCs on more than one upstream carrier per prefix. If a leg toward Amsterdam or Rotterdam starts returning 503s or long post-dial delay, the next attempt goes to another carrier automatically. Calls to The Hague, Utrecht and Eindhoven follow the same failover logic.

Numbering in Netherlands is managed by ACM. 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 31 followed by the national number.

For inbound numbers in Netherlands, 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 Netherlands

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

  • CLI route tier

    Caller ID delivered end to end on +31 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 +31 prefix is mapped to more than one carrier. Failed attempts move to the next one automatically.

Number formats

How to dial Netherlands from your PBX

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

Netherlands number formats
FormatExampleNotes
International (E.164)+31 20 123 4567How the number is written and stored.
Sent from your PBX31201234567E.164 digits with no plus, prefixed by your tech prefix if your account uses one.
With 00 exit code00 31 20 123 4567Accepted on the trunk. We normalise it to E.164.
National format020 123 4567Dialled inside Netherlands. Strip the trunk prefix before sending.

Compliance

Netherlands rules to know

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

Compliance box

Regulator
ACM
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 Netherlands routes

  • 01

    Pan-European support desks based in Amsterdam with local and 0800 numbers

  • 02

    Companies using 085/088 numbers for a single national presence

  • 03

    Logistics firms around Rotterdam linking depots onto one trunk

Setup

Start calling Netherlands in 3 steps

  1. 01

    Top up $200

    Open a prepaid account and add balance by USDT (TRC20), BTC or card.
  2. 02

    Add your trunk

    Whitelist your PBX IP or create digest credentials, then point your outbound route at our SBC.
  3. 03

    Dial +31

    Send 31 + 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

Netherlands SIP trunk questions

What are 085 and 088 numbers?

Non-geographic numbers that are not tied to a city. 088 is aimed at companies with several locations.

Do Dutch geographic numbers need a local address?

Usually yes. The number should match where the user is based.

Who regulates Dutch numbering?

The ACM (Authority for Consumers and Markets) oversees telecom markets and numbering.

How do I format an Amsterdam number?

+31 20 followed by 7 digits. Drop the leading 0 when sending from the trunk.

Get Netherlands rates

Send us your expected volume and traffic type for +31. We reply with current CLI and non-CLI rates. Compliance notes for ACM are included.