The best solution depends on how many employees use internet-intensive applications at the same time, the tools your company relies on and how critical your internet connection is to your operations. Businesses with heavier usage typically need higher performance, flexibility and professional support.
Professional internet
For companies with demanding internet needs
- Work without slowdowns, even with multiple teams connected
- Benefit from advanced security for your company
- Count on priority 24/7 support
Want the fastest internet in Belgium?
Check if fiber can be installed and/or activated in your business to get the best Internet performance.
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Discover professional internet tailored to your company
Internet Pro+
For companies that rely on a stable connection every day and need extra reliability with priority professional support.
- 100 Mbps max download
- 40 Mbps max upload
Fiber Up
Perfect for companies that use cloud tools, video calls and AI applications every day.
- Up to 1 Gbps download speed
- Up to 500 Mbps upload speed
Recommended
Fiber Fast
For companies that regularly work with large files, AI tools and advanced software.
- Up to 2.5 Gbps download speed
- Up to 1 Gbps upload speed
Fiber Express
For companies with the highest performance requirements.
- Up to 8.5 Gbps download speed
- Up to 1.5 Gbps upload speed
Focus on your company. Proximus takes care of the rest.
Stay productive
Your teams use AI, cloud applications, video calls and company tools simultaneously, without interruptions.
Work securely
With a connection designed for company needs, including an integrated firewall to better protect your tools, applications and data.
Count on us
Priority 24/7 support provided by experts and rapid intervention to minimise disruptions to your company.
Keep your business running smoothly with advanced options
Stay operational, even during an outage
In the event of an internet outage, a 5G backup connection takes over to keep your business running.
Stay protected against cyber threats
Protect your employees, devices and internet connection against cyberattacks.
Adapt your network to your needs
Add fixed IP addresses to easily connect servers, cameras and business applications.
Just need internet for a one-time event?
Set up a temporary connection for your event, pop‑up or construction site.
Interested? Get expert advice.
A dedicated Business Partner helps you choose the solution that best fits your business and your needs.
Simplify your daily work
Everything your company needs, in one pack
Internet, mobile, cloud telephony and digital services combined in a solution tailored to your business.
Automate repetitive tasks
Business applications that help save time and allow your teams to focus on what matters most.
More questions?
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Professional internet is designed for businesses that rely heavily on their internet connection. If multiple employees use cloud applications, video calls, AI tools or business software at the same time, or if an internet outage could impact your operations, you may benefit from higher performance, faster intervention times and professional support.
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Options such as Mobile Back-up help keep your business connected in the event of an outage. You also benefit from priority support and rapid intervention to minimise disruption.
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The more your teams rely on cloud applications, video calls, AI tools or large file transfers at the same time, the more performance your business will need.
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Yes. Professional internet solutions can support more advanced requirements, including multiple locations, remote teams and specialised business applications.
Conditions
The General Terms and Price Lists & Tariffs are applicable. All prices indicated are exclusive of VAT.
Professional Internet
The Professional Internet portfolio includes Internet Pro+, Fiber Up, Fiber Fast and Fiber Express. Offer availability depends on the technology available at your address.
Internet speeds
The speeds displayed on this page are maximum theoretical speeds.
| Offer | Download | Upload |
|---|---|---|
| Internet Pro+ | Up to 100 Mbps | Up to 40 Mbps |
| Fiber Up | Up to 1 Gbps | Up to 500 Mbps |
| Fiber Fast | Up to 2.5 Gbps | Up to 1 Gbps |
| Fiber Express | Up to 8.5 Gbps | Up to 1.5 Gbps |
Actual speeds may vary depending on the technology available at your address, your installation, equipment, internal cabling, network conditions and Wi‑Fi usage.
Fiber availability
Fiber Up, Fiber Fast and Fiber Express are only available at addresses eligible for Proximus Fiber. Check fiber availability at your address.
More information about Fiber and comparative studies.
Professional support
Internet Pro+, Fiber Up, Fiber Fast and Fiber Express include professional 24/7 support. In the event of an incident, interventions are performed according to the applicable service commitments in order to minimise the impact on your business.
Mobile Back-up
Mobile Back-up is available as an option on selected Professional Internet offers. Service functionality depends on mobile network coverage and the technical configuration of the installation. Certain setups may require prior technical validation.
Fastest and most stable fixed internet in Belgium
Fastest Internet in Belgium, available with Enterprise Pack Together + Fiber Fast or Express and if your address is eligible for fiber. The actual speed experienced depends on the computer system, but also in exceptional cases, on general use. Your surfing speed may also be slower, while using Wi-Fi. Go to proximus.be/internetspeed to discover the surfing speed in your home.
Fastest and most stable fixed internet in Belgium: based on analysis by Ookla®(PDF, 372KB) Ookla® Speedtest Intelligence® data, 1H 2026. All rights reserved.
Best fixed internet performance: results from the 2025 fixed connections barometer(PDF, 2MB) published on 12/01/2026 by the independent company nPerf. Results based on 161 349 tests carried out between 01/01/2025 and 31/12/2025 on fixed networks (xDSL, HFC, FTTx) in Belgium. Barometer and methodology available on nPerf.com.
Fixed Internet Speed: The actual speed you experience depends on your computer system, and in exceptional cases, general usage. Wi-Fi usage may also reduce your browsing speed. To check the browsing speed at your home, visit proximus.be/internet-speed.