Connect your business to fiber

I’ve got the fiber

Proximus installs fiber from end to end, to the heart of your business. This makes all the difference in terms of performance and guarantees an ultra-fast and stable connection.

Smoothly downloading and exporting entire gigabites, managing the whole team from distance, or editing your videos online: with fiber, the possibilities are unlimited!

Discover all the advantages of this futureproof technology.

The 3 advantages of fiber

Ultra-fast Internet

Unmatched speeds so you can download and upload documents, photos or other big files in no time.

Ultra-stable connection

A flawless connection on all your devices, anywhere in your business.

Ultra-low latency

Almost instantaneous reaction time with no lag or interruption to ensure a smooth connection.

All our packs available with fiber

Put together your pack according to your needs:

  • An unrivaled fiber Internet experience tailored to your needs
  • As many mobile subscriptions as you want, at a great price
  • Your exclusive customer service, with an expert following your request from A to Z
  • A high-quality Pickx TV experience on all your screens

Free installation

Discover Business Flex Fiber

The flexible pack for your business

Business Flex Fiber is...

  • Unlimited and ultra-fast Internet, adapted to your needs
  • Stable Internet connection, without interruptions
  • Your exclusive customer service, with a Business Expert following your question from A to Z
  • As many mobile subscriptions as you want, at an advantageous price

More than 10 employees?

Enterprise Pack Together Fiber is the tailormade pack for your SME.

Free installation

Did you know?

A technician will come and install fiber  in your business.

Ultra-fast and stable Internet

Even when everyone is connected

Download your construction plans (30GB)

Share photos with your colleagues

How do I get fiber?

  1. As fiber cables are laid neighbourhood by neighbourhood and street by street, you now need to check whether fiber is already available for your address. If such is the case, you will be invited to take advantage of the fiber technology.

    If fiber is not yet available for you, do not hesitate to fill in our form in order to be informed as soon as it is available.

    Can I already have fiber?

Questions that you may still have

Fiber is the technology of the future. The fiber cables transmit data over long distances at the speed of light and thus offer many advantages, including an ultra-fast and much more stable Internet connection than with traditional copper cables.

The network is modernised by gradually replacing the copper cables by fiber cables. And unlike most other operators who stop at the street, we are installing fiber right into your business, to ensure the best possible performance now and in the future. In the long term, the copper network will be completely replaced by this new technology.

Thanks to fiber, you have a super-fast and stable internet connection, ultra-low latency, a sharper image than ever on all your screens and, above all: you’re ready for the future:

  • Ultra-fast Internet: surf and share your files with colleagues and customers faster than ever before. With fiber, never again is your patience put to the test.
  • Stable and reliable Internet: upload and download large files without interruption even if all your colleagues are connected at the same time.
  • A sharper image than ever on all your screens: whether it's on your TV, tablet or smartphone, with fiber, no detail will escape you.
  • Ready for the future: in the future, more and more devices in your business will be connected to the Internet. With fiber, you will easily cope with this evolution.

Mbps is a measure of the amount of data transferred in one second, and is used worldwide to quantify Internet speeds. Mbps stands for megabit per second. Gbps stands for gigabit (or GIGA) per second. A gigabit (or 1 GIGA) is 1,000 megabits - that’s very fast!

When a speed is indicated, it’s almost always the download speed. If 1 GIGA is specified for a Fiber Internet product, this means that the connection can download up to 1 gigabit of data per second. An example: with a connection of 1 gigabyte per second, you can download a video file with a volume of 1.5 gigabit in just 12 seconds, while you would need almost 3 minutes at a traditional speed (70 Mbps).

Fiber not only offers you the fastest and most stable Internet connection on the market, it is also the most environmentally friendly solution. Sending data via fiber generates very little energy. And up to 12 times less than with your current copper cable! So switching to fiber is an optimal decision for the environment and the climate. By phasing out the current copper cables, we are currently recycling 500 tons of copper per year and giving it a second life.

Fiber consists of glass made from silicon dioxide. Silicon disoxide is the second most abundant element on earth, after oxygen. It is found in sand, clay, rocks and even water. Its exploitation does not harm the environment

Compared to copper, the production of fiber does not have a large ecological footprint. According to the industry, the exploitation and production of 2 kg of copper wire (which is used for your current connection) results in the emission of 1,000 kg of CO2, while the emission if fibre is only 0.06 kg.

The alarm system:
It depends on how it is connected:

  • Is it connected via Wi-Fi? This will not be a problem, but the installer of your alarm will need to reconfigure the terminal.
  • Is it connected on your Internet line, on a mobile network, or on a separate analog line (of your pack) and dedicated to your alarm? In that case, you won't have to do anything.
  • Is it connected on the same line as the one you make calls on (the line of your pack)? In that case we recommend that you opt for a backup battery (for your modem, so the modem will continue to function in case of a power outage). Test the alarm line afterwards.

In addition, if your alarm system is connected to a monitoring station, we advise you to ask your alarm installer to check to make sure the installation works properly

The payment terminal:
Recent payment terminals (Wi-Fi, IP, mobiles) will work on fiber connectivity (after being reconfigured). Only old PSTN terminals need to be examined more closely.

The telephone exchange:
This depends on the current technology of your telephone exchange. In case of:

  • An IP-certified telephone exchange: it will work seamlessly on both copper and fiber IP connectivity. You don't have to do anything.
  • A non-IP-certified telephone exchange (e.g. ISDN): you will have the choice between:
    • keeping your non-IP exchange and getting a box to convert the IP signal into an ISDN signal "Bizz IP Box ISDN" (€6.5/month).
    • migrating your exchange to a new Proximus IP exchange (with a "Bizz IP Box Other Party" box (€6.5/month) if your exchange is not a Proximus exchange).

All frequently asked questions

Let's meet and talk

Self-employed or small business (up to 9 employees)

Medium-sized company (10 to 200 employees)

Fixed internet speed: 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. Check the speed of your Internet connection in your home.
Fibre download speeds can only be achieved with a fixed device directly connected to the modem. 

10 Gbps fiber

10 Gbps fibre technology will revolutionise the fixed network, giving you internet speeds of up to 8.5 Gbps download and 1,5 Gbps upload. 

Ultra Fiber selection criteria

250 people will be selected to subscribe to the Ultra Fiber option in advance and experience 10 Gbps fibre technology. This selection will be made according to several criteria:  

  • Being a Business Flex Fiber customer. 
  • Living in one of the following 5 cities: Antwerp, Brussels, Ghent, Liege or Namur.  

Proximus reserves the right to select customers on the basis of certain technical criteria, including the configuration of the home. 

The selected customers will be contacted at the beginning of December. 


To test the Ultra Fiber option before anyone else, you must subscribe to it. You won't have to pay any subscription fee until February included. After this date, your free trial will automatically end and you will be charged € 30/month (vat excl), unless you terminate your subscription before the end of this period.  

To benefit from 10 Gbps technology, your current hardware must be replaced. An installation appointment will need to be scheduled. A technician will come to your home on the scheduled date to set up your Internet Box+ and your new ONT box, which is used to connect your box to the fiber network. Any Wi-Fi Boosters you might have will also have to be replaced by Wi-Fi Boosters+.    

If you terminate your Ultra Fiber option, you will be asked to return your Internet Box+ and any Wi-Fi Boosters+. You will receive a cancellation confirmation and the option will be charged to you on a pro-rata basis. You will be downgraded back to your basic Internet subscription (with a speed of 1 Gbps/200 Mbps) and the right hardware, a new Internet Box (and if applicable, one or more Wi-Fi Boosters) will also be delivered to you by post. 

Why choose fiber for your business?

Equip your business with optical fiber and reach speeds of up to 1 Gbps in download and up to 150 Mbps in upload with Business Flex Fiber Premium. Optical fiber is increasingly convincing professionals and companies throughout Belgium. Here are just some of the advantages of optical fiber for your business:

  • Fiber offers a superfast internet connection
  • Fiber offers a stable and reliable internet connection
  • Fiber allows seamless communication by videoconferencing
  • Fiber increases the quality of group activities (e.g. cloud)
  • Fiber also represents a commitment to quality for your company

Where is fiber available?

Fiber is available in several major Belgian cities and is being rolled out in others. It is also being deployed on industrial estates and in industrial buildings, as well as most new housing estates and apartment buildings.

Thanks to our partnerships with Fiberklaar in Flanders and Unifiber in Wallonia, the roll-out of fiber will pick up speed in the coming months and years, in order to offer you the best network available. The aim is to provide an ultra-fast and stable network that can easily absorb the data traffic that will continue to grow in the years to come.

Check if this applies to your city

Need help?

Questions about our offers?

An advisor is at your service

Proximus Digital Assistant