Subscription to the Ultra Fiber option

Already a Flex Fiber customer? Or you are a Flex customer and fiber is available at your address ? Do you live in Brussels, Antwerp, Namur, Ghent or Liege? Fill out this form and we will contact you as soon as possible to add the Ultra Fiber option to your pack.

More information? Check here for further details and conditions

Personal data of the customer

{{errorMessages.FirstName.required}} {{errorMessages.FirstName.pattern}} {{errorMessages.FirstName.pattern}} {{errorMessages.FirstName.pattern}} {{errorMessages.FirstName}} {{errorMessages.FirstName.pattern}}
{{errorMessages.LastName.required}} {{errorMessages.LastName.pattern}} {{errorMessages.LastName.pattern}} {{errorMessages.LastName.pattern}} {{errorMessages.LastName}} {{errorMessages.LastName.pattern}}
{{errorMessages.customer.required}} {{errorMessages.customer.pattern}}
{{errorMessages.City.required}} {{errorMessages.City.pattern}}
It can be found on the left corner of your last bill or payment statement, next to the document number {{errorMessages.Cust_CDBid.required}} {{errorMessages.Cust_CDBid.pattern}} {{errorMessages.Cust_CDBid.pattern}} {{errorMessages.Cust_CDBid.pattern}} {{errorMessages.Cust_CDBid}} {{errorMessages.Cust_CDBid.pattern}}
{{errorMessages.MAILBACKADDR.required}} {{errorMessages.MAILBACKADDR.pattern}} {{errorMessages.MAILBACKADDR.pattern}} {{errorMessages.MAILBACKADDR.pattern}} {{errorMessages.MAILBACKADDR}} {{errorMessages.MAILBACKADDR.pattern}}
{{errorMessages.CLECountry.required}} {{errorMessages.CLECountry}}
{{errorMessages.CLEPhone.required}} {{errorMessages.CLEPhone.pattern}} {{errorMessages.CLEPhone.pattern}} {{errorMessages.CLEPhone.pattern}} {{errorMessages.CLEPhone}} {{errorMessages.CLEPhone.pattern}}
{{errorMessages.CALLBACKCLICountry.required}} {{errorMessages.CALLBACKCLICountry}}
{{errorMessages.CALLBACKCLIPhone.required}} {{errorMessages.CALLBACKCLIPhone.pattern}} {{errorMessages.CALLBACKCLIPhone.pattern}} {{errorMessages.CALLBACKCLIPhone.pattern}} {{errorMessages.CALLBACKCLIPhone}} {{errorMessages.CALLBACKCLIPhone.pattern}}
{{errorMessages.lomKey}} The field is mandatory

Pick a date, then pick a slot

  • There are some time slot free for this date, please pick one on the right.
  • Please fill in all the above required fields so we can propose you time slots
  • We do not find any slots available for the date you selected. Please pick another one.
{{errorMessages.selectedCallbackDate.required}} {{errorMessages.selectedCallbackDate.pattern}} {{errorMessages.selectedCallbackDate.pattern}}

Good deals alert

To receive the best offers from Proximus, including fiber installation at your address, please check the box below.

Please wait, your data is being processed


Fixed Internet speed:

The 10 Gbps fiber technology allows speeds of up to 8.5 Gbps for download and 1 Gbps for upload. These fiber download speeds can only be achieved with a fixed device directly connected to the Internet Box+. Using Wi-Fi may reduce your download speed. The actual speed experienced also depends on the computer system, but also in exceptional cases, on the general usage. To find out the Internet speed in your home, visit


The Ultra Fiber option is a paid option. It will cost you €30/month, in addition to the price of your Flex Fiber pack. To take advantage of the 10 Gbps technology, you must have a Flex Fiber pack:

  • If you are already a Flex Fiber customer, your current hardware will need to be replaced.
  • If you are not yet a Flex Fiber customer and fiber is available at your address, you will have to opt for a Flex Fiber pack.

In both cases, 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+.