Base: Find out customer number - how it works

You need the Base customer number, for example, to cancel or make other changes. We'll show you how to find out the number.

Find out Base's customer number

• Open the following Base website and log in with your mobile phone number and password. Your customer number is listed in the "My data" section.
• Alternatively, you can search Base's customer number in your records. The customer number is recorded on all invoices and on the first letter of the contract.