Closed on Ascension Day
DUO is closed on Thursday 29 May (Ascension Day).
Phone number
Making changes
Changes can't be made via the telephone.
Opening hours
The DUO Info Line is available on weekdays from 9 a.m. to 5 p.m.
Before you call
- If you would like to request information about someone else by phone, you must be authorised with a special DUO authorisation form. A DigiD authorisation is valid for DigiD only.
- Make sure you have your Citizen Service Number ('burgerservicenummer' or 'BSN') to hand.