You report your move to the National Registration Office in Aarhus at lifeindenmark.dk.
Your move abroad will be registered in the Civil Registration System (CPR).
At lifeindenmark.dk choose "start", log on to the self-service solution, and choose "Notification of leaving the country" in the lower right corner.
Report your move at lifeindenmark.dk
If you are staying abroad for less than six months
If you are staying abroad for less than six months, but you do not have full disposal of your residence in Aarhus while you are gone, you must also report your move.
If you are staying abroad for less than six months and you are not sure whether you have full disposal of your residence, please contact the National Registration Office (part of Citizen Service / Borgerservice) at 89 40 10 30.
The National Registration Office will guide you on whether you must report your move.
If you return to Aarhus after having reported your move abroad
If you have reported your departure you are registered in the Civil Registration System (CPR system) as having left Denmark. Since you have been issued with a CPR number on a previous occasion you must follow these guidelines when you return.
Other practicalities when moving abroad
You may find information about other practicalities to attend to when leaving Denmark at lifeindenmark.dk:
Practical matters before leaving (lifeindenmark.dk)