Which registration district issues the license plate prefix KN?

The official vehicle prefix KN belongs to the registration district Konstanz, Singen, Stockach in Baden-Württemberg. The locally competent authority is Landratsamt Konstanz.

How can I check and reserve available KN custom license plates online?

Via the digital license plate check, you can search for your desired combination with prefix KN (1–2 letters and up to 4 digits), reserve it online, and order embossed DIN plates delivered by post.

Are all i-Kfz services available online for vehicles with KN plates?

Yes. Via the i-Kfz platform for Konstanz, new registration, change of keeper, re-registration, deregistration, and address changes can be completed entirely online without an appointment.

Can I keep my KN license plate when moving or changing ownership?

Yes. Under nationwide license plate retention rules, an existing KN plate can continue to be used when moving or transferring ownership, provided the vehicle remains registered.

License plate KN: Registration district Konstanz, Singen, Stockach & online processing

KN · XX 1234

Profile of license plate prefix KN

The official license plate prefix KN is issued in the registration district Konstanz, Singen, Stockach (Baden-Württemberg). The locally responsible authority is Landratsamt Konstanz. Via the digital platform, you can reserve available KN custom license plates, order DIN-embossed plates, and submit new registrations, transfers, and deregistrations directly online.

Order KN license plates online →Check KN custom plate

Competent registration authority for prefix KN

Landratsamt Konstanz

Max-Stromeyer-Str. 47
78467 Konstanz

Opening hours: Mo 08:00-12:00 14:00-16:00, Di 08:00-14:00, Mi 08:00-12:30 14:00-17:30, Do 08:00-12:00 14:00-18:00, Fr 08:00-12:00

Go to i-Kfz platform Konstanz →

Landratsamt Konstanz

Laubwaldstr. 4
78224 Singen

Opening hours: Mo 07:30-15:00, Di 07:30-12:30 13:30-17:00, Mi 07:30-15:00, Do 07:30-15:00, Fr 07:30-12:30

Go to i-Kfz platform Singen →

Landratsamt Konstanz

Adenauerstr. 4
78333 Stockach

Opening hours: Mo-Di 08:00-12:00, Mi 08:00-13:00, Do 08:00-12:00 14:00-18:00, Fr 08:00-12:00

Go to i-Kfz platform Stockach →

Public information of the competent authority – not part of this portal.

Digital platform services for Konstanz (KN)

Select the desired procedure for the Konstanz registration district:

New registration→Re-registration→Transfer of ownership→De-registration→Change of address→Personalised plate→Licence plates→Green emissions sticker→Car insurance & eVB→

Competent registration authority for prefix KN – Konstanz, Singen, Stockach (22)

Frequently asked questions about prefix KN (Konstanz, Singen, Stockach)

Which registration district issues the license plate prefix KN?: The official vehicle prefix KN belongs to the registration district Konstanz, Singen, Stockach in Baden-Württemberg. The locally competent authority is Landratsamt Konstanz.
How can I check and reserve available KN custom license plates online?: Via the digital license plate check, you can search for your desired combination with prefix KN (1–2 letters and up to 4 digits), reserve it online, and order embossed DIN plates delivered by post.
Are all i-Kfz services available online for vehicles with KN plates?: Yes. Via the i-Kfz platform for Konstanz, new registration, change of keeper, re-registration, deregistration, and address changes can be completed entirely online without an appointment.
Can I keep my KN license plate when moving or changing ownership?: Yes. Under nationwide license plate retention rules, an existing KN plate can continue to be used when moving or transferring ownership, provided the vehicle remains registered.

More license plate codes in Baden-Württemberg

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Last updated: 25.10.2026.