Yes, it is possible to register and use Swedish characters such as å, ä, and ö in domain names. This is made possible through a technology called IDN (Internationalized Domain Names).
What is IDN and how does it work?
When you register a domain name with non-standard characters (such as å, ä, ö, ü, é, etc.), the system automatically converts it into a format called Punycode.
For example:
The domain trädgård.se is technically stored and registered as xn--trdgrd-cuak.se.
This Punycode conversion ensures that the domain can work across the global Domain Name System (DNS), which is designed to handle only the standard English alphabet (A–Z), numbers, and hyphens.
Do I need to know the Punycode version?
In most cases, you don’t. Modern browsers, email clients, and applications support IDN and will display your domain with å, ä, or ö just as you registered it. For instance, if someone types trädgård.se, the browser will resolve it correctly without the user ever noticing the Punycode.
However, there are certain situations where knowing the Punycode version can be important:
Older applications or systems – Some software does not fully support IDN and may require the Punycode format.
cPanel and hosting panels – When adding your domain in tools like cPanel, you may need to use the technical Punycode version.
Email clients – Certain programs, such as Outlook, may display the Punycode version when sending or receiving emails.
Summary
You can safely register and use domains with å, ä, and ö. Thanks to IDN technology, they will work seamlessly for most users and applications. Just be aware that the Punycode version (for example, xn--trdgrd-cuak.se) may appear in some technical systems or email clients. This is normal and does not affect the functionality of your domain.