.SE + .NU Registry
Scheduled for Jun 3, 19:00 UTC  -  Jun 4, 00:00 UTC
During this scheduled system maintenance by the registry, the following services may be unavailable:

Availability Checks
Whois Services
Domain Purchases
Domain Renewals
Domain Updates

For a list of affected TLD's, please look the registry up in the following spreadsheet:
Posted Apr 20, 2020 - 18:43 UTC
This scheduled maintenance affects: Domain Services (Other ccTLDs).