Impossible to release ip

Hi there!

Thank you for posting your concern here.

The Elastic IP address you are trying to release is set as rDNS for the domain ulferiksplace.com, this is what I got when I run the host command in the terminal, and to solve the case you can reach out to AWS to request for the removal of rDNS entry. You also have to make sure before you release the address you must be sure that the Elastic IP is not currently associated with an AWS resource, such as an EC2 instance, NAT gateway, or Network Load Balancer

You can use the following link for guidance on the removal of the Elastic IP.
[1] https://aws.amazon.com/premiumsupport/knowledge-center/ec2-address-errors/

I hope this will help, and if not, then you are welcome for further engagement.

Thanks
TL