Really weird.
dynu.com is a dynamic dns service. I don't think the maintainer of vlemmy.net would be running the instance from a dhcp (variable) IP, to justify using dynamic dns.
Or is it usual for people to run instances from their homes using common ISP subscriber variable IP addresses?
Even more strange that it was registered just last month, according to whois. Is vlemmy.net that new?
It seems dynu.com is a dynamic dns service. Was vlemmy.net running from a variable IP (dhcp) address? Is that usual for lemmy instances?