How to contact a domain owner who has blocked my IP address

I have tried using a VPN service from the opera browser without knowing that my laptop and my phone’s IP address(as they both were connected to the same wi-fi) will be blocked from the 2 sister domains. It is mentioned here that to get access back to these websites, I need to contact the website owners, but I don’t have a clue how to contact them. I cannot access the websites without the VPN anymore, which is a problem because the VPN was just an experiment I tried. Kindly help me contact the owner.

Unfortunately we don’t have access to any contact details for the website that aren’t public and we can’t help you with this. You could perhaps see if the site has an email address listed anywhere or if they have any social media pages you could contact them through.