Best Blackhat Forum

Good evening folks,
I'd like to know if you can devise an automatic or semi-automatic way to search and find old websites. Websites that are not responsive or are outdated or are built with an old version of WordPress.
My intention (obviously!) is to contact those people and offer them a website re-building service.
I'd appreciate your smart ideas.
Thank you
Eleni

try https://www.expireddomains.net/

and to check what was hosted on the site - use https://archive.org/web/

Thanks, but maybe I didn't explain what I need clearly enough.
I need to find live websites that are using an older version of WordPress. I want to offer the website owners my services.
Eleni