Publisher pages on PUBLC are generated automatically, and they are based on the domain of the content. When content from a specific domain is added to PUBLC for the first time, PUBLC then automatically creates a new Publisher page for that domain with a URL in the format of -publc.com/publishers/domain-address.
You can search for publishers on PUBLC by just typing the publisher's domain address in PUBLC's search bar.
If you have a domain and it's not found on PUBLC then all you need to do is add one piece of your content from your domain and a Publisher page is then created for you.
Learn how to add content to PUBLC here.