Domainsdb.info checks the lists of registered domains from database with more than 260M of registered domain names and 1500+ TLDs including newGTLDs and ccTLDs. Now it’s easy to research for domain names containing particular words, phrases or numbers. It's free to use and could be helpful branding/marketing/security research tool. Search results are limited to 50 results. You can have up to 100 results via our free API.

This is pretty cool, our https://eyedomain.com/keyword-tr... has a bigger database but it's paid after a number of results, I don't know of a better free one than Domainsdb.info

Great idea and awesome free tool!