Yes, Cloudflare currently supports more than 400 top-level domains (TLDs) and is continually looking into adding new ones.
Popular Cloudflare TLDs include:
Generic TLDs (gTLDs), including .com, .net, and .org.
Developer-focused TLDs including .ai, .dev, .app, and .tech.
Country-code TLDs (ccTLDs) such as .uk.
View the full list of Cloudflare supported TLDs.