Domain name registrar: a business that facilitates domain name registration, leasing them from registries (which own the names). Registrars notify registries when a domain is sold and manage reservations, not ownership. They also protect user privacy and maintain security against attacks like hijacking. Cloudflare is one such registrar, offering transparent renewal costs.
https://www.cloudflare.com/learning/dns/glossary/what-is-a-domain-name-registrar/