A domain registrar is a company authorized to register domain names and manage their associated account and renewal settings. Registrars provide controls for contact details, nameservers, and domain transfers, while the domain’s registry maintains the authoritative record for each top-level domain.
In cyber security, registrar account access matters because attackers who take over an account may change DNS settings, redirect visitors, or interfere with renewal. Use strong, unique authentication and multi-factor authentication, keep account recovery details current, and enable automatic renewal or monitor expiration dates. When evaluating a domain offer, check renewal costs and transfer rules, and confirm that you retain control of the domain in your own account.