You—the person or entity who owns the rights to the domain.
During checkout, you will encounter "Domain Privacy" (or WHOIS privacy). Investing in this is highly recommended, as it masks your personal contact information from public databases, significantly reducing spam and protecting your privacy. Post-Purchase Responsibilities buy dns domain
The commercial entity (like Namecheap, Google Domains, or GoDaddy) where you actually make the purchase. You—the person or entity who owns the rights to the domain