register.com vs whois.com

register.com is used by more websites in our catalog: 4,371 use register.com and 176 use whois.com.

whois.com sites have the higher median Ahrefs Domain Rating (register.com: 14, whois.com: 15).

Between 2026-06 and 2026-07, register.com went from 0.48% to 0.50% of all tracked sites, while whois.com went from 0.02% to 0.02%. register.com is gaining ground faster in our index.

No. A site runs a single DNS provider, so register.com and whois.com are mutually exclusive.

Adoption is counted from Site Stats Database's own crawl; Domain Rating comes from Ahrefs and traffic from DataForSEO. Figures reflect the sites we track and refresh at least monthly.