register.com vs udag.org

register.com is used by more websites in our catalog: 4,371 use register.com and 164 use udag.org.

udag.org sites have the higher median Ahrefs Domain Rating (register.com: 14, udag.org: 50).

Between 2026-06 and 2026-07, register.com went from 0.48% to 0.50% of all tracked sites, while udag.org 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 udag.org 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.