co.jp vs register.com

register.com is used by more websites in our catalog: 137 use co.jp and 4,371 use register.com.

co.jp sites have the higher median Ahrefs Domain Rating (co.jp: 70, register.com: 14).

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

No. A site runs a single DNS provider, so co.jp and register.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.