reach.parent vs twentytwentyone

twentytwentyone is used by more websites in our catalog: 116 use reach.parent and 655 use twentytwentyone.

twentytwentyone sites have the higher median Ahrefs Domain Rating (reach.parent: 7, twentytwentyone: 18).

Between 2026-06 and 2026-07, reach.parent went from 0.01% to 0.01% of all tracked sites, while twentytwentyone went from 0.08% to 0.07%. reach.parent is gaining ground faster in our index.

No. A site runs a single WordPress theme, so reach.parent and twentytwentyone 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.