ac.uk vs ui-dns.biz

ui-dns.biz is used by more websites in our catalog: 164 use ac.uk and 1,827 use ui-dns.biz.

ac.uk sites have the higher median Ahrefs Domain Rating (ac.uk: 74, ui-dns.biz: 22).

Between 2026-06 and 2026-07, ac.uk went from 0.03% to 0.02% of all tracked sites, while ui-dns.biz went from 0.23% to 0.21%. ac.uk is gaining ground faster in our index.

No. A site runs a single DNS provider, so ac.uk and ui-dns.biz 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.