co.uk vs UltraDNS

co.uk is used by more websites in our catalog: 2,705 use co.uk and 2,243 use UltraDNS.

UltraDNS sites have the higher median Ahrefs Domain Rating (co.uk: 31, UltraDNS: 55).

Between 2026-06 and 2026-07, co.uk went from 0.38% to 0.31% of all tracked sites, while UltraDNS went from 0.32% to 0.25%. UltraDNS is gaining ground faster in our index.

No. A site runs a single DNS provider, so co.uk and UltraDNS 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.