nhs.uk vs UltraDNS

UltraDNS is used by more websites in our catalog: 117 use nhs.uk and 2,243 use UltraDNS.

nhs.uk sites have the higher median Ahrefs Domain Rating (nhs.uk: 64, UltraDNS: 55).

Between 2026-06 and 2026-07, nhs.uk went from 0.02% to 0.01% of all tracked sites, while UltraDNS went from 0.32% to 0.25%. nhs.uk is gaining ground faster in our index.

No. A site runs a single DNS provider, so nhs.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.