Azure DNS vs UltraDNS

Azure DNS is used by more websites in our catalog: 7,583 use Azure DNS and 2,243 use UltraDNS.

UltraDNS sites have the higher median Ahrefs Domain Rating (Azure DNS: 54, UltraDNS: 55).

Between 2026-06 and 2026-07, Azure DNS went from 1.1% to 0.86% 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 Azure DNS 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.