stackdns.com vs UltraDNS

UltraDNS is used by more websites in our catalog: 1,227 use stackdns.com and 2,243 use UltraDNS.

UltraDNS sites have the higher median Ahrefs Domain Rating (stackdns.com: 21, UltraDNS: 55).

Between 2026-06 and 2026-07, stackdns.com went from 0.16% to 0.14% of all tracked sites, while UltraDNS went from 0.32% to 0.25%. stackdns.com is gaining ground faster in our index.

No. A site runs a single DNS provider, so stackdns.com 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.