arubadns.cz vs UltraDNS

UltraDNS is used by more websites in our catalog: 233 use arubadns.cz and 2,243 use UltraDNS.

UltraDNS sites have the higher median Ahrefs Domain Rating (arubadns.cz: 29, UltraDNS: 55).

Between 2026-06 and 2026-07, arubadns.cz went from 0.03% to 0.03% of all tracked sites, while UltraDNS went from 0.32% to 0.25%. arubadns.cz is gaining ground faster in our index.

No. A site runs a single DNS provider, so arubadns.cz 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.