co.uk vs jellyfish.systems

co.uk is used by more websites in our catalog: 2,691 use co.uk and 2,052 use jellyfish.systems.

co.uk sites have the higher median Ahrefs Domain Rating (co.uk: 26, jellyfish.systems: 6).

Between 2026-06 and 2026-07, co.uk went from 0.37% to 0.31% of all tracked sites, while jellyfish.systems went from 0.26% to 0.23%. jellyfish.systems is gaining ground faster in our index.

No. A site runs a single email host, so co.uk and jellyfish.systems 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.