cf-emailsecurity.net vs co.uk

co.uk is used by more websites in our catalog: 127 use cf-emailsecurity.net and 2,691 use co.uk.

cf-emailsecurity.net sites have the higher median Ahrefs Domain Rating (cf-emailsecurity.net: 59, co.uk: 26).

Between 2026-06 and 2026-07, cf-emailsecurity.net went from 0.02% to 0.01% of all tracked sites, while co.uk went from 0.37% to 0.31%. cf-emailsecurity.net is gaining ground faster in our index.

No. A site runs a single email host, so cf-emailsecurity.net and co.uk 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.