The .gb domain extension is the reserved country code for Great Britain (United Kingdom), but it's largely inactive and retired in favor of the more common .uk domain, with virtually no new registrations available; it was used historically by the British government (e.g., hmg.gb) for email, but is now mostly a relic, with a recent government blog ...

The .sch.uk domain extension is a specialized, free, second-level domain for UK primary and secondary schools, academies, and other educational institutions, providing a trusted, official online identity for their websites and emails, strengthening branding, and distinguishing them within the UK's education system. It's managed by Nominet and ...

The .mod.uk domain extension is a specific second-level domain (SLD) within the UK's internet structure, designated for the Ministry of Defence (MoD) and its associated armed forces entities, signifying official UK government defense operations, though it often acts as a CNAME to the modern .gov.uk infrastructure for unified digital services. ...

The .nhs.uk domain signifies a website or service is part of the UK's National Health Service (NHS) in England, ensuring it's official, trustworthy, and managed under NHS guidelines for health information and services. It's used by NHS organizations for official online presences, helping patients easily identify legitimate sources for health ...