Domains, DNS & the AI era, explained
Plain-English definitions and practical guides — what a TLD is, how registries and registrars differ, what DNSSEC and RDAP mean, and how to choose and register a name for an AI-mediated internet.
Guides
How to register a .Best domain
A step-by-step guide to registering a .Best domain: choose a name, pick a registrar, and set it up in minutes.
How to choose a domain name in the AI era
How to pick a domain that works when AI agents — not just people — read and recommend your name.
Glossary
What is a TLD (top-level domain)?
A top-level domain (TLD) is the last part of a domain name — the segment after the final dot, such as .com, .org, or .best.
What is a gTLD (generic top-level domain)?
A generic top-level domain (gTLD) is a top-level domain not tied to a country — such as .com, .org, .app, or .best.
What is a ccTLD (country-code top-level domain)?
A country-code top-level domain (ccTLD) is a two-letter TLD assigned to a country or territory, such as .fr for France or .ai for Anguilla.
Registry vs registrar: what's the difference?
A registry operates a top-level domain and maintains its master database; a registrar sells domain registrations in that TLD to the public.
What is DNSSEC?
DNSSEC (Domain Name System Security Extensions) cryptographically signs DNS data so resolvers can verify it hasn't been tampered with.
What is EPP?
EPP (Extensible Provisioning Protocol) is the standard protocol registrars use to register and manage domains with a registry.
What is RDAP?
RDAP (Registration Data Access Protocol) is the modern, structured successor to WHOIS for looking up domain registration data.
What is a superlative TLD?
A superlative TLD is a top-level domain whose extension expresses category leadership — .Best is the primary example.
What is the ICANN new gTLD round?
An ICANN new gTLD round is an application window in which organisations can apply to operate new generic top-level domains; the next is in 2026.