Domains, honestly explained

What is a domain?

A domain is a human-readable name that points to an IP address. cernet.host is easier to remember than 193.34.103.42. Domains consist of a name (cernet) and an extension / TLD (.host). See our TLD list for 80+ extensions.

How do I pick a great domain name?

• Short — under 14 characters, ideally shorter
• Pronounceable — can you tell someone without spelling it?
• No hyphens or numbers — confusing when spoken
• Easy to spell — avoid "ph" vs "f", "k" vs "c"
• Memorable — invented word > generic word

Try our free domain name generator for inspiration.

Which extension should I pick?

• Commercial: .com is still king
• Dutch local: .nl
• Tech / startup: .io, .ai, .app, .dev
• E-commerce: .shop, .store
• Personal: .me

DNS records explained

• A — points your domain to an IPv4 address (the website)
• AAAA — same but for IPv6
• CNAME — alias: www.you.com points to you.com
• MX — points email to the right mail server
• TXT — generic text fields, often for verification (Google, Facebook)
• SPF — tells mail servers which other servers may send on your behalf (anti-spoofing)
• DKIM — digital signature on outbound mail
• DMARC — policy: what should a mail server do if SPF/DKIM fail?

How do I transfer my domain?

1. Request an EPP/Auth code from your current registrar
2. Unlock the domain (turn off transfer lock)
3. Start the transfer at the new registrar — see our domain transfer
4. Confirm by email (within 5 days)
5. Wait for registry confirmation (1-7 days)