Domain availability, whois & DNS
The fastest way to check any domain: is it available, who owns it, and when does it expire? Type a name and get an instant answer.



Check any domain and TLD in a single search.
Registrar, created, updated and expiry dates, plus domain status.
A, AAAA, MX, TXT, SOA and more, with TTLs and name servers.
Domain age and a progress bar showing when it might come back on the market.
Save domains and track their availability over time.
No sign-ups - just search. Pro is a one-time payment.
Domainfo is the fastest way to check any domain on your iPhone. Type a name and get an instant answer for any domain and TLD. If it’s available, you can register it in one tap.
For registered domains you get the full picture: registrar, created, updated and expiry dates, and domain status - laid out cleanly instead of a wall of raw whois text. Domain age and a renewal progress bar are calculated for you, so you can see exactly when a domain might come back on the market.
Look up A, AAAA, MX, TXT, SOA and more, with TTLs, plus name servers at a glance. It’s handy when you’re checking a DNS change has gone through, or debugging email for a client while you’re away from your desk.
Save any domain with a tap and Domainfo tracks its availability status. Re-check a domain straight from your portfolio, and recent lookups are always one tap away.
No accounts and no sign-ups - just search. A clean, modern interface with full dark mode keeps it quick to use, and Domainfo Pro is a small one-time payment, never a subscription.
Type the domain into Domainfo. You’ll get an instant availability answer, and available domains can be registered in one tap.
Look it up in Domainfo. The whois view shows the expiry date, and a renewal progress bar shows when it might come back on the market.
A, AAAA, MX, TXT, SOA and more, with TTLs, plus the domain’s name servers.
No. Domainfo is free to download, and Pro is a small one-time payment that adds the full DNS and name server view, unlimited lookups and portfolio, and no ads.
I use Google Analytics cookies to see how people find and use this site. Nothing else - and only if you’re happy with that. Privacy policy