WHOIS Lookup
Registration details — any TLD, up to 20 at once
Look up a domain’s registration — registrar, creation and expiry dates, status and nameservers — across virtually every TLD. Powered by modern RDAP with a WHOIS fallback, and you can check up to 20 domains at once.
How to read the results
- 1.Enter one domain, or paste up to 20 (one per line) to compare them side by side in tabs.
- 2.A green “Available” card means no active registration was found — the domain looks free to register right now.
- 3.For a registered domain you get the registrar, creation, last-updated and expiry dates, EPP status codes and the authoritative nameservers.
- 4.The expiry date is colour-coded — green if comfortable, amber within 30 days, red if already expired — so lapsing domains jump out.
- 5.The source badge shows whether the data came from RDAP (structured, modern) or a WHOIS fallback for TLDs that lack RDAP.
- 6.Open “Raw WHOIS” to read the unparsed record exactly as the registry returned it.
Why it matters
A WHOIS lookup answers the fundamental questions about any domain — who the registrar is, how old the domain is, when it expires and whether it is even registered at all. That matters when you are vetting a partner or seller for trust, auditing your own portfolio so nothing lapses by accident, investigating a suspicious or phishing domain, or checking whether the name you want is still available to buy. Because the tool reads live registry data over RDAP (with a classic port-43 WHOIS fallback), the answer reflects the domain’s real state this moment — not a cached guess — and batch mode lets you audit twenty names in a single pass.
Frequently asked questions
What is a WHOIS lookup?
A WHOIS lookup queries the public registry record for a domain and returns who registered it, the registrar of record, the creation, update and expiry dates, the domain’s status codes and its nameservers. It is the standard way to see the registration facts behind any domain name.
How do I check if a domain is available?
Just enter it. If no active registration exists, the tool shows a green “Available” card — the domain appears unregistered and free to register. If it returns registrar and dates instead, the domain is already taken. Final availability is always confirmed at a registrar’s checkout, since a name can be reserved or in a grace period.
Which TLDs are supported?
Virtually all of them. We use the IANA RDAP bootstrap for every gTLD and many ccTLDs, and fall back to port-43 WHOIS for the rest, so coverage spans .com, .net, .org, country domains and the newer gTLDs alike.
What is the difference between WHOIS and RDAP?
RDAP (Registration Data Access Protocol) is the modern, structured, JSON-based successor to legacy WHOIS. It returns consistent, machine-readable fields and standardised status codes. This tool prefers RDAP and only falls back to text WHOIS for TLDs that have not adopted it yet — you see which was used in the source badge.
What do the domain status codes mean?
Those are EPP status codes set by the registry or registrar. Common ones: “ok” (active, no restrictions), “clientTransferProhibited” (a lock that blocks transfers), “clientHold” (removed from DNS), “pendingDelete” and “redemptionPeriod” (the domain expired and is heading toward release), and “autoRenewPeriod” (recently auto-renewed).
Why is the contact / registrant info hidden?
Most registrars redact personal contact details for privacy under GDPR and WHOIS privacy services, so registrant name and email are usually masked. The registrar, key dates, status codes and nameservers remain public and are what this tool surfaces.
Why does the expiry date matter?
A domain that lapses can drop out of DNS, break email and your website, and eventually be registered by someone else. Checking expiry — and colour-coding anything within 30 days — lets you renew before an avoidable outage or a lost name.
Is this WHOIS lookup free and does it need an account?
Yes, it is completely free, needs no signup, and runs right in the browser against live registry data. You can look up a single domain or batch up to 20 at once.
What is a WHOIS lookup?
A WHOIS lookup is the standard way to read the public registration record behind any domain name. Every domain — whether it ends in .com, .net, .org, a country code like .co.uk, or one of the newer extensions — has a record held by its registry that says who the registrar is, when the domain was first registered, when it was last changed, when it expires, and which nameservers currently answer for it. Running a domain WHOIS turns that record into a clear, readable summary in seconds.
People use WHOIS to vet an unfamiliar company or seller before trusting them, to investigate a suspicious or phishing domain, to keep their own portfolio from lapsing, and to check whether a name they want is still free to register. This tool queries live registry data on demand, so what you see reflects the domain’s real state right now.
WHOIS record fields, explained
- Domain
- The name being looked up, normalised to its registrable form.
- Registrar
- The ICANN-accredited company the domain is registered through — where it is renewed or transferred.
- Registrant
- The domain owner. Usually redacted for privacy under GDPR and WHOIS privacy services.
- Created
- The date the domain was first registered — a rough proxy for its age and reputation.
- Updated
- The last time the registration record changed (renewal, nameserver edit, status change).
- Expires
- When the current registration term ends. Renew before this date or the domain can lapse.
- Status
- EPP status codes set by the registry/registrar — locks, holds and lifecycle states (see below).
- Name servers
- The authoritative DNS servers that answer for the domain — where its DNS is actually hosted.
Common domain status codes
Registries publish a domain’s state as EPP status codes. The ones you will see most often:
ok / activeThe domain is active with no special restrictions.clientTransferProhibitedA registrar lock that blocks transfers to another registrar — normal and protective.clientUpdateProhibitedChanges to the domain record are locked at the registrar.clientHold / serverHoldThe domain is removed from DNS and will not resolve until the hold is lifted.autoRenewPeriodThe domain was recently auto-renewed; a grace window applies.redemptionPeriodThe domain expired and can still be restored by the former owner for a fee.pendingDeleteThe redemption window passed; the domain is about to be released for public registration.inactiveNo nameservers are set, so the domain does not resolve yet.
RDAP vs. classic WHOIS
RDAP (Registration Data Access Protocol) is the modern, JSON-based successor to legacy text WHOIS. It returns consistent, structured fields and standardised status codes, and it is what most registries now serve. This tool prefers RDAP for accuracy and only falls back to classic port-43 WHOIS for the TLDs that have not adopted it yet — the source badge on each result tells you which was used.
Is the domain available?
If a lookup finds no active registration, the result appears as a green “Available” card — the domain looks unregistered and free to claim. That is a strong signal, but final availability is always confirmed at a registrar’s checkout, because a name can be reserved, premium-priced, or sitting in a grace period. When a domain is available, the card offers a suggested next step to register it.