Domain and IP registration from the registry over RDAP: registrar, expiry date and status
Runs in your browser. Only the lookup you start is sent to the domain's registry (RDAP); nothing else leaves your device. Updated on 25 Oct 2026.A WHOIS lookup reads a domain's or IP address's registration record. This page uses RDAP, the registries' HTTPS replacement for WHOIS: IANA's list names the right server among about 379, which returns the registrar, the creation and expiry dates, status codes such as client transfer prohibited, nameservers and DNSSEC.
Type a domain or IP address in Domain name or IP address and press Look up.
Read Registration for the registrar, created and expiry dates, and nameservers.
Read Status for each EPP code explained in words.
Press Copy record to copy the registration as text.
Enter a domain name or an IP address. The page reads IANA's public bootstrap list to find which registry answers for it, then asks that registry's RDAP server directly: Verisign for .com and .net, Public Interest Registry for .org, Nominet for .uk, ARIN or RIPE NCC for an address, and so on. RDAP is the HTTPS and JSON successor to the old port-43 WHOIS, and it is what ICANN now requires registries to run.
For a domain you get the registrar and its IANA ID, the creation, expiry and last-changed dates, the days until expiry, the nameservers, and whether the delegation is signed with DNSSEC. Every status code is put into words using the RFC 8056 mapping: "client transfer prohibited" is the normal lock that stops a hijack, while "client hold", "redemption period" and "pending delete" mean the domain is in trouble.
For an IP address you get the network's name and handle, its first and last address and CIDR, the organisation holding it, the country as registered, and the abuse contact.
Missing names are normal. Since GDPR, registries and registrars leave out the owner's name, address and email, and many list what they removed. A record with no registrant is not an error, and the page says so. For thin registries such as .com, a link to the registrar's own record is shown when the registry gives one.
What it does not do. Some country-code registries, .de among them, do not run RDAP yet; for those the page says so and points you to the registry's own website instead of guessing. It does not use port-43 WHOIS, which a browser cannot reach, and it shows one registry's record, not a history.
Only the domain or address you type is sent, and only to data.iana.org and that one registry.
Both return registration data. WHOIS is a plain-text protocol on port 43 with a different layout at every registry. RDAP, defined in RFC 9082 and 9083, answers over HTTPS in JSON with fixed field names and status words, and ICANN now requires it from generic registries. A browser can read RDAP directly.
Enter the domain and read the Expires line, which comes from the registry itself, with the days left counted against today. Under 30 days the box turns amber. A registrar may renew automatically a few days before, so check your registrar account too before assuming it will lapse.
Registries and registrars remove personal details such as the owner's name, email and address to comply with GDPR and ICANN's registration data policy. Many RDAP answers list exactly which fields were redacted. The registrar can still forward a message to the owner or disclose the data for a lawful request.
The registrar has locked the domain so it cannot be moved to another registrar. The lock is normal and protects against hijacking; most domains carry it together with delete and update locks. The owner removes it in the registrar's control panel before starting a transfer.
Yes. Enter the address and the page asks the regional registry that holds its block, such as ARIN or RIPE NCC. The record shows the network name, the address range, the organisation and country as registered, and the abuse contact. The registered country is not always where the address is used.
Two: data.iana.org, to read IANA's public list of registries, which is the same file for everyone, and then the one registry's RDAP server that answers for your domain or address. The name or address you type goes only to that registry. If the IANA list cannot be read, rdap.org is used to find it.
Still stuck? Ask about WHOIS Lookup and anybody who knows can answer. No account needed.
Same job, other tools: AS Number Lookup – Turn an AS number into the network name, registry and allocation date · AAAA Record Lookup (IPv6) – Check whether a domain has an IPv6 address, and what it is · CNAME Lookup – Check where a CNAME alias points and follow the chain to its final address · IP to ASN Lookup – Map an IP address to the ASN that announces it, with the BGP prefix.
On the related tools: Open Port Checker – See if a port forwarded on your router is reachable from the internet.