Look up domain registration and IP ownership via RDAP
Look up the registration record of any domain — registrar, creation and expiry dates, nameservers, and lock status — or the ownership of any IP address. Results come from RDAP, the modern structured successor to the WHOIS protocol, and every status code is explained in plain English instead of left as jargon.
Privacy note: your query (just the domain/IP) is sent to our server, which asks the public RDAP directory. We don't log or store it.
The most useful fields for day-to-day work: the expiry date tells you whether a domain you depend on (or covet) is coming up for renewal; the status codes tell you whether it's locked, suspended, or in a post-expiry grace period; the nameservers tell you where its DNS is hosted; and the abuse contact is where to report phishing or spam originating from the domain or IP range.
Related tools: check what a domain's DNS actually serves with the DNS Lookup tool, or see your own connection's address and network with What Is My IP.
WHOIS is the decades-old protocol for looking up who registered a domain or who controls an IP address block. RDAP (Registration Data Access Protocol) is its modern, structured replacement — same data, but delivered as JSON over HTTPS with proper internationalization. This tool queries the public RDAP directory (which covers all gTLDs like .com/.org/.net and the regional IP registries), then presents the response in a readable card with the raw JSON available underneath.
Privacy regulation — chiefly the GDPR since 2018 — led registries and registrars to redact personal registrant data from public WHOIS/RDAP output. For most domains you will see the registrar, dates, nameservers, and status codes, but not the person behind it. The abuse contact (for reporting spam or phishing) usually remains published, and this tool surfaces it when present.
They are ICANN EPP status codes describing locks and lifecycle states. clientTransferProhibited, for example, means the registrar has locked the domain against being transferred away — a standard anti-hijacking protection, not a problem. Others matter more: clientHold or serverHold means the domain has been suspended and does not resolve. This tool explains every status code it shows in plain English, inline.
Not every registry publishes RDAP data. Most generic TLDs (.com, .net, .org, and the newer gTLDs) are fully covered, but a number of ccTLD registries have not adopted RDAP or restrict access. If a registered domain comes back "not found," look up its TLD in IANA’s root zone database (iana.org/domains/root/db) to find the registry, then use that registry’s own lookup page — the tool tells you this honestly rather than guessing.
Your query (just the domain/IP) is sent to our server, which asks the public RDAP directory. We don’t log or store it. Responses are cached for up to an hour so repeated lookups of popular domains are fast. Note this differs from most of our tools, which run entirely in your browser — a WHOIS lookup inherently requires asking the registry.
Yes — enter any IPv4 or IPv6 address and the tool queries the regional internet registry (ARIN, RIPE, APNIC, LACNIC, or AFRINIC) via RDAP. You get the network name and handle, its status, registration dates, and the abuse contact for reporting misuse from that address range.
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