Try:
Ready to lookup
Enter a domain name and click Lookup WHOIS// query domain registration data in one click
Look up WHOIS data for any domain instantly. Get registrar, creation date, expiry, nameservers, and contact info — free, browser-based, no sign-up.
Ready to lookup
Enter a domain name and click Lookup WHOISType or paste any domain name — full URLs are automatically cleaned.
Hit the Lookup WHOIS button or press Enter to query registration data.
View registrar, dates, nameservers, and domain status at a glance.
WHOIS is an internet protocol that queries databases storing registration information for domain names. It reveals who registered a domain, when, and when it expires — essential data for domain research.
A WHOIS lookup queries the public registration database for a domain name. It returns details like the registrar, registration and expiry dates, nameservers, and domain status flags set by the registry.
Since GDPR came into force in 2018, many registrars redact personal contact details (name, email, phone) from public WHOIS records to protect registrant privacy. You may see "Redacted for Privacy" or proxy contact details instead.
This is a domain status flag that prevents the domain from being transferred to another registrar without first removing the lock. It is a common anti-hijacking protection and is set by the registrar.
RDAP (Registration Data Access Protocol) is the modern replacement for the legacy WHOIS protocol. It returns structured JSON data, supports internationalized domain names (IDN), and has better security. This tool uses RDAP via rdap.org.
RDAP coverage varies by registry. Most major TLDs (.com, .net, .org, .io, country codes like .uk, .de) are supported. Some newer or obscure TLDs may not have RDAP endpoints yet and will return an error.
No. All lookups are processed server-side and forwarded to the public RDAP infrastructure. We do not log or store domain queries made through this tool.
A WHOIS lookup tool queries the public domain registration database to retrieve ownership and technical information about a domain name. When someone registers a domain, their registrar submits details to the relevant registry — the authoritative database for that top-level domain (TLD). This data is made publicly accessible via the WHOIS protocol, and more recently through RDAP (Registration Data Access Protocol).
This free online WHOIS tool uses the RDAP standard to fetch the most accurate, structured data available for any domain you query. No software to install, no account required — just enter the domain and get results instantly.
A typical WHOIS or RDAP record includes several categories of data:
clientTransferProhibited, serverDeleteProhibited, and ok. These indicate what operations are permitted or locked on the domain.The legacy WHOIS protocol (RFC 3912) was designed in the early days of the internet and has significant limitations: unstructured plain-text responses, no authentication, inconsistent formatting across registries, and no support for internationalized domain names. RDAP was standardized by IETF (RFC 7480–7484) as its replacement.
RDAP offers structured JSON responses that are machine-readable and consistent. It supports IDN (internationalized domain names with non-ASCII characters), is served over HTTPS for security, and allows differentiated access levels. This tool uses rdap.org as a universal RDAP gateway, routing your query to the correct registry automatically.
Web developers, system administrators, and security researchers use WHOIS lookups regularly:
clientTransferProhibited) has been removed.WHOIS records include EPP status codes that describe the current state of a domain registration. Here are the most common ones:
ok — The domain is active with no restrictions. Normal operational status.clientTransferProhibited — The registrar has locked the domain to prevent unauthorized transfer. Most actively-managed domains have this set.serverTransferProhibited — The registry (not registrar) has set a transfer lock, often for legal or dispute reasons.clientDeleteProhibited — Prevents the domain from being deleted at the registrar level.serverHold — The domain is not resolving in DNS, typically due to non-payment or a policy violation.pendingDelete — The domain is in the process of being deleted and will soon become available for re-registration.redemptionPeriod — The domain has expired and is in a grace period during which the original owner can recover it (usually 30–45 days, for a fee).Since the General Data Protection Regulation (GDPR) took effect in May 2018, the landscape of WHOIS data changed significantly. Registrars subject to GDPR (primarily those serving EU registrants, but many applied it globally) began redacting or anonymizing personal contact information from public WHOIS records. Fields like registrant name, email address, phone number, and mailing address are now commonly replaced with privacy proxy contacts or simply marked "Redacted for Privacy."
Technical data — nameservers, status codes, registration dates, and registrar identity — generally remains public and is what this tool focuses on. For full registrant contact details, law enforcement and qualified parties can submit formal requests through registrar processes.
The expiry date in a WHOIS record tells you exactly when a domain registration ends. Domains are typically registered in 1-year increments and must be renewed before expiry. After the expiry date passes, there is usually a grace period of around 30 days during which the owner can still renew (often with a late fee). After that comes a redemption period of up to 45 days at a higher redemption fee. If still not renewed, the domain enters a pending delete phase and eventually becomes available for public registration again.
If you're tracking competitors or monitoring brand-adjacent domains, checking expiry dates regularly with a WHOIS lookup tool can alert you to opportunities or risks.