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WHOIS Lookup

Look up live WHOIS registration data for a domain — registrar, creation and expiry dates, name servers, status codes, and any contact details the registry or registrar still publishes.

How to use this tool

  1. 1

    Type a registrable domain such as example.com into the input (no http:// and no subdomain like www).

  2. 2

    Click 'Lookup WHOIS' to query the authoritative WHOIS servers for that domain.

  3. 3

    Read the returned record, which is grouped by the WHOIS server that answered (registry first, then registrar).

  4. 4

    Scan for the fields you need — Registrar, Created/Updated/Expiry dates, Name Server, and Domain Status.

What is a WHOIS lookup and how does it work?

WHOIS is a query/response protocol (RFC 3912) for retrieving who registered an internet resource. This tool sends your domain to its backend, which uses the open-source 'whoiser' library to talk to WHOIS servers over TCP port 43. It first asks IANA which registry runs the domain's TLD, queries that registry's WHOIS server, then follows the referral to the sponsoring registrar's server for fuller detail — two hops by default. WHOIS servers reply with free-form text, so the library applies only light normalization; you receive a structured object keyed by each server that answered, which the page prints as raw JSON. Typical fields include Registrar, Creation/Updated/Registry Expiry dates, Name Server, and Domain Status (EPP codes such as clientTransferProhibited). Because servers format records differently and personal data is largely redacted under GDPR and ICANN policy, expect inconsistent field names and missing registrant details. This is a thin client over real WHOIS, not a fully parsed, standardized data feed — good for quick checks, but verify edge cases against the registrar's own WHOIS or RDAP.

Common use cases

  • Confirm when a domain expires so you can renew before it drops or someone else grabs it.

  • Identify which registrar a domain uses before initiating a transfer or filing an abuse report.

  • Check Domain Status (EPP) codes to see whether a domain is locked, on hold, or pending deletion.

  • Verify the name servers a domain points to when debugging DNS or a recent migration.

  • Estimate a domain's age from its creation date while evaluating it for purchase or backlinks.

  • Gather registrar contact details to send an inquiry about buying a privacy-protected domain.

Frequently asked questions

Does this tool run in my browser or send my query somewhere?▼
It is not browser-only. The domain you enter is sent to this site's server, which performs the WHOIS lookup on your behalf and may log it as a recent check. Browsers cannot open raw port-43 WHOIS connections, so a server step is required for any web-based WHOIS tool.
What should I type in the box?▼
Enter just the registrable domain, like example.com or example.co.uk. Leave off http://, https://, paths, and subdomains such as www — WHOIS is keyed to the registered domain, not a full URL or hostname.
Why is some contact information redacted or missing?▼
Since GDPR and ICANN's 2018 Temporary Specification, registrars must withhold most personal registrant data from public WHOIS. Many also offer privacy/proxy services that replace details with the provider's own. Registrar, name servers, status, and dates usually remain visible.
Why does the output look like raw JSON with odd field names?▼
WHOIS servers return free-form text and each formats fields differently. The underlying library applies only minimal parsing, so the page shows a structured object grouped by responding server rather than a single clean, standardized layout.
Can I look up an IP address or a TLD instead of a domain?▼
This page is built for domain names. The underlying whoiser library can query IPs, AS numbers, and TLDs, but this tool's input and result view are oriented around a single registrable domain, so stick to domains here.
How current is the data, and could a lookup fail?▼
Queries hit authoritative WHOIS servers live, so data reflects the registry/registrar at request time. Lookups can still fail or time out if a TLD rate-limits WHOIS, blocks the server's IP, or has no port-43 service — in those cases try the registrar's WHOIS or an RDAP endpoint.
Is WHOIS the same as RDAP?▼
No. WHOIS (RFC 3912) returns unstructured text over port 43, which is what this tool uses. RDAP is the newer JSON-and-HTTP successor that returns standardized, machine-readable records; for programmatic use or strict parsing, RDAP is more reliable.

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