What the WHOIS Lookup Tool Does
The WHOIS Lookup Tool queries the public registration record for any domain name and displays the results in a structured, readable format. No account is required and the tool is completely free to use.
A WHOIS record contains the information a domain's registrant submitted when registering the domain - including who owns it, which registrar they used, when the domain was registered, when it expires, and its nameservers.
How to Use It
- Go to the WHOIS Lookup Tool
- Type a domain name in the search box (for example
google.com) - Press Enter or click the search button
- Results appear within a few seconds
You can also go directly to a domain's result by adding the domain to the URL path: /tools/whois/google.com
Understanding the Results
Registrar Information
This section tells you which registrar manages the domain's registration.
- Registrar name - The company the domain owner registered with (for example, GoDaddy, Namecheap, Google Domains)
- Registrar URL - The registrar's website
- IANA ID - The registrar's numeric ID assigned by ICANN
Important Dates
- Created - When the domain was first registered. A very recent date means the domain is new.
- Updated - When the registration record was last changed. Frequent updates can indicate active management or automated renewal processes.
- Expires - When the registration is due for renewal. Domains approaching this date may be available to register if the owner decides not to renew.
Registrant Contact Information
This section shows who owns the domain. Due to WHOIS privacy services and GDPR redaction, these fields are often partially or fully hidden.
- Name - The registrant's name (individual or organisation)
- Email - Contact email for the domain owner
- Phone - Contact phone number
- Organisation - The registrant's company name, if provided
- Country - Country of the registrant
When a registrant uses WHOIS privacy protection, these fields show proxy contact details (usually belonging to the privacy service) rather than the real registrant's information.
See Understanding WHOIS Data Fields for a full explanation of when fields are empty or redacted.
Nameservers
The nameservers handle DNS resolution for the domain - they tell browsers and mail servers where to find the domain's website and email setup. Common entries here include:
- Cloudflare nameservers (
ns1.cloudflare.com,ns2.cloudflare.com) - indicates the domain uses Cloudflare for DNS - Hosting provider nameservers - often indicate which hosting company is used
- Custom nameservers - used by larger organisations managing their own DNS infrastructure
Status Codes
EPP status codes describe the domain's current administrative state. The most common codes you will see:
| Status | What it means |
|---|---|
clientTransferProhibited |
The registrar has locked the domain against outbound transfers |
clientDeleteProhibited |
The registrar has locked the domain against deletion |
clientUpdateProhibited |
The registrar has locked the domain against contact or nameserver changes |
serverTransferProhibited |
The registry (not the registrar) has locked the domain against transfers |
Domains with clientTransferProhibited and clientDeleteProhibited are well-protected against hijacking. A domain with none of these locks set is more vulnerable to social engineering attacks on the registrar's support team.
What to Do After Looking Up a Domain
If the domain belongs to your business: Check that the expiry date is well in the future and that all contact details on file with your registrar are current. Outdated contact details can cause you to miss renewal reminders.
If you are researching a domain for purchase: Note the expiry date and look up the registrar. Many registrars allow you to track a domain for backorder or notification when it drops.
If you are investigating a suspicious domain: Combine the WHOIS result with a DNS Health Checkup to see whether the domain has active email infrastructure (MX + SPF records) set up - a signal of operational intent.
If you need bulk WHOIS data across thousands of domains: The free tool is suited for individual lookups. For bulk research, the WHOIS Database provides pre-collected, structured data for millions of domains delivered as a CSV file.
Limitations of the Free Tool
- One domain at a time
- Results reflect the current record only (no history)
- Subject to rate limiting for automated queries
For bulk research, historical data, or automated integration, see:
- WHOIS Database - bulk domain registration records
- Getting Started with the API - API-based access
- DNS Health Checkup Tool - DNS record audit alongside WHOIS data