Registrar information
- Registrar name
- IANA registrar ID
- Registry source
- Contact references
See which registrar manages the domain and where to renew or transfer it.
100% Free • No Signup • 1,200+ TLDs
![]()
WHOIS Lookup
Check domain registration details, registrar, expiry date, nameservers and domain status. Uses RDAP for 1,200+ TLDs with WHOIS fallback for the rest.
Related checks: Verify live DNS records, monitor expiry dates, or browse DNS & domain guides.
Try:
Registrar • Expiry date • Domain status • Nameservers • RDAP lookup • No signup
Why WHOIS matters
Registration data reveals who manages a domain, when it expires, and whether transfer or deletion holds are active. Checking WHOIS/RDAP before transfers, renewals or DNS changes helps you avoid losing control of a domain or missing early warning signs.
What this lookup shows
One lookup helps you understand domain ownership, registration status and expiry details.
Domain dates
- Creation date
- Last updated
- Expiry date
- Days remaining
Track registration timeline and renewal urgency. Use the Domain Expiry Checker for alerts.
Domain status
- Active / registered
- clientTransferProhibited
- clientHold / pendingDelete
- Redemption period
Review lifecycle states that affect DNS, transfers and renewal.
Nameservers
- Published NS hostnames
- Delegation hints
- Count of nameservers
- Cross-check with DNS
Compare registration nameservers with live DNS records.
RDAP & TLD coverage
- 1,200+ TLDs via RDAP
- IANA bootstrap routing
- WHOIS fallback
- ccTLD support (.md, .ro, …)
Structured RDAP when available; WHOIS fallback for extensions without RDAP.
Registrant privacy
- Redacted contact fields
- Privacy proxy services
- GDPR / policy redaction
- Visible registrar data
Many registrars hide owner contacts while expiry, status and nameservers stay visible.
Common domain issues this tool can detect
Quickly identify registration and expiry problems that may affect domain ownership or availability.
Registration & expiry
- Domain expiring soon
- Already expired
- Appears unregistered
Domain status
- pendingDelete flagged
- clientHold active
- Transfer lock enabled
Nameservers & DNS
- Nameservers missing
- NS mismatch with live DNS
- Unexpected delegation
Data source
- RDAP unavailable
- WHOIS fallback used
- Registrar details redacted
For renewal urgency and days remaining, use the Domain Expiry Checker.
How WHOIS lookup works
Use structured registration data to understand domain ownership and lifecycle status.
Enter your domain
We normalize the domain and determine the correct TLD for RDAP or WHOIS lookup.
Query RDAP / WHOIS data
The tool checks available registration data from RDAP or WHOIS-compatible sources.
Review domain details
See registrar, expiry date, domain status, nameservers and helpful recommendations.
When to run a WHOIS lookup
- Before a domain transfer
- After changing registrar or DNS
- Checking expiry before renewal
- Troubleshooting DNS delegation
- Researching a domain before purchase
- Periodic portfolio review
Understanding WHOIS/RDAP results
Active registration
Domain is registered with a future expiry date and no critical hold statuses.
Expiring soon
Expiry is approaching. Renew with your registrar to avoid service interruption.
Hold or pending delete
Statuses like clientHold or pendingDelete can block DNS, transfers or renewal.
Privacy redaction
Registrant contact fields may be hidden while registrar, expiry and nameserver data remain visible.
Preparing WHOIS lookup…
Need help with domain or registrar issues?
Send us your domain details and we’ll review the issue.
Learn more: Domain expiry guide · Data sources
Registration data comes from RDAP or WHOIS sources. Privacy services may hide registrant fields while expiry and status remain visible. How we check
Frequently asked questions
Everything you need to know about WHOIS and RDAP lookups.
A WHOIS lookup checks domain registration information, such as registrar, creation date, expiry date, domain status and nameservers.
RDAP is a modern structured protocol for retrieving domain registration data. It is designed to replace traditional WHOIS with more consistent machine-readable responses.
If a domain expires, websites, email and DNS services connected to it may stop working. Checking expiry helps avoid accidental domain loss.
clientTransferProhibited usually means the domain is locked against transfer. This is common and often protects the domain from unauthorized transfers.
Often no. Many registrars and registries hide or redact personal contact details for privacy and compliance reasons.