Whois Lookup
Find out who a domain, IP address or network belongs to — registrar, dates, name servers and abuse contacts, straight from the registry.
At a glance
- Looks up domains, IP addresses (IPv4 and IPv6, or a whole prefix) and AS numbers — paste a URL or an email address and it finds the domain.
- For domains: the registrar, registration date and age, expiry date and days left, last update, name servers, DNSSEC and every status lock explained in plain English.
- For IP addresses and networks: the owner, address range and CIDR, country, network type and the regional registry (ARIN, RIPE, APNIC, LACNIC or AFRINIC).
- Shows the abuse contact — the right place to report spam, phishing or attacks.
- Uses RDAP, the modern, structured replacement for WHOIS that ICANN requires of every registry and registrar. The query goes through rdap.org to the registry itself.
- If a domain isn’t registered, it says so — the name may be available. Free, no sign-up, no captcha.
Step by step
How to look up who owns a domain or IP
- 1
Type or paste
Enter a domain (example.com), a web address, an IP address (8.8.8.8) or an AS number (AS15169).
- 2
Look up
Press Look up. The tool asks the registry responsible for that name or address.
- 3
Read the summary
Check the registrar, dates, name servers, owner and status — or open the raw response.
- 4
Report abuse
To report spam or phishing, use the abuse contact shown.
Features
Everything you need, nothing you don’t
Domains, IPs and ASNs
One box for all three, from a URL, email address or plain name.
Expiry and age
See when a domain was registered, how old it is and how many days are left.
Status locks explained
Codes such as clientTransferProhibited in plain words.
Registrar detail
Also asks the registrar’s own RDAP server for the registrant’s region and abuse contacts.
Network owners
Range, CIDR and owner of any IP, from the regional internet registry.
Raw data
The full RDAP response, and a one-click summary to copy.
Why is the owner “redacted for privacy”?
Since the EU’s GDPR came into force in 2018, registrars hide the personal details of most domain owners. You usually see only the owner’s state or country. To contact an owner, use the contact form or email relay the registrar links to, or ask the registrar. Company-owned IP networks still show the organisation’s name.
WHOIS and RDAP
WHOIS is the old text-based way of asking who registered a domain; every registry formatted its answers differently. RDAP (Registration Data Access Protocol) replaces it with the same information as structured data, over HTTPS. ICANN made RDAP mandatory for generic top-level domains, and the regional internet registries use it for IP addresses and AS numbers. Some country-code domains don’t offer RDAP yet.
Common domain status codes
| Status | Meaning |
|---|---|
| clientTransferProhibited | Locked against transfer to another registrar — a normal safety setting. |
| clientHold / serverHold | The domain has been taken off the internet, often for non-payment or a dispute. |
| redemptionPeriod | Expired and deleted; the previous owner can still restore it for a fee. |
| pendingDelete | About to be deleted, after which anyone may register it. |
| ok / active | No locks or pending actions. |
FAQ
Frequently asked questions
How do I find out who owns a domain?
How can I check when a domain expires?
Is the domain available?
Can I look up an IP address?
What is an AS number?
Where does the data come from?
Keep going
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