Understand WHOIS domain data — registrant, registrar, registration and expiry dates, status codes and name servers. Learn how to read any domain's WHOIS record.
The prefix tells you how many bits are network vs host.
Network and broadcast addresses are never usable by hosts.
Leave headroom when dividing subnets for future devices.
Understand WHOIS domain data — registrant, registrar, registration and expiry dates, status codes and name servers. Learn how to read any domain's WHOIS record.
Type a domain to see its registration details.
Understand registrar, dates and status codes.
| Field | Meaning |
|---|---|
| Registrar | Company that registered the domain |
| Creation date | When the domain was registered |
| Expiry date | When registration must be renewed |
It is completely free, private and requires no signup.
Use the tool nowA protocol and database for looking up who owns a domain and its registration details.
Most registries require public data, though privacy services can mask registrant details.
Explore the whole collection — no signup, 100% free & private.