Whois Domain Lookup
Look up registrar, registration / expiry dates, status and authoritative DNS for any domain.
What a Whois record contains
A Whois record reveals who registered a domain and through which registrar, when it was registered and when it expires, its lifecycle status (clientTransferProhibited etc.) and whether DNSSEC is enabled. It is the first place to check when judging the credibility of an unfamiliar site.
RDAP first, port 43 fallback
This tool queries via RDAP — the modern JSON replacement for legacy Whois — and falls back to classic Whois when a registry does not provide RDAP. Results are normalized so you always see the same fields regardless of the registry.
Privacy-protected registrations
Many registrars redact owner contact details under GDPR or paid privacy services. Seeing "REDACTED FOR PRIVACY" is normal and says little about trustworthiness; registration age and history matter more.
Need the in-depth Chinese version? Read the full guide.
Related articles
"Whois Records Explained: What Domain Registration Data Can Tell You"
Registrar, registration and expiry dates, status codes — Whois is more than a quick lookup, and every field has a story. RDAP migration, GDPR redaction, the domain life cycle, and drop-catching timing.
What Is an IP Address? IPv4, IPv6, Public and Private, Explained in One Pass
A plain-language explanation of what IP addresses do, how IPv4 and IPv6 differ, how to tell public from private IPs, and why the IP you see isn't the one others see.
Autonomous Systems (ASN): The Internet's Map of Carriers
What do AS4134 and AS13335 in IP lookup results mean? Autonomous systems (ASNs) are the internet's administrative map — read them and you can tell who an IP belongs to, how good it is, and whether it's a proxy.
How IP Geolocation Works: Inside GeoIP Databases
Where GeoIP data comes from, how accurate it is, why it updates weekly, and why your result is sometimes off by a whole province.
More in the blog index
Frequently asked questions
Why do some fields show "redacted"?
GDPR and privacy proxy services hide owner contact information. This is standard practice and unrelated to the legitimacy of the domain.
What does "expires in 2 months" mean for trust?
Short remaining lifetime slightly raises risk — spammers rarely pay for long registrations. Established sites usually renew years ahead. But it is a weak signal on its own.
Does a recently registered domain mean fraud?
Not necessarily, but a domain registered days ago that asks for payments or logins deserves extra scrutiny. Scam campaigns cycle through fresh domains constantly.