Free tool · Live RDAP
How old is this
domain, really?
A domain's age is one of the first things receivers judge. See exactly when it was registered, when it expires, who the registrar is, and what its status codes really mean.
What registration data tells a cold-email sender
Age is reputation you can't fake
You can configure perfect SPF, DKIM and DMARC in an hour — but you can't fake three years of registration history. Receivers know this, which is why fresh domains start under suspicion.
Expiry is a deliverability landmine
A sending domain that lapses doesn't just stop sending — its reputation resets and it can be re-registered by anyone. Check expiry on every domain you send from, and auto-renew.
Registrar and nameservers reveal the setup
Whether a domain is on a mainstream registrar with managed DNS or parked somewhere obscure is itself a signal — to you when vetting a list, and to receivers scoring the sender.
Status codes catch problems early
'Client hold' or 'redemption period' means a domain is suspended or dying. Spotting that before you build a campaign on it saves a wasted warmup.
Questions, answered honestly
Why does domain age matter for cold email?
Receivers use it as a trust signal. Spammers burn through fresh domains constantly, so a domain registered last week sending cold email looks exactly like abuse. Domains under ~3 months old should warm up slowly and keep volume low; an established domain starts with reputation in the bank. This tool computes the exact age from the registration date.
What's the difference between WHOIS and RDAP?
RDAP is the modern, structured replacement for the old free-text WHOIS protocol — same data (registration, expiry, registrar, nameservers, status), but as clean JSON the registry serves directly. We query RDAP because it's accurate, machine-readable, and the registries publish it with permissive CORS, so the lookup runs in your browser instead of through a middleman.
Why is the registrant's name and contact missing?
GDPR and ICANN's resulting Temporary Specification redacted personal registrant details from public WHOIS/RDAP in 2018. You'll reliably see the registrar, dates, nameservers and status, but the human owner's name, email and address are now hidden behind privacy unless they opted in. That's the law, not a limitation of this tool.
What do the status codes mean?
They're EPP status codes set by the registrar or registry. Most ('client transfer prohibited', etc.) are routine anti-hijacking locks and a good sign. A few — 'client hold', 'pending delete', 'redemption period' — mean the domain is suspended or expiring. The tool translates each one into plain language.
Some country domains return nothing. Why?
Not every country-code registry runs an RDAP server yet (a few still offer only legacy WHOIS, and some don't publish ownership data at all). When a registry has no RDAP endpoint, there's nothing for a browser to query — the tool says so rather than guessing.
Keep going
More free tools
Vet a domain here. Monitor it in Norbelys.
Norbelys watches the domains you send from — authentication, reputation, the records that drift — so an expiring domain or a broken SPF record reaches you as an alert, not as a deliverability crash.
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