Free domain lookup tools: age, owner, host and mail provider
No code. Paste a domain, or a list of them, and see its age, registrar, host and email provider.
Look up who a domain belongs to and what it runs on: whether it is free to register, how old it is, when it expires, its registrar, web host and status, which mailbox provider and email tools it uses, and look-alike domains that could be used to spoof it. Most run in bulk on a pasted list of domains.
17 free tools
Bulk domain availability checker
Paste up to 100 domains (500 when signed in), or bare names to try across .com, .io and other TLDs, and see which are registered and which look available, straight from each registry's RDAP server.
Domain age checker
Registration date, age, expiry and registrar for up to 10 domains, read from each registry's RDAP server, with honest gaps where a registry publishes nothing.
Bulk domain age checker
Paste or upload a list of domains or emails and get each domain's creation date, age and registrar from RDAP, sorted, filtered by age and downloadable.
Bulk domain expiry checker
Paste or upload a list of domains and get each one's expiry date, days left and registrar from RDAP, grouped into expired or in grace, under 30 days, 30–90 days and 90+ days.
Domain drop date calculator
Enter a domain or a list. Each one's registry status and expiry date give its phase and the window in which it could be deleted and released.
Available domain name generator
Enter up to three keywords and pick TLDs: name ideas from prefixes, suffixes and keyword joins are checked against each registry's RDAP server and DNS, likely-available first.
WHOIS lookup
Registrar, creation and expiry dates, EPP status, name servers and DNSSEC from the registry's own RDAP server, with contact records hidden until you ask.
Bulk WHOIS lookup
Paste or upload domains and get registrar, created, updated and expiry dates, EPP status codes, nameservers and DNSSEC for each, from the registry's RDAP server, in one table.
Domain registrar lookup
Enter a domain or a list and get each one's registrar and expiry from the registry, the company that runs its DNS (where records are edited) and its email provider.
Website host checker
Paste one website or a list and see which platform serves each one, the DNS record or header that says so, plus the company running its DNS and its email.
Bulk website status and parked domain checker
Paste a list of domains and see each one's HTTP status, where it redirects, and whether it looks parked or for sale, with the signal that says so.
Lookalike domain checker
Enter your domain to generate up to 150 typo, homoglyph, Unicode and TLD variants and see which are registered, which answer on the web and which have MX records to send or receive email.
Email provider lookup
Enter a domain or address and see its mail provider and any security gateway (Proofpoint, Mimecast, Barracuda), read from MX and SPF records.
Bulk MX / provider lookup
Upload a CSV of emails or domains, get each row's mail provider from MX and SPF, and download the list split into Google, Microsoft and other.
Email stack lookup
Paste company domains and see each one's mailbox provider, sending platforms, security gateway, DMARC reporting and verified SaaS, with the DNS record behind each.
Which ESP sent this email?
Paste the raw headers of any email and see the platform that sent it, such as SendGrid, Mailchimp or Amazon SES, with the DKIM, bounce and Received lines behind it.
Is Gmail down?
Reads Google's own status feed for open Gmail incidents and connects to Gmail's mail servers to read their greeting, with the time of each check. Outlook.com too, from Microsoft's status page.