01
Availability
Checks whether a domain name is free to register.
An instant Available or Taken verdict before you buy or build.
Founders · Bloggers · Developers · MarketersOpen tool
Domain intelligence · six lenses
All in One Domain Checker Tool · DomainRecon
Availability, WHOIS, DNS, SSL, subdomains and email security. Paste your domains, get answers you can actually read.
100% Free — no costNo signup requiredTrusted by ICANN WHOIS Database
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The six lenses
Bulk domain lookup. Six lenses.
Each tool does one focused job, built for the people who actually run the lookup.
02
WHOIS
Shows who registered a domain and when it expires.
Registrar, registration date, expiry date and nameservers, when not privacy-protected.
Security Researchers · Buyers · JournalistsOpen tool
03
DNS Lookup
Reads the records that decide where a domain lives.
A, AAAA, MX, TXT, CNAME, NS and SOA records in one pass, configured or not.
Developers · Sysadmins · DevOpsOpen tool
04
SSL Checker
Verifies the certificate a site is actually serving.
Issuer, expiry, validity period, covered domains (SANs) and trust status.
Website Owners · Security Teams · HostsOpen tool
05
Subdomain Discovery
Maps the publicly discoverable subdomains of a domain.
A ready-made list of hosts like mail.example.com, api and blog.
Pentesters · Bug Bounty · IT AdminsOpen tool
06
Email Intelligence
Checks a domain's email authentication posture.
SPF policy, DKIM selectors and DMARC policy, so you can spot spoofing risk at a glance.
Email Admins · Security Pros · IT SupportOpen tool
Workflow
Three steps to an answer.
01
Enter a domain
Type or paste any hostname, like a root domain or a subdomain, with or without the www.
02
Pick a lens
Availability, WHOIS, DNS records, SSL certificate, subdomains or email authentication.
03
Read the verdict
Every tool answers in plain language you can act on, not a raw technical dump.
Sponsor section
Trusted by
Free, no signup required. Backed by the ICANN WHOIS Database and trusted registry data.
Founders
Developers
Sysadmins
Security Pros
Email Admins