Free Domain Checker
Instantly check any domain's registration age, WHOIS data, DNS records, SPF, DMARC, and HTTP security headers. Get a Technical Transparency Score in under 5 seconds — completely free.
WHOIS · Domain Age · DNS · SPF · DMARC · Security Headers · 100% Free · Instant
What Our Free Domain Checker Analyzes
Every check pulls from independent public data sources. No paid databases, no guesswork.
WHOIS & Domain Age
Registration date, registrar, expiry, and privacy protection status. Recent registration is context only and does not determine whether a seller is trustworthy.
DNS Records
A, AAAA, MX, and NS records reveal the hosting provider and mail infrastructure. Useful for identifying shared hosting patterns common in fraud operations.
SPF Record Check
Verifies whether the domain has a Sender Policy Framework record. SPF prevents unauthorized servers from sending email in the domain's name.
DMARC Policy Check
Checks the DMARC enforcement level (none, quarantine, or reject). DMARC describes email handling requested by a domain owner; it does not verify a website or seller.
Security Headers
Checks for HSTS, Content Security Policy, X-Frame-Options, and MIME-type protection — headers that security-conscious developers implement.
Transparency Score
All signals are combined into a single Technical Transparency Score (0–100) so you can assess a domain's posture at a glance.
Why Use a Domain Checker Before Visiting a Website?
Every time you visit an unknown website, you expose your IP address and browsing behaviour. If the site is fraudulent, you may also inadvertently hand over payment data through a fake checkout form or download malware from a misleading link.
A domain checker can collect selected technical information before you visit a site. Registration dates and email configuration provide context, but do not establish how long a business has operated or whether a seller is legitimate.
This lookup can inspect publicly available technical information for any domain. It does not query malware or abuse blocklists and cannot determine whether a seller is trustworthy.
Before online shopping
Review selected public technical information, then verify the seller and payment terms independently.
After a suspicious email
Check the domain of any link in a phishing email before clicking it.
Due diligence research
Verify the technical posture of any domain for security or business research.
Related Free Security Tools
WHOIS Domain Lookup
Full WHOIS data: registration date, age, registrar, expiry, and name servers.
SPF Record Checker
Validate SPF DNS records and see which servers are authorized to send email.
DMARC Policy Checker
Check DMARC enforcement level and understand how a domain handles email spoofing.
IP Address Lookup
Look up provider-reported geolocation and network details for an IP address.
Frequently Asked Questions
What does a free domain checker do?
It looks up publicly available technical information about any domain: registration date (WHOIS), domain age, DNS records, email authentication (SPF and DMARC), and HTTP security headers. These observations provide technical context but cannot establish whether a website or seller is legitimate.
Is this domain checker really free?
Yes, completely free — no registration, no subscription, no usage limits. The site may display advertising and affiliate links.
How accurate is the domain checker?
Results are based on publicly available data (WHOIS registries, DNS records, HTTP headers) and are can be incomplete or unavailable. Technical analysis alone cannot determine whether a site is legal or trustworthy; verify sellers using independent information.
What is a domain checker used for?
Primarily to verify website legitimacy before shopping online, clicking links in emails, or sharing personal information. It's also used for security research, due diligence, and email deliverability troubleshooting.