Security Testing
Domain Security Health Checker
Evaluate the resilience of your domain against email spoofing, DNS hijacking, and traffic interception.
Your domain is the core of your digital identity. This tool provides a comprehensive health check by auditing critical security records and protocols. From email security (SPF, DKIM, DMARC) to DNS integrity (DNSSEC) and web encryption (HTTPS, HSTS), understand where your domain is vulnerable and get prioritized remediation steps to protect your brand and user trust.
Security Health Results
Submit your domain configuration for a security audit.
Health Summary
Record Checklist
| Record Type | Status |
|---|---|
| SPF (Email) | - |
| DMARC (Email) | - |
| DNSSEC (DNS) | - |
| HSTS (Web) | - |
Vulnerability Distribution
Remediation Plan
- Enforce DMARC: Move from `p=none` to `p=quarantine` or `p=reject` to block unauthorized emails.
- Enable DNSSEC: Protect your DNS records from being spoofed or manipulated in transit.
- Apply HSTS: Force browsers to only interact with your domain via HTTPS for a set period.
- CAA Records: Specify which Certificate Authorities (CAs) are allowed to issue certificates for your domain.
- Private Registration: Use WHOIS privacy to hide your personal contact details from attackers.
Audit Disclaimer
This is a self-reported assessment. For a live audit of your DNS records, use tools like `dig`, `nslookup`, or online scanners like MXToolbox or Hardenize.
Domain Security Disclaimer
The score reflects the implementation of public-facing security protocols.
- A high score does not guarantee immunity from application-level vulnerabilities (SQLi, XSS).
- Records like DMARC require ongoing monitoring (RUA/RUF reports) to be fully effective.
- Ensure all subdomains are also covered by these security measures.
Search topics covered
- domain security health checker
- spf dkim dmarc setup audit
- dnssec verification tool
- email spoofing prevention audit
- hsts and ssl security score
- website domain hardening tool
- CAA record checker
- brand protection security audit
- dns hijacking prevention tool
- phishing protection domain records
- mail server security health check
- it security domain scorecard
- cybersecurity dns audit
- domain trust rating tool
- web encryption best practices
How to use this checker
Input Your Domain
Enter your primary business domain (e.g., example.com). This provides context for the audit and allows you to track the security posture of specific digital assets over time.
Audit Email Protection
Check your SPF, DKIM, and DMARC settings. SPF defines who can send mail on your behalf. DKIM signs your mail cryptographically. DMARC tells receiving servers what to do if the first two fail. Without these, attackers can easily send "Fake" emails from your domain to your customers.
Verify DNS Integrity
Select if you have DNSSEC and CAA records. DNSSEC prevents attackers from redirecting your traffic to a malicious server. CAA (Certificate Authority Authorization) prevents unauthorized parties from issuing SSL certificates for your domain.
Review Web Encryption
Ensure you have HTTPS active and check for the HSTS (HTTP Strict Transport Security) header. HSTS is a critical "Lock" that prevents users from accidentally connecting to your site over an unencrypted connection, even if they type `http://` in the browser.
Analyze Health Score
The tool generates a percentage score. 100% means you have implemented all major recommended domain security headers and records. A low score indicates your domain is at high risk of being used for phishing or being redirected by attackers.
Follow Remediation Steps
Use the "Remediation Plan" to fix specific gaps. Most of these fixes involve adding simple TXT or DS records to your DNS manager (e.g., Cloudflare, GoDaddy, or Route53). Re-run the audit once the records have propagated.
Advantages of this checker
Prevents Brand Hijacking
By focusing on DMARC and DNSSEC, the tool helps you identify the exact gaps that attackers use to impersonate your brand and steal customer credentials.
Multi-Vector Audit
Unlike single-purpose tools, this checker covers Email, DNS, and Web security in one interface, providing a holistic view of your domain's perimeter defense.
Quantified Trust Level
The percentage score provides a clear KPI for IT teams. "Improving domain health from 40% to 90%" is a powerful metric for quarterly security reports.
Actionable DNS Advice
The tool doesn't just say a record is missing; it explains the impact of that record and provides the standard configuration path for implementation.
Supports Compliance (SOC2/ISO)
Domain security is a core requirement for many compliance frameworks. This tool helps you verify your baseline before a formal auditor arrives.
Rapid Perimeter Check
Perform a non-invasive audit of any domain in seconds. Ideal for evaluating the security of partners, vendors, or competitors during due diligence.
Governing bodies & standards
Q&A
What is DMARC?
Domain-based Message Authentication, Reporting, and Conformance. It's an email validation system that detects and prevents email spoofing.
Why do I need DNSSEC?
It adds a layer of security to the DNS process by providing cryptographic authentication of DNS data, preventing "Man-in-the-Middle" attacks.
Is SSL enough for web security?
No. SSL (HTTPS) encrypts traffic, but HSTS is needed to ensure the browser never attempts an unencrypted connection.
What is a CAA record?
A record that tells Certificate Authorities which of them are allowed to issue certificates for your domain, preventing "Shadow SSL" certificates.
How long does DNS propagation take?
Changes usually take 1-2 hours, but can take up to 48 hours depending on the TTL (Time to Live) settings of your records.