Welcome to the XiaTools Domain Checker, designed to provide a complete diagnostic report on any domain name across the web. This utility gathers and synthesizes critical technical parameters—including WHOIS data, DNS configurations, hosting infrastructure, and security posture—into a single interface.
What is it
The Domain Checker is an all-in-one reconnaissance and diagnostic tool that queries multiple data sources simultaneously to evaluate the health, security, and configuration of a target domain. Instead of using separate utilities for DNS lookups, SSL verification, and technology detection, this tool consolidates everything into a unified dashboard.
Why it matters
Website owners, developers, and IT administrators need a holistic view of their digital assets to ensure continuous uptime, robust security, and optimal performance. Misconfigured DNS records can break email delivery, expired SSL certificates immediately erode user trust, and outdated software versions expose infrastructure to automated exploits. By performing regular checks, you can proactively identify vulnerabilities, verify migrations, and troubleshoot connectivity issues before they impact your users or search engine rankings.
How to use this tool
- Navigate to the XiaTools Domain Checker page.
- Locate the search input box at the top of the page.
- Enter your target domain name (for example,
example.comorsub.example.com). - Press the Check button to initiate the multi-point diagnostic scan.
- Review the categorized results displayed in the comprehensive report below.
How to read the results
When you scan a domain such as example.com, the tool breaks down the findings into several distinct technical categories.
The WHOIS and Domain Age section displays the registrar, creation date, and expiration date. For example.com, you might see a creation date from 1995, indicating an established domain with high historical authority.
The DNS Records section lists active A, AAAA, MX, TXT, and CNAME entries. An A record pointing to 93.184.216.34 links the domain to an IPv4 address, while MX records direct inbound mail to designated mail servers.
The Hosting and IP Network details reveal the autonomous system number (ASN), hosting provider, and geographic location of the server responding to requests.
The SSL Certificate module inspects the active HTTPS configuration, showing the issuer (e.g., Let's Encrypt or DigiCert), validity period, and potential trust chain errors.
The HTTP Security Headers section highlights the presence or absence of protective headers. A secure configuration will display headers like Strict-Transport-Security and Content-Security-Policy.
The Website Technology and Tracking IDs section detects Content Management Systems (like WordPress), JavaScript libraries, and analytics snippets such as Google Analytics.
The Email Security evaluation checks SPF, DKIM, and DMARC record implementations, helping you verify that your domain is protected against spoofing.
The Google PageSpeed and Core Web Vitals score assesses loading performance, measuring metrics like Largest Contentful Paint (LCP) and Cumulative Layout Shift (CLS).
Finally, the Safety Status and Traffic Range indicators query threat intelligence feeds to confirm the domain is not blacklisted for malware or phishing, while offering an estimated traffic bracket based on public visibility metrics.
Common problems and how to fix them
Missing SPF or DMARC Records
If the email security audit flags a lack of proper TXT records, your outbound emails may land in spam folders. You must publish correct records in your DNS zone.
example.com. IN TXT "v=spf1 include:_spf.google.com ~all"
_dmarc.example.com. IN TXT "v=DMARC1; p=reject; sp=reject; rua=mailto:admin@example.com"
Expired or Untrusted SSL Certificate
If the SSL checker warns of an untrusted certificate or imminent expiration, your web server is serving an invalid chain. Renew the certificate through your certificate authority and ensure intermediate certificates are included in the server block configuration.
Missing Security Headers
An insecure header report indicates your site lacks protection against clickjacking and cross-site scripting. Configure your web server (such as Nginx or Apache) to inject standard defensive headers on every response.
add_header X-Frame-Options "SAMEORIGIN" always;
add_header X-Content-Type-Options "nosniff" always;
Best practices
Run routine checks on your primary and secondary domains on a monthly basis to catch configuration drift early. Monitor domain expiration dates well in advance to prevent accidental lapses in ownership that could result in domain hijacking. Ensure that all DNS changes use appropriate Time-To-Live (TTL) values before executing migrations to minimize propagation delays. Always pair infrastructural scans with continuous uptime monitoring to maintain maximum availability for your audience.