Install Repair IT: tap then 'Add to Home Screen'.
When a website suddenly goes offline or critical business emails start bouncing to spam folders, the Domain Name System (DNS) is the first place you should look. Our Deep DNS tool allows webmasters, IT professionals, and business owners to pull live global domain records, bypassing local network caches to show you exactly how the internet sees your domain right now.
Email deliverability is one of the most common headaches for modern businesses. If your emails are landing in your clients' junk folders, it is likely due to misconfigured security records. Use our Advanced Tools tab to instantly verify your SPF (Sender Policy Framework) and DMARC records. These records prove to email providers like Gmail and Outlook that you are the genuine sender, protecting your domain from being used in phishing scams.
Our standard lookup fetches all primary DNS records in seconds. Check your A Records to verify your website is pointing to the correct server IP address, or review your MX Records to ensure your email hosting is routed properly. We also include advanced security checks like DNSSEC to ensure your domain hasn't been hijacked or spoofed at the root level.
Unlike your computer's command prompt, which caches old data, our tool queries global servers to give you the most up-to-date, real-time picture of your domain's health.
Take our tools offline. We offer a lightweight, portable Windows executable version of our Deep DNS tool, verified clean by Microsoft Security Intelligence.
We do not log, store, or sell your search queries. Your domain diagnostic tests are entirely private and processed instantly without requiring any user registration.
If the diagnostic tool reveals errors you aren't sure how to fix, our Web Hosting & IT experts can help you repair your domain configuration.
Contact Our IT Experts