LESS GUESSWORK, BETTER NEXT STEPS
Understand the answer.
A result is more useful when you know what it means. These guides explain how to run each check, read the answer and decide what to investigate next.
Each guide lives alongside its tool, so you can switch between checking a domain and understanding the result. No account is needed.
Website status
How to check if a website is down
Find out if a website is responding and what its server is saying.
Read the guide DNS lookupHow to read a DNS lookup
Look up the records that connect a domain to the internet.
Read the guide SSL checkerHow to check an HTTPS certificate
Verify HTTPS and check when a website’s certificate expires.
Read the guide Redirect checkerHow to trace a website redirect
Follow a URL from its first request to its final destination.
Read the guide Email DNS checkerHow to check MX, SPF and DMARC records
Find MX, SPF and DMARC records for your email domain.
Read the guide What’s my IP?How to understand your connection IP address
See your connection’s IP address and whether it uses IPv4 or IPv6.
Read the guide