Regional SSL diagnostics
Compare certificate validity, issuer, TLS version, and resolved edge endpoints across country-labeled resolvers.
Enter a target and choose countries to compare.
Use this tool when HTTPS works in some markets but fails in others, after a CDN cutover, or when you suspect different regions are hitting different certificates.
It is especially useful for catching expired edge certificates, mismatched SAN coverage, or an unexpected issuer on one regional endpoint.
It resolves the hostname using a region-labeled resolver, then performs a TLS handshake against the resulting endpoint to compare certificate and protocol details.
Different regions may resolve to different CDN edges, load balancers, or origin clusters, and those endpoints can present different certificates or trust states.
No. This focuses on DNS resolution and TLS handshake only. Use URL Check when you also need HTTP status, headers, redirects, and response timing.