Hostname validity
The certificate subject or SAN list must cover the exact hostname visitors use.
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Check certificate validity, issuer, subject, expiry date and remaining lifetime.
An SSL certificate encrypts traffic and proves the identity of a website. Expired or mismatched certificates trigger browser warnings.
Run this check after installing SSL, moving hosting or before a certificate renewal deadline.
Three signals that matter most when interpreting this tool.
The certificate subject or SAN list must cover the exact hostname visitors use.
A trusted issuer and complete intermediate chain prevent browser certificate warnings.
Renew well before the displayed expiry date and verify the new certificate after installation.
A certificate can be unexpired and still fail because its hostname does not match, an intermediate certificate is missing or the chain terminates at an untrusted authority. Review identity, issuer and validity together.
HostGraber hosting includes HTTPS options, while dedicated SSL products support broader validation needs. After installation, test every public hostname and redirect path, then schedule monitoring so renewal problems are found before visitors see a warning.
Network and TLS diagnostics are snapshots of a specific path and time. Routing, firewalls, CDN layers, certificate chains and regional peering can change what one test server sees. Repeat important checks and compare them with application monitoring before drawing a conclusion.
When troubleshooting production services, capture the hostname, destination, time of test and expected behaviour. That context makes latency, routing or certificate results far more actionable.
Found a configuration problem or planning your next deployment? These HostGraber services are the most relevant next steps for this tool.
Provide the domain, IP address, workload, server specification or calculator inputs requested by the tool.
HostGraber validates the input and processes the request using the appropriate DNS, network, SSL or calculation logic.
Review the output, copy it when needed, compare related checks and use the linked HostGraber resources for the next step.
Clear answers for common ssl checker questions.
Automated certificates commonly renew around 30 days before expiry. Manual certificates should be scheduled with a safe operational buffer.
Each hostname, including www and subdomains, must appear in the certificate subject alternative names.
SSL encrypts traffic and authenticates the endpoint; application updates, access controls and malware protection are still required.
Generate a 2048-bit RSA private key and certificate signing request in your browser session.
Open tool →⌘Inspect A, AAAA, CNAME, MX, TXT, NS and SOA records for any domain.
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