SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
fcd66ab0dba8569de00d54bf05982ff3.org
SSL/TLS Certificate
SSL/TLS Certificate for fcd66ab0dba8569de00d54bf05982ff3.org
No TLS certificate could be retrieved (A063C485FFFF0000:error:0A000438:SSL routines:ssl3_read_bytes:tlsv1 alert internal error:../deps/openssl/openssl/ssl/record/rec_layer_s3.c:918:SSL alert number 80 ).
The domain may not serve HTTPS, may be unreachable, or may not present a certificate on port 443. You can still review its DNS records.
Never get surprised by fcd66ab0dba8569de00d54bf05982ff3.org's certificate expiring
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Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
DNS changes
We watch NS, MX, CAA, CNAME, TXT and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
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