SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
size-up.io
SSL/TLS Certificate
SSL/TLS Certificate for size-up.io
Valid- Issued by (CA)
- Gandi SAS
- Subject
- size-up.io
- Valid from
- May 5, 2026
- Valid until
- Nov 19, 2026 (51 days remaining)
- Public key
- EC 256-bit
- Serial
- 0D240161CCA597B1C74C6BA5FD49BA48
- SHA-256 fingerprint
- 8E:47:E0:1F:7B:FE:56:69:AE:26:F8:0E:3C:F5:A8:DF:65:42:D5:A1:3F:16:B3:7B:8E:91:D7:7A:8E:C3:F9:59
- Chain
- GandiCert → DigiCert Global Root G2
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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Uptime
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DNS changes
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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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