SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
platformscymru.co.uk
SSL/TLS Certificate
SSL/TLS Certificate for platformscymru.co.uk
Hostname mismatch- Issued by (CA)
- GlobalSign nv-sa
- Subject
- *.cymru1.org
- Valid from
- Feb 1, 2026
- Valid until
- Mar 5, 2027 (182 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 61E7F50EB2860C02CFCD9236
- SHA-256 fingerprint
- 9D:94:65:E8:0D:28:A4:B8:CB:47:81:0C:5A:2C:14:94:8A:1A:35:61:C8:41:6F:AF:D9:7E:ED:E5:23:5F:21:F9
- Chain
- GlobalSign GCC R6 AlphaSSL CA 2025 → GlobalSign
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Aug 8, 2026.
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Uptime
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DNS changes
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TLS certificate
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