SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for osp.se
Valid- Issued by (CA)
- Google Trust Services
- Subject
- osp.se
- Valid from
- Jul 21, 2026
- Valid until
- Oct 19, 2026 (89 days remaining)
- Public key
- EC 256-bit
- Serial
- C65A4BEF26F0CB8113C48D27C4A1D330
- SHA-256 fingerprint
- 47:CD:1B:55:57:EC:85:8A:C0:AB:29:C3:40:CF:ED:47:C8:7A:97:1C:EB:3A:05:37:BC:BC:73:27:43:2D:9B:E8
- Chain
- WE1 → GTS Root R4
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
We watch NS, MX, CAA, DNSSEC, CNAME 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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