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 toste.dk
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- bitwise-it.dk
- Valid from
- Nov 4, 2022
- Valid until
- Feb 2, 2023 (expired 1276 days ago)
- Public key
- RSA 2048-bit
- Serial
- 03A711CF388C3D461546B2C629FA8360AE5D
- SHA-256 fingerprint
- 72:27:CD:D6:6B:60:E1:52:86:3F:8F:28:36:A1:BE:93:0E:B7:47:7C:1F:D6:E1:81:43:F2:31:4F:76:F2:F6:C5
- Chain
- R3 → ISRG Root X1
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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