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 d-log.pt
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- d-log.pt
- Valid from
- Sep 23, 2026
- Valid until
- Dec 22, 2026 (80 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06042F48059976FEE9FFFFD1582D3DE8A57E
- SHA-256 fingerprint
- A7:6C:BD:42:EA:11:EF:B0:8E:71:4C:18:8A:C9:4E:AE:C8:84:E4:81:0E:0D:E4:4B:06:AF:67:F0:C8:DF:0D:80
- Chain
- YR1 → Root YR → ISRG Root X1
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 Sep 24, 2026.
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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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