SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
x-eduqual.pt
SSL/TLS Certificate
SSL/TLS Certificate for x-eduqual.pt
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- mail.x-eduqual.pt
- Valid from
- Sep 4, 2026
- Valid until
- Dec 3, 2026 (72 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 0544F4199E4DC5A29421A7BDFCAAF47A4503
- SHA-256 fingerprint
- FE:7A:82:79:A8:1E:D1:BF:35:5A:6B:8F:18:F9:05:93:EA:53:FF:51:17:DF:A2:C8:CB:3F:A5:66:4C:F5:C0:D6
- 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.
We've observed 1 previous certificate for this host. This certificate has been served since Sep 21, 2026.
Never get surprised by x-eduqual.pt's certificate expiring
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Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
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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