SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
avtech-university.com
SSL/TLS Certificate
SSL/TLS Certificate for avtech-university.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- avtech-university.com
- Valid from
- Oct 5, 2026
- Valid until
- Jan 3, 2027 (78 days remaining)
- Public key
- EC 256-bit
- Serial
- 0659CFA0CA25EE728C624F2374AFEB53EF3B
- SHA-256 fingerprint
- BC:34:CE:AC:45:58:4C:71:35:E5:C1:31:53:E8:66:81:BC:38:95:45:F8:1B:C9:9A:F5:3B:83:C7:C8:39:1F:2D
- Chain
- YE2 → Root YE → ISRG Root X2 → 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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