SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
mief-tek.com
SSL/TLS Certificate
SSL/TLS Certificate for mief-tek.com
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- mief-tek.com
- Valid from
- Apr 9, 2026
- Valid until
- Jul 8, 2026 (expired 35 days ago)
- Public key
- RSA 3072-bit
- Serial
- 052DC5E4FFA923D38EDBC075D7C8E43F21A3
- SHA-256 fingerprint
- 82:95:5F:19:58:7C:3A:5D:D6:06:AD:9D:64:EC:D3:BA:ED:0A:9E:15:66:3A:BE:75:DB:AF:02:FA:21:A6:C8:42
- Chain
- R13 → 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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