SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
masumi.life
SSL/TLS Certificate
SSL/TLS Certificate for masumi.life
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- masumi.life
- Valid from
- Oct 17, 2026
- Valid until
- Jan 15, 2027 (86 days remaining)
- Public key
- EC 256-bit
- Serial
- 0534ED437E5E05EBBF73C601B1137F0171F1
- SHA-256 fingerprint
- BF:7C:6C:D8:26:CE:EA:8F:CA:BA:8A:CB:03:04:B9:F6:1C:AB:96:C8:BB:25:49:41:C1:B7:76:96:E9:13:0A:1B
- 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.
This certificate has been served since Oct 1, 2026.
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Uptime
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DNS changes
We watch NS, MX, CAA, CNAME, TXT 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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