SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
saigai-navi.com
SSL/TLS Certificate
SSL/TLS Certificate for saigai-navi.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- saigai-navi.com
- Valid from
- Sep 15, 2026
- Valid until
- Dec 14, 2026 (67 days remaining)
- Public key
- EC 256-bit
- Serial
- 05CFDF3D77A4F391EEA0652420CA55E2CF08
- SHA-256 fingerprint
- 04:3A:C6:33:E4:7B:7A:D9:7D:D4:07:7F:12:97:BD:3B:B8:1A:0C:4F:C0:B8:5E:D3:45:5F:1A:C2:D8:10:8E:55
- Chain
- YE1 → 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 Sep 30, 2026.
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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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