SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
o-wai-sa.com
SSL/TLS Certificate
SSL/TLS Certificate for o-wai-sa.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- mail.o-wai-sa.com
- Valid from
- Sep 3, 2026
- Valid until
- Dec 2, 2026 (46 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05B83DB3A48592444C3F34F3DD87B5D01987
- SHA-256 fingerprint
- 3A:0B:03:1F:7D:58:A3:81:04:0B:2D:5F:F1:B1:CB:77:4A:00:21:97:CB:9A:72:56:BE:2B:B7:76:D5:8F:8A:72
- Chain
- YR2 → 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 30, 2026.
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This is today's certificate. Turn on monitoring and we'll watch o-wai-sa.com continuously, notifying you the moment anything moves across all three signals:
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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