SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
opse-edu.com
SSL/TLS Certificate
SSL/TLS Certificate for opse-edu.com
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- opse-edu.com
- Valid from
- Sep 14, 2026
- Valid until
- Mar 31, 2027 (192 days remaining)
- Public key
- RSA 2048-bit
- Serial
- F6D6F3CD135E381CA7D477457B7C820B
- SHA-256 fingerprint
- B8:85:F3:22:7C:3B:12:D0:C7:F7:6E:CB:DB:8A:1F:73:5F:82:E0:70:60:EB:57:09:3B:DD:62:17:4C:D0:EF:16
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by opse-edu.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch opse-edu.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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