SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
flu-shot-facts.com
SSL/TLS Certificate
SSL/TLS Certificate for flu-shot-facts.com
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- my-flu-shot.com
- Valid from
- Jul 30, 2026
- Valid until
- Feb 13, 2027 (190 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 22719CC3C6B747B03CFDD46552F1050E
- SHA-256 fingerprint
- DB:89:6A:BE:74:10:A1:EC:1B:5E:FB:35:CD:F7:3E:44:F0:C2:28:6D:2B:FA:3D:77:C3:F7:13:D9:D8:ED:4A:F3
- Chain
- Sectigo Public Server Authentication CA OV R40 → Sectigo Public Server Authentication Root R46
Certificate Authority Authorization (CAA)
The serving CA (Sectigo Limited) is authorized by this domain's CAA records (digicert.com, entrust.net, sectigo.com).
Never get surprised by flu-shot-facts.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch flu-shot-facts.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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