SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
pku-care.com
SSL/TLS Certificate
SSL/TLS Certificate for pku-care.com
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- pku-care.com
- Valid from
- Sep 23, 2026
- Valid until
- Mar 22, 2027 (179 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 8447CD1799D6E930BF6762C3B8CBBC59
- SHA-256 fingerprint
- E6:C2:74:30:26:C3:1D:5F:53:79:AF:B1:41:C6:02:76:1F:FF:DE:3F:E1:BD:0E:C9:18:D1:E9:81:6F:3B:0D:B9
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by pku-care.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch pku-care.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.