SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
nacis-shanghai.com
SSL/TLS Certificate
SSL/TLS Certificate for nacis-shanghai.com
Expired- Issued by (CA)
- ZeroSSL GmbH
- Subject
- nacis-shanghai.com
- Valid from
- Jul 1, 2026
- Valid until
- Sep 29, 2026 (expired 37 days ago)
- Public key
- RSA 2048-bit
- Serial
- 25B561517D88210D0E65EF819F7444F8
- SHA-256 fingerprint
- FE:78:27:9C:1B:69:FD:14:53:A8:CD:A3:DA:AF:64:56:F0:C0:BA:37:23:C4:2A:04:95:93:5B:1D:2A:31:AF:4F
- Chain
- ZeroSSL RSA DV SSL CA 2 → 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 nacis-shanghai.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch nacis-shanghai.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, CNAME, TXT 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.