SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
zxs-bbs.cn
SSL/TLS Certificate
SSL/TLS Certificate for zxs-bbs.cn
Valid- Issued by (CA)
- Asseco Data Systems S.A.
- Subject
- *.zxs-bbs.cn
- Valid from
- Sep 23, 2026
- Valid until
- Apr 10, 2027 (170 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 6329AA8104AC89202696AD16E1A3305A
- SHA-256 fingerprint
- 91:3D:82:D1:EC:DF:12:B5:4E:54:58:26:7C:DF:74:DA:56:94:A4:F5:79:41:FD:D7:2C:EA:F5:09:2D:19:8D:A4
- Chain
- Certum DV TLS G2 R39 CA → Certum Trusted Root CA → Certum Trusted Network CA
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Oct 18, 2026.
Never get surprised by zxs-bbs.cn's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch zxs-bbs.cn 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.