SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for br-s.cn
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- *.br-s.cn
- Valid from
- Mar 9, 2026
- Valid until
- Mar 29, 2027 (205 days remaining)
- Public key
- EC 256-bit
- Serial
- 67E9380B116049FF4092D5EFA3CD07B3
- SHA-256 fingerprint
- 2E:8A:03:FE:57:39:D9:12:6F:A3:24:EB:44:21:BC:A4:16:85:6E:70:69:8A:A1:51:15:BC:85:B4:C6:53:94:70
- Chain
- Sectigo Public Server Authentication CA DV E36 → Sectigo Public Server Authentication Root E46 → USERTrust ECC 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 br-s.cn's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch br-s.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, 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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