SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
nginx-cn.net
SSL/TLS Certificate
SSL/TLS Certificate for nginx-cn.net
Valid- Issued by (CA)
- Amazon
- Subject
- www.f5.com.cn
- Valid from
- Sep 22, 2026
- Valid until
- Apr 7, 2027 (168 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 03E04576D175DDF6A2C62D296571AD81
- SHA-256 fingerprint
- 21:D6:DE:23:FD:04:5A:5B:10:6E:58:A3:C6:BB:EE:0D:46:7E:F1:D5:F7:FB:21:C3:7A:EE:2B:B6:C7:1A:A1:E3
- Chain
- Amazon RSA 2048 M01 → Amazon Root CA 1 → Starfield Services Root Certificate Authority - G2
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 6, 2026.
Never get surprised by nginx-cn.net's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch nginx-cn.net continuously, notifying you the moment anything moves across all three signals:
Uptime
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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.
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