SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
mock-server.com
SSL/TLS Certificate
SSL/TLS Certificate for mock-server.com
Valid- Issued by (CA)
- Amazon
- Subject
- mock-server.com
- Valid from
- Jul 19, 2026
- Valid until
- Feb 1, 2027 (120 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 023EDA0E1B4C6AB34F4797AF6B4499C7
- SHA-256 fingerprint
- B7:BC:22:C6:A2:F5:D6:49:9D:5E:02:48:DC:54:A3:41:AE:8D:8A:F4:8E:BE:11:7C:D7:76:C6:9E:D5:12:F3:C5
- Chain
- Amazon RSA 2048 M04 → Amazon Root CA 1 → Starfield Services Root Certificate Authority - G2
Certificate Authority Authorization (CAA)
The serving CA (Amazon) is authorized by this domain's CAA records (amazon.com).
Never get surprised by mock-server.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch mock-server.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.
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