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 sagw.com
Untrusted chain- Issued by (CA)
- sagw-ADCS01-CA
- Subject
- webmail.sagw.com
- Valid from
- Mar 16, 2020
- Valid until
- Mar 10, 2045 (6704 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 6D000000043DCF2A7141CCDB6E000000000004
- SHA-256 fingerprint
- 29:7D:5F:52:56:CE:D9:CF:2A:68:F4:C2:DE:6F:19:B5:66:67:1E:4C:4C:9A:E8:1E:D4:A6:C8:43:1F:A0:4E:E0
- Chain
- —
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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This is today's certificate. Turn on monitoring and we'll watch sagw.com 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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