SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
greg-sinclair.com
SSL/TLS Certificate
SSL/TLS Certificate for greg-sinclair.com
Self-signed- Issued by (CA)
- srv25.swhc.ca
- Subject
- srv25.swhc.ca
- Valid from
- Sep 25, 2026
- Valid until
- Sep 25, 2027 (342 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 690B08CAC22CF066093D43605A2FF93622894CC2
- SHA-256 fingerprint
- 20:FF:90:A5:1C:E8:58:C8:BE:07:42:71:4B:66:AA:31:94:08:BA:BE:00:CD:82:AA:04:9F:38:94:1E:16:5F:C7
- Chain
- srv25.swhc.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 5, 2026.
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This is today's certificate. Turn on monitoring and we'll watch greg-sinclair.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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