SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
kill-switch.site
SSL/TLS Certificate
SSL/TLS Certificate for kill-switch.site
Valid- Issued by (CA)
- SSL Corporation
- Subject
- kill-switch.site
- Valid from
- Sep 14, 2026
- Valid until
- Mar 31, 2027 (194 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 629BD5D74D05FBECD8EE486F9E1A2C92
- SHA-256 fingerprint
- 48:51:B8:68:ED:92:B6:66:7D:40:13:B9:99:DC:67:38:D3:F8:BA:C5:A7:82:F3:7F:A7:63:C6:EB:11:02:5E:53
- Chain
- SSL.com TLS Issuing RSA CA R1 → SSL.com TLS RSA Root CA 2022 → SecureTrust CA
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by kill-switch.site's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch kill-switch.site 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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