SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
rune-app.com
SSL/TLS Certificate
SSL/TLS Certificate for rune-app.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- rune-app.com
- Valid from
- Jul 20, 2026
- Valid until
- Oct 18, 2026 (79 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05D43761253B9F784917B81424DCA26183BF
- SHA-256 fingerprint
- C9:FB:0C:29:C4:5C:DB:67:37:16:1A:4D:A2:07:A9:C5:C1:02:4B:AE:73:FA:1C:CC:E3:96:CD:6C:DB:47:68:4F
- Chain
- YR1 → Root YR → ISRG Root X1
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 Jul 27, 2026.
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This is today's certificate. Turn on monitoring and we'll watch rune-app.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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