SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
kontur-extern.ru
SSL/TLS Certificate
SSL/TLS Certificate for kontur-extern.ru
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- kontur.site
- Valid from
- Oct 16, 2026
- Valid until
- Jan 14, 2027 (87 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06A0CB44BDAECD8EDEEF2BA5BD5E51982130
- SHA-256 fingerprint
- DE:F3:F1:AF:47:8E:BC:50:1D:42:B4:97:8F:C8:95:6F:5B:47:AC:00:3C:34:87:2D:FA:45:CE:4B:49:F4:3B:D5
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
We've observed 1 previous certificate for this host. This certificate has been served since Oct 19, 2026.
Never get surprised by kontur-extern.ru's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch kontur-extern.ru 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, 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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