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 rafu.ru
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- rafu.ru
- Valid from
- Sep 13, 2026
- Valid until
- Dec 12, 2026 (68 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 059BC62CF55D7B79C983BC5B42AA4E9F2711
- SHA-256 fingerprint
- 75:1C:A1:9B:AC:1F:C3:8F:5A:D8:B7:BC:D9:C3:0E:C7:03:B4:68:92:AB:0B:05:61:69:D3:F2:40:D2:C2:52:68
- 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 Sep 18, 2026.
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This is today's certificate. Turn on monitoring and we'll watch rafu.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, 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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