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 sz-antares.ru

Valid
Issued by (CA)
Let's Encrypt
Subject
sz-antares.ru
Valid from
Jun 9, 2026
Valid until
Sep 7, 2026 (42 days remaining)
Public key
RSA 3072-bit
Serial
064E60A5F9C680A0EE427ADFA67A34A81154
SHA-256 fingerprint
9B:8C:A9:6F:F1:BE:55:8B:E6:FD:DA:A5:F5:C6:F9:27:DD:BB:BD:E3:0D:55:A4:F3:64:01:E8:48:9C:12:4B:54
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (2)
sz-antares.ru, www.sz-antares.ru

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

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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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