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 sefir-elearning.com

Valid
Issued by (CA)
Google Trust Services
Subject
sefir-elearning.com
Valid from
Sep 7, 2026
Valid until
Dec 6, 2026 (51 days remaining)
Public key
RSA 2048-bit
Serial
5A42924D7DA0293D1351635F6E62494F
SHA-256 fingerprint
F3:10:70:A4:25:78:41:83:81:EA:8D:15:74:32:BD:5A:3E:21:52:14:02:32:D9:DB:E6:2C:CD:F7:73:84:8E:A3
Chain
WR1 → GTS Root R1
Subject Alternative Names (2)
sefir-elearning.com, www.sefir-elearning.com

Certificate Authority Authorization (CAA)

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

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Uptime

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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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