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 fapa.si

Valid
Issued by (CA)
Let's Encrypt
Subject
fapa.si
Valid from
Oct 8, 2026
Valid until
Jan 6, 2027 (86 days remaining)
Public key
RSA 2048-bit
Serial
05B5FBB528DA8A504E8C565B25D182E2F454
SHA-256 fingerprint
70:37:12:2C:EF:E2:CC:7B:14:CF:C6:BE:5F:C6:7A:90:52:29:28:B9:27:DF:15:0A:B7:7B:92:15:1A:06:02:4C
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (1)
fapa.si

Certificate Authority Authorization (CAA)

The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org, pki.goog, sectigo.com).

We've observed 1 previous certificate for this host. This certificate has been served since Oct 11, 2026.

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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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