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-soft.com

Valid
Issued by (CA)
Let's Encrypt
Subject
sz-soft.com
Valid from
Aug 21, 2026
Valid until
Nov 19, 2026 (53 days remaining)
Public key
RSA 2048-bit
Serial
0560894BFE7D12CE1B9D84D5787D6AF87481
SHA-256 fingerprint
AA:C2:2C:E6:96:50:B8:E8:DD:7D:7F:80:3D:6B:43:C6:4B:42:95:7C:9B:4F:84:45:0C:A9:3E:2D:4A:69:79:41
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
sz-soft.com, www.sz-soft.com

Certificate Authority Authorization (CAA)

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

This certificate has been served since Aug 28, 2026.

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This is today's certificate. Turn on monitoring and we'll watch sz-soft.com 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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