SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sz-base.com
SSL/TLS Certificate
SSL/TLS Certificate for sz-base.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- sz-base.com
- Valid from
- Jul 23, 2026
- Valid until
- Oct 21, 2026 (69 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 050D150FC4A65CFB96920B118353D94CA8BC
- SHA-256 fingerprint
- D4:7E:5C:5F:3A:10:F3:3B:2B:3E:F0:73:72:1C:66:E1:FD:99:9E:68:BB:10:7F:D8:1C:0A:E2:78:C8:9A:94:F0
- 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.
Never get surprised by sz-base.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch sz-base.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.