SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
azzurro.cz
SSL/TLS Certificate
SSL/TLS Certificate for azzurro.cz
Valid- Issued by (CA)
- Alpiro s.r.o.
- Subject
- *.azzurro.cz
- Valid from
- Jul 24, 2026
- Valid until
- Feb 7, 2027 (139 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 042C969B44354C07650F49725601EECA
- SHA-256 fingerprint
- 63:6A:B6:D3:22:1A:77:11:83:2D:8E:D9:12:9C:8C:20:4D:07:51:DD:1C:47:F2:CF:8A:CB:30:B5:A0:F8:A8:7D
- Chain
- Alpiro RSA DV SSL CA 2 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Certificate Authority Authorization (CAA)
CAA restricts issuance to globalsign.com, letsencrypt.org, trust-provider.com; we couldn't map the serving CA (Alpiro s.r.o.) to one of these identifiers.
Never get surprised by azzurro.cz's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch azzurro.cz 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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