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 az-system.it

Valid
Issued by (CA)
Actalis S.p.A.
Subject
*.az-system.it
Valid from
Dec 6, 2025
Valid until
Jan 6, 2027 (125 days remaining)
Public key
RSA 2048-bit
Serial
4351414578D80E482F311EA575DC7AED
SHA-256 fingerprint
2C:F3:7B:97:2B:BE:65:CF:9C:FC:76:C7:5F:C7:81:42:A7:BC:D9:F0:96:14:19:D9:07:15:B2:44:62:47:57:18
Chain
Actalis Domain Validation Server CA G3 → Actalis Authentication Root CA
Subject Alternative Names (2)
*.az-system.it, az-system.it

Certificate Authority Authorization (CAA)

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

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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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