SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
alfasistemi.net
SSL/TLS Certificate
SSL/TLS Certificate for alfasistemi.net
Valid- Issued by (CA)
- Actalis S.p.A.
- Subject
- *.alfasistemi.net
- Valid from
- Sep 20, 2026
- Valid until
- Apr 7, 2027 (183 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 2169D58FB11A501D85D4172A347AE73C
- SHA-256 fingerprint
- 70:4F:E7:47:7F:1F:59:9F:5D:E7:21:CE:96:2D:82:36:A7:51:C2:86:3F:DB:50:04:90:32:03:BB:01:84:89:80
- Chain
- Actalis Domain Validated TLS Server RSA CA 2025 → Actalis TLS Server RSA Root CA 2025 → Actalis Authentication Root CA
Certificate Authority Authorization (CAA)
CAA restricts issuance to actalis.it, sectigo.com; we couldn't map the serving CA (Actalis S.p.A.) to one of these identifiers.
This certificate has been served since Aug 1, 2026.
Never get surprised by alfasistemi.net's certificate expiring
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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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