SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
qr-scan.it
SSL/TLS Certificate
SSL/TLS Certificate for qr-scan.it
Valid- Issued by (CA)
- Google Trust Services
- Subject
- inf.ooo
- Valid from
- Aug 13, 2026
- Valid until
- Nov 11, 2026 (39 days remaining)
- Public key
- RSA 2048-bit
- Serial
- D21356CA2D38C28A1001C764229C5F3C
- SHA-256 fingerprint
- 31:79:DD:1F:4B:9A:76:48:B6:21:05:D0:81:F2:2C:20:D6:4A:FF:B4:1D:BB:3A:8F:F1:8C:66:10:8C:2B:5A:1D
- Chain
- WR3 → GTS Root R1
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 18, 2026.
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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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