SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
on-tech.it
SSL/TLS Certificate
SSL/TLS Certificate for on-tech.it
Valid- Issued by (CA)
- Google Trust Services
- Subject
- on-tech.it
- Valid from
- Oct 7, 2026
- Valid until
- Jan 5, 2027 (87 days remaining)
- Public key
- EC 256-bit
- Serial
- 1BFBCE90D39EFE40135DB9A3F02D99CF
- SHA-256 fingerprint
- 45:EA:1D:95:89:74:31:2C:20:A9:22:96:52:BB:36:26:2E:65:A9:AC:58:4C:CB:31:E3:C0:E1:EC:82:B4:D5:41
- Chain
- WE1 → GTS Root R4
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by on-tech.it's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch on-tech.it 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.