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 one-g.it
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- one-g.it
- Valid from
- Jul 18, 2026
- Valid until
- Oct 16, 2026 (40 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05CDECEC502187E16E070C153EC85BEF3E3F
- SHA-256 fingerprint
- 45:D5:10:C8:A1:DA:13:76:2A:74:1C:69:01:BA:14:CE:F3:F9:F8:BA:53:EA:79:90:7D:15:FE:9B:5E:BB:CC:3A
- Chain
- YR1 → Root YR → ISRG Root X1
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 Sep 3, 2026.
Never get surprised by one-g.it's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch one-g.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.
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