SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
us-patente.com
SSL/TLS Certificate
SSL/TLS Certificate for us-patente.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- us-patente.com
- Valid from
- Sep 1, 2026
- Valid until
- Nov 30, 2026 (57 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 06DB20491012EA229983B4C071FA67B5312B
- SHA-256 fingerprint
- 4D:41:51:D7:17:D9:39:A4:27:1B:FC:47:A0:7A:3C:D3:2E:4A:77:AB:E9:A5:1B:2E:C2:29:0A:BD:3B:4D:2B:C3
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).
We've observed 1 previous certificate for this host. This certificate has been served since Sep 14, 2026.
Never get surprised by us-patente.com'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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