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 ns-i.net
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.ns-i.net
- Valid from
- Jul 21, 2026
- Valid until
- Oct 19, 2026 (41 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0591CED681B9FA6C966D028683D7765AE146
- SHA-256 fingerprint
- FF:02:43:48:5D:F0:D0:78:BC:9C:31:31:3D:9C:E8:F7:C7:A6:2E:56:22:37:F9:A6:C9:83:00:95:C9:66:EB:41
- 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.
Never get surprised by ns-i.net's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ns-i.net 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.