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 nu-plan.com

Valid
Issued by (CA)
Let's Encrypt
Subject
*.nu-plan.com
Valid from
Aug 17, 2026
Valid until
Nov 15, 2026 (68 days remaining)
Public key
RSA 2048-bit
Serial
066B2FCE10D88DCDFFE587D547EF0834B35D
SHA-256 fingerprint
B3:A2:9B:04:6A:BC:6F:5A:3F:99:31:FB:92:31:DF:4D:D3:CC:E3:BE:E3:CF:0B:69:3B:4F:EA:52:6B:73:AA:BF
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (2)
*.nu-plan.com, nu-plan.com

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

Never get surprised by nu-plan.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch nu-plan.com 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.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.