SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

nyu.edu

SSL/TLS Certificate

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SSL/TLS Certificate for nyu.edu

Valid
Issued by (CA)
Internet2
Subject
www.nyu.edu
Valid from
Sep 7, 2025
Valid until
Oct 8, 2026 (78 days remaining)
Public key
RSA 4096-bit
Serial
D914BAD16B073649ED09975DEEF78EFC
SHA-256 fingerprint
D7:C9:A1:78:62:F4:EF:10:D4:82:12:1F:68:BA:1E:02:BC:07:B4:CC:68:01:39:6D:A4:47:57:EC:A7:06:92:23
Chain
InCommon RSA Server CA 2 → USERTrust RSA Certification Authority → AAA Certificate Services
Subject Alternative Names (25)
911memory.nyu.edu, alumni.nyu.edu, cmsauthor.nyu.edu, dental.nyu.edu, drive.nyu.edu, gallatin.nyu.edu, giph.nyu.edu, giving.nyu.edu, googlechat.nyu.edu, googlemeet.nyu.edu, mail.nyu.edu, nyu.edu, projtrak.home.nyu.edu, psych.nyu.edu, security.nyu.edu, socialwork.nyu.edu, watch.nyu.edu, web.home.nyu.edu, web.home.syr.nyu.edu, www.alumni.nyu.edu, www.dental.nyu.edu, www.econ.nyu.edu, www.gallatin.nyu.edu, www.nyu.edu, www.psych.nyu.edu

Certificate Authority Authorization (CAA)

CAA restricts issuance to amazon.com, digicert.com, emsign.com, emudhra.com, godaddy.com, letsencrypt.org, pki.goog, sectigo.com; we couldn't map the serving CA (Internet2) to one of these identifiers.

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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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