SSL/TLS Certificate Lookup

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

nstein-exchange.com

SSL/TLS Certificate

Whois RDAP DNS Records Certificate Uptime Diagnostics History Hide Contact Info

SSL/TLS Certificate for nstein-exchange.com

Hostname mismatch

Issued by (CA): Sectigo Limited
Subject: rdgw.opentext.com
Valid from: Jul 17, 2026
Valid until: Jan 31, 2027 (145 days remaining)
Public key: RSA 2048-bit
Serial: C58719D496FB9865D5CA66ED086F30DE
SHA-256 fingerprint: 74:F3:31:B7:79:C7:4A:1D:99:92:E9:07:3A:88:CE:74:A7:31:0E:29:C8:85:F2:30:49:55:8E:F1:60:21:8C:11
Chain: Sectigo Public Server Authentication CA OV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority

Subject Alternative Names (86)

*.bricata.com, *.captaris.com, *.catalystsecure.com, *.cordys.com, *.guidancesoftware.com, *.gxs.com, *.infograph.com, *.magellan.com, *.opentext.asia, *.opentext.be, *.opentext.ca, *.opentext.ch, *.opentext.co.nz, *.opentext.com, *.opentext.eu, *.opentext.fi, *.opentext.ie, *.opentext.lu, *.opentext.net, *.opentext.no, *.opentext.sg, *.opentext.us, *.recommind.com, *.thefaxguys.com, *.webroot.com, *.xmedius.com, *.xmediusfax.com, blogs.opentext.de, blogs.opentext.jp, bricata.com, caseshare.com, catalystsecure.com, chat.anx.com, guidancesoftware.com, italia.opentext.com, liaison.com, magellan.com, mail-store.co.uk, opentext.asia, opentext.be, opentext.ca, opentext.ch, opentext.co.nz, opentext.co.uk, opentext.com, opentext.com.au, opentext.com.br, opentext.de, opentext.es, opentext.eu, opentext.fi, opentext.fr, opentext.ie, opentext.jp, opentext.lu, opentext.net, opentext.nl, opentext.no, opentext.se, opentext.sg, opentext.us, rdgw.opentext.com, support.xmedius.com, support.xmediusfax.com, www.liaison.com, www.mailstore.fr, www.opentext.asia, www.opentext.be, www.opentext.ca, www.opentext.co.nz, www.opentext.co.uk, www.opentext.com.au, www.opentext.com.br, www.opentext.de, www.opentext.eu, www.opentext.fi, www.opentext.fr, www.opentext.ie, www.opentext.jp, www.opentext.lu, www.opentext.nl, www.opentext.no, www.opentext.se, www.opentext.sg, www.opentext.us, www.opentextcybersecurity.com

Certificate Authority Authorization (CAA)

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

Never get surprised by nstein-exchange.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch nstein-exchange.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.