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 aemisegger-ag.ch

Hostname mismatch
Issued by (CA)
Let's Encrypt
Subject
antiqua.sui-inter.net
Valid from
Jun 25, 2026
Valid until
Sep 23, 2026 (58 days remaining)
Public key
RSA 2048-bit
Serial
05B63DFC9652BED04D8DFD0239BE65E097D7
SHA-256 fingerprint
0A:20:17:8D:1B:81:F8:2B:FF:B5:1A:B0:C9:4B:BE:82:E2:FE:E5:7C:72:47:88:A3:50:C6:A7:DA:B2:FB:BB:4A
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (2)
antiqua.sui-inter.net, webmail.antiqua.sui-inter.net

Certificate Authority Authorization (CAA)

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

This certificate has been served since Jul 25, 2026.

Never get surprised by aemisegger-ag.ch's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch aemisegger-ag.ch 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.