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 redog-rgbasel.ch

Valid
Issued by (CA)
Let's Encrypt
Subject
redog-rgbasel.ch
Valid from
Oct 11, 2026
Valid until
Jan 9, 2027 (62 days remaining)
Public key
RSA 2048-bit
Serial
05B0A22E9845D96F71AAA9034C8224C55CDC
SHA-256 fingerprint
89:9F:69:2C:B3:34:23:85:6A:7A:66:46:BA:56:BA:B3:2E:11:9B:91:61:DF:15:9E:96:A5:BB:73:92:55:3E:07
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (2)
redog-rgbasel.ch, www.redog-rgbasel.ch

Certificate Authority Authorization (CAA)

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

Never get surprised by redog-rgbasel.ch's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch redog-rgbasel.ch continuously, notifying you the moment anything moves across all three signals:

Certificate monitor showing the issuer, expiry date, chain status, fingerprint, covered names, and a history of a rotation and an expiry warning

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, CNAME, TXT 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.