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 corona-arago.cat

Valid
Issued by (CA)
Let's Encrypt
Subject
corona-arago.cat
Valid from
Sep 16, 2026
Valid until
Dec 15, 2026 (81 days remaining)
Public key
EC 256-bit
Serial
059390D2C747E0AE0954CB04407571918F1F
SHA-256 fingerprint
71:20:11:F1:67:86:EE:19:39:5F:58:2D:1A:D6:3A:F3:8F:67:CF:58:4B:57:1A:BE:B5:BE:8A:27:C6:A5:37:A9
Chain
YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (2)
corona-arago.cat, www.corona-arago.cat

Certificate Authority Authorization (CAA)

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

Never get surprised by corona-arago.cat's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch corona-arago.cat 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.