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 freifunk-naila.net

Valid
Issued by (CA)
Let's Encrypt
Subject
www.freifunk-naila.net
Valid from
Oct 1, 2026
Valid until
Dec 30, 2026 (70 days remaining)
Public key
RSA 2048-bit
Serial
05E5FB919A3C2EEB2D87D4B796974706869D
SHA-256 fingerprint
DE:AB:2C:ED:1A:E0:D2:C1:0C:39:E6:4D:E9:6B:61:B6:A4:64:F1:C3:D7:66:76:3C:D6:1D:28:9C:0A:F1:3F:FB
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (2)
freifunk-naila.net, www.freifunk-naila.net

Certificate Authority Authorization (CAA)

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

We've observed 2 previous certificates for this host. This certificate has been served since Oct 10, 2026.

Never get surprised by freifunk-naila.net's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch freifunk-naila.net 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.