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 aim-berlin.de

Valid
Issued by (CA)
Let's Encrypt
Subject
aim-berlin.de
Valid from
Jun 25, 2026
Valid until
Sep 23, 2026 (59 days remaining)
Public key
RSA 2048-bit
Serial
058AFE35BB82771C8D773252DB2D37DB7597
SHA-256 fingerprint
DB:08:4D:82:EB:A8:37:B2:47:47:E1:54:FF:CC:0C:B6:ED:61:31:CE:E4:45:B4:65:CF:9D:97:AD:AA:99:B2:F4
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (3)
aim-berlin.de, webmail.aim-berlin.de, www.aim-berlin.de

Certificate Authority Authorization (CAA)

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

Never get surprised by aim-berlin.de's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch aim-berlin.de 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.