SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
1a-mediengruppe.de
SSL/TLS Certificate
SSL/TLS Certificate for 1a-mediengruppe.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- 1a-mediengruppe.de
- Valid from
- Jun 13, 2026
- Valid until
- Sep 11, 2026 (51 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 0532FC62E0781CA9CD5492F8BDD5DB9132B9
- SHA-256 fingerprint
- F0:49:64:AD:92:60:AC:BC:61:8A:CA:17:98:92:77:D7:98:D1:08:7B:14:D2:FA:50:99:EA:23:7A:9D:10:F9:B5
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by 1a-mediengruppe.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch 1a-mediengruppe.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.