SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
serve-u.de
SSL/TLS Certificate
SSL/TLS Certificate for serve-u.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- serve-u.de
- Valid from
- Oct 18, 2026
- Valid until
- Jan 16, 2027 (64 days remaining)
- Public key
- EC 384-bit
- Serial
- 069E1B66D799F241122BF1CDE087815F379F
- SHA-256 fingerprint
- A0:0C:D1:ED:D4:67:47:F2:00:60:6B:00:B0:E2:06:53:C4:71:39:C1:9B:8F:4D:A4:A7:DD:E8:CF:46:66:8D:A4
- Chain
- YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).
We've observed 1 previous certificate for this host. This certificate has been served since Nov 9, 2026.
Never get surprised by serve-u.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch serve-u.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, 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.
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