SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
aj-performance.de
SSL/TLS Certificate
SSL/TLS Certificate for aj-performance.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- aj-performance.de
- Valid from
- Jun 26, 2026
- Valid until
- Sep 24, 2026 (60 days remaining)
- Public key
- EC 256-bit
- Serial
- 054BF7A2F312400FC0DAF0702BE32DD1C2C3
- SHA-256 fingerprint
- 35:8D:4E:D7:2A:9A:9A:91:69:71:F8:C8:6F:C6:76:CD:28:11:E4:05:76:19:01:57:86:D2:AE:C4:F2:8E:9D:A9
- Chain
- YE1 → Root YE → ISRG Root X2 → 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 aj-performance.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch aj-performance.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.
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