SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
aj-software.de
SSL/TLS Certificate
SSL/TLS Certificate for aj-software.de
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- ajteccon.de
- Valid from
- Sep 29, 2026
- Valid until
- Dec 28, 2026 (72 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0531B1352041A76A974F6E1EA10A7B4CD40D
- SHA-256 fingerprint
- EE:80:DF:BF:14:61:02:C9:4B:64:76:64:A9:3A:15:CA:97:2D:64:53:D0:8B:5B:51:BD:3B:B2:D7:03:40:50:FB
- 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 aj-software.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch aj-software.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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