SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
step-gmbh.com
SSL/TLS Certificate
SSL/TLS Certificate for step-gmbh.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- step-gmbh.com
- Valid from
- Jun 29, 2026
- Valid until
- Sep 27, 2026 (47 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 05A6238A5E6AED235B2B0D6857F57085B50E
- SHA-256 fingerprint
- E5:AB:4C:8A:41:E0:42:3C:8E:A1:39:B9:86:BC:53:BF:CF:38:91:64:D3:B3:C2:62:96:B4:72:5D:C0:A0:23:07
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Aug 7, 2026.
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Uptime
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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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