SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
walter-lochmann.com
SSL/TLS Certificate
SSL/TLS Certificate for walter-lochmann.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- walter-lochmann.com
- Valid from
- Sep 11, 2026
- Valid until
- Dec 10, 2026 (83 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 05445ADDD8E844A6D6743B65C8DC46EF17D4
- SHA-256 fingerprint
- 8A:A1:50:6D:CA:BC:8B:87:20:01:29:F6:C3:76:A9:10:65:B2:34:86:C7:1F:BC:68:A6:41:F1:94:8B:C7:BB:5E
- 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.
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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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