SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ritter-optik.com
SSL/TLS Certificate
SSL/TLS Certificate for ritter-optik.com
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- ritter-optik.com
- Valid from
- Dec 8, 2025
- Valid until
- Jan 8, 2027 (141 days remaining)
- Public key
- EC 256-bit
- Serial
- 9C19BE53C2A1E26EFCDF877DDB6A4C95
- SHA-256 fingerprint
- 1C:D9:0C:C3:D6:EA:65:8B:A2:21:4F:C2:BB:01:23:07:F0:ED:E0:C5:07:AB:88:C6:08:6F:5F:0E:5E:EE:5A:BA
- Chain
- Sectigo Public Server Authentication CA DV E36 → Sectigo Public Server Authentication Root E46 → USERTrust ECC Certification Authority
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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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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