SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ptg-gmbh.de
SSL/TLS Certificate
SSL/TLS Certificate for ptg-gmbh.de
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- *.ptg-gmbh.de
- Valid from
- Sep 7, 2026
- Valid until
- Mar 20, 2027 (168 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0F1BA066CACCB3092F04879DD520B172
- SHA-256 fingerprint
- 6D:05:F0:B7:E0:AC:8F:EB:94:C4:71:F2:AA:05:88:BE:7F:8F:D3:76:9E:F0:31:62:53:2E:D0:E5:9F:D9:F6:DA
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
We've observed 1 previous certificate for this host. This certificate has been served since Sep 24, 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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