SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for doc-a.de
Valid- Issued by (CA)
- Google Trust Services
- Subject
- doc-a.de
- Valid from
- Jun 25, 2026
- Valid until
- Sep 23, 2026 (63 days remaining)
- Public key
- EC 256-bit
- Serial
- C94B201A38D8E04D0E6876570A0586B2
- SHA-256 fingerprint
- 07:B8:28:74:47:70:E9:86:79:FD:43:9F:86:7F:4C:28:BE:F7:7F:89:62:A1:A2:A2:AD:98:AB:00:6C:8C:0A:DF
- Chain
- WE1 → GTS Root R4
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by doc-a.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch doc-a.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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