SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
long-wu-guan.de
SSL/TLS Certificate
SSL/TLS Certificate for long-wu-guan.de
Valid- Issued by (CA)
- ZeroSSL GmbH
- Subject
- long-wu-guan.de
- Valid from
- Aug 23, 2026
- Valid until
- Nov 21, 2026 (51 days remaining)
- Public key
- EC 256-bit
- Serial
- 5334466EF51248F6C0D7F2B0195F2C54
- SHA-256 fingerprint
- 26:15:D6:91:CA:47:77:C8:7F:DC:02:BB:5C:0E:0A:54:78:C4:1F:66:0F:D6:50:25:53:1C:D0:98:18:4E:6B:47
- Chain
- ZeroSSL ECC DV SSL CA 2 → 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.
Never get surprised by long-wu-guan.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch long-wu-guan.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.