SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
d-dock.tokyo
SSL/TLS Certificate
SSL/TLS Certificate for d-dock.tokyo
Hostname mismatch- Issued by (CA)
- Microsoft Corporation
- Subject
- *.azurewebsites.net
- Valid from
- Oct 11, 2026
- Valid until
- Jan 19, 2027 (88 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 43013F47E81F358F33335533DD0000013F47E8
- SHA-256 fingerprint
- C6:ED:EA:5D:38:79:C6:0A:49:1F:29:B4:AA:A7:EA:5C:48:86:BE:7F:A5:34:C5:1B:18:DA:B0:52:3F:92:9C:F0
- Chain
- Microsoft TLS G2 RSA CA OCSP 04 → Microsoft TLS RSA Root G2 → DigiCert Global Root G2
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by d-dock.tokyo's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch d-dock.tokyo 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, CNAME, TXT 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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