SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
cbt-tokyo.net
SSL/TLS Certificate
SSL/TLS Certificate for cbt-tokyo.net
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- cbt-tokyo.net
- Valid from
- Jan 12, 2026
- Valid until
- Jan 12, 2027 (102 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 9E6C60CD9C0168D5A1535EF8F83DA2A5
- SHA-256 fingerprint
- 48:C4:AA:C7:84:3B:21:8D:78:F2:EF:45:6D:17:76:F7:9E:FE:F8:33:25:D5:EF:D7:D6:EE:4D:BB:3D:D3:60:F4
- 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.
This certificate has been served since Sep 29, 2026.
Never get surprised by cbt-tokyo.net's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch cbt-tokyo.net 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.