generated: '2026-09-01' method: probed source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts hosts: - host: www.tzero.com https: true tls_version: TLSv1.3 cert_expires: Nov 2 07:28:10 2026 GMT hsts: true hsts_max_age: 63072000 - host: apidocs.tzero.com https: true tls_version: TLSv1.3 cert_expires: Nov 9 04:36:49 2026 GMT hsts: false - host: gateway-web-api.tzero.com https: true tls_version: TLSv1.3 cert_expires: Oct 5 23:43:17 2026 GMT hsts: null - host: api.t0direct.com https: true tls_version: TLSv1.3 cert_expires: Nov 20 20:50:59 2026 GMT hsts: true hsts_max_age: 31536000 hsts_include_subdomains: true method: probed-by-hand - host: platform.tzero.com https: true tls_version: TLSv1.3 cert_expires: Oct 30 00:25:27 2026 GMT method: probed-by-hand domains: - domain: tzero.com dnssec: true caa: [] spf: true dmarc: true dmarc_policy: reject - domain: t0direct.com dnssec: false caa: [] spf: false dmarc: false dmarc_policy: null method: probed-by-hand note: The mechanical probe reads apis.yml Website/Portal/humanURL/baseURL and OpenAPI servers[]. api.t0direct.com and platform.tzero.com were probed by hand on the same day with the same method and appended below; t0direct.com is a second registrable domain tZERO operates for its institutional surface and it carries no DNSSEC, CAA, SPF or DMARC record.