generated: '2026-07-11' method: probed source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts hosts: - host: api.slack.com https: true tls_version: TLSv1.3 cert_expires: Sep 3 09:48:09 2026 GMT hsts: false - host: docs.slack.dev https: true tls_version: TLSv1.3 cert_expires: Sep 8 23:21:02 2026 GMT hsts: false - host: slack.com https: true tls_version: TLSv1.3 cert_expires: Sep 3 09:48:09 2026 GMT hsts: true hsts_max_age: 31536000 domains: - domain: slack.com dnssec: true caa: - 0 iodef "mailto:hostmaster@slack-corp.com" - 0 issue "digicert.com; account=455b15ed272bed097725c6ea50e89921fc57379c5338a29305c05771df65fff1" - 0 issue "letsencrypt.org; accounturi=https://acme-v02.api.letsencrypt.org/acme/acct/1532134906" spf: true dmarc: true dmarc_policy: reject - domain: slack.dev dnssec: false caa: [] spf: false dmarc: false