Sleeper · Domain Security

Sleeper Domain Security

Domain security

Domain security posture for Sleeper, probed live across 2 host(s) and 2 registrable domain(s). 2 host(s) serve HTTPS (up to TLSv1.3); 1 advertise HSTS. Email/DNS controls: DNSSEC absent, SPF present, DMARC present (p=quarantine).

CompanyFantasy SportsSportsFantasy FootballGamingSports DataLeaguesConsumer

Transport & Host Security

docs.sleeper.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Sep 20 14:05:19 2026 GMT
api.sleeper.app
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 21 21:44:25 2026 GMT

Domain (DNS/Email) Security

sleeper.com
DNSSEC: no · SPF: yes · DMARC: yes (p=quarantine) · CAA: none
sleeper.app
DNSSEC: no · SPF: yes · DMARC: no · CAA: none

Source

Domain Security

Raw ↑ 
generated: '2026-07-21'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: docs.sleeper.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 20 14:05:19 2026 GMT
  hsts: false
- host: api.sleeper.app
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 21 21:44:25 2026 GMT
  hsts: true
  hsts_max_age: 15724800
domains:
- domain: sleeper.com
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: quarantine
- domain: sleeper.app
  dnssec: false
  caa: []
  spf: true
  dmarc: false