Python Standard Library and Popular · Domain Security

Python Domain Security

Domain security

Domain security posture for Python Standard Library and Popular, probed live across 3 host(s) and 2 registrable domain(s). 3 host(s) serve HTTPS (up to TLSv1.3); 3 advertise HSTS. Email/DNS controls: DNSSEC absent, SPF present, DMARC present (p=none).

FrameworksLibrariesProgramming LanguagePython

Transport & Host Security

www.python.org
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Feb 14 13:03:45 2027 GMT
docs.python.org
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Feb 14 13:03:45 2027 GMT
requests.readthedocs.io
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Aug 27 13:13:23 2026 GMT

Domain (DNS/Email) Security

python.org
DNSSEC: no · SPF: yes · DMARC: yes (p=none) · CAA: none
readthedocs.io
DNSSEC: no · SPF: no · DMARC: no · CAA: yes

Source

Domain Security

python-domain-security.yml Raw ↑ 
generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: www.python.org
  https: true
  tls_version: TLSv1.3
  cert_expires: Feb 14 13:03:45 2027 GMT
  hsts: true
  hsts_max_age: 63072000
- host: docs.python.org
  https: true
  tls_version: TLSv1.3
  cert_expires: Feb 14 13:03:45 2027 GMT
  hsts: true
  hsts_max_age: 315360000
- host: requests.readthedocs.io
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 27 13:13:23 2026 GMT
  hsts: true
  hsts_max_age: 31536000
domains:
- domain: python.org
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: none
- domain: readthedocs.io
  dnssec: false
  caa:
  - 0 issuewild "comodoca.com"
  - 0 issuewild "digicert.com; cansignhttpexchanges=yes"
  - 0 issuewild "letsencrypt.org"
  - 0 issuewild "pki.goog; cansignhttpexchanges=yes"
  - 0 issuewild "ssl.com"
  - 0 issue " amazontrust.com"
  spf: false
  dmarc: false