dev-to · Domain Security

Dev To Domain Security

Domain security

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

Transport & Host Security

developers.forem.com
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Aug 28 22:03:49 2026 GMT
dev.to
HTTPS: yes · TLS: TLSv1.2 · HSTS: yes · cert expires: Dec 12 22:06:30 2026 GMT

Domain (DNS/Email) Security

forem.com
DNSSEC: yes · SPF: yes · DMARC: yes (p=none) · CAA: none
dev.to
DNSSEC: no · SPF: yes · DMARC: yes (p=reject) · CAA: none

Source

Domain Security

Raw ↑ 
generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: developers.forem.com
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 28 22:03:49 2026 GMT
  hsts: true
  hsts_max_age: 31536000
- host: dev.to
  https: true
  tls_version: TLSv1.2
  cert_expires: Dec 12 22:06:30 2026 GMT
  hsts: true
  hsts_max_age: 31557600
domains:
- domain: forem.com
  dnssec: true
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: none
- domain: dev.to
  dnssec: false
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject