U.S. Department of Transportation · Domain Security

Us Dot Domain Security

Domain security

Domain security posture for U.S. Department of Transportation, probed live across 3 host(s) and 2 registrable domain(s). 3 host(s) serve HTTPS (up to TLSv1.3); 2 advertise HSTS. Email/DNS controls: DNSSEC present, SPF present, DMARC present (p=reject).

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Transport & Host Security

www.transportation.gov
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Jan 31 23:59:59 2027 GMT
data.transportation.gov
HTTPS: yes · TLS: TLSv1.2 · HSTS: yes · cert expires: Dec 3 23:28:12 2026 GMT
data.bts.gov
HTTPS: yes · TLS: TLSv1.2 · HSTS: yes · cert expires: Oct 15 18:23:49 2026 GMT

Domain (DNS/Email) Security

transportation.gov
DNSSEC: yes · SPF: yes · DMARC: yes (p=reject) · CAA: none
bts.gov
DNSSEC: yes · SPF: yes · DMARC: yes (p=reject) · CAA: none

Source

Domain Security

Raw ↑ 
generated: '2026-07-28'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: www.transportation.gov
  https: true
  tls_version: TLSv1.3
  cert_expires: Jan 31 23:59:59 2027 GMT
  hsts: null
- host: data.transportation.gov
  https: true
  tls_version: TLSv1.2
  cert_expires: Dec  3 23:28:12 2026 GMT
  hsts: true
  hsts_max_age: 31536000
- host: data.bts.gov
  https: true
  tls_version: TLSv1.2
  cert_expires: Oct 15 18:23:49 2026 GMT
  hsts: true
  hsts_max_age: 31536000
domains:
- domain: transportation.gov
  dnssec: true
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject
- domain: bts.gov
  dnssec: true
  caa: []
  spf: true
  dmarc: true
  dmarc_policy: reject