National Institutes of Health (NIH) · Domain Security

Nih Domain Security

Domain security

Domain security posture for National Institutes of Health (NIH), probed live across 3 host(s) and 1 registrable domain(s). 3 host(s) serve HTTPS (up to TLSv1.3); 3 advertise HSTS. Email/DNS controls: DNSSEC present, SPF present, DMARC present (p=reject).

BiomedicalResearchPubMedClinical TrialsPubChemGenomicsHealthScienceGovernment

Transport & Host Security

www.nih.gov
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 20 12:45:50 2026 GMT
www.ncbi.nlm.nih.gov
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 26 14:06:42 2026 GMT
eutils.ncbi.nlm.nih.gov
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Sep 26 14:06:42 2026 GMT

Domain (DNS/Email) Security

nih.gov
DNSSEC: yes · SPF: yes · DMARC: yes (p=reject) · CAA: yes

Source

Domain Security

Raw ↑ 
generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: www.nih.gov
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 20 12:45:50 2026 GMT
  hsts: true
  hsts_max_age: 31536000
- host: www.ncbi.nlm.nih.gov
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 26 14:06:42 2026 GMT
  hsts: true
  hsts_max_age: 31536000
- host: eutils.ncbi.nlm.nih.gov
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep 26 14:06:42 2026 GMT
  hsts: true
  hsts_max_age: 31536000
domains:
- domain: nih.gov
  dnssec: true
  caa:
  - 0 issue "sectigo.com"
  - 0 issue "entrust.net"
  - 0 issue "godaddy.com"
  - 0 issue "identrust.com"
  - 0 issuewild "godaddy.com"
  - 0 issuewild "sectigo.com"
  spf: true
  dmarc: true
  dmarc_policy: reject

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