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N-DEx delivers. Information. Connections. Analysis.

N-DEX SealThe National Data Exchange (N-DEx) provides criminal justice agencies with a mechanism for sharing, searching, linking, and analyzing information across jurisdictional boundaries. A national repository of criminal justice records submitted by agencies from around the nation, N-DEx uses those records to “connect the dots” between data on people, places, and things that may seem unrelated in order to link investigations and investigators. N-DEx supplies free, secure, and immediate access to relevant information, enhances the criminal justice community’s ability to share that information in a timely manner, and provides analysis and collaboration tools to assist investigators working cases cooperatively with other agencies.

N-DEx contains records from the entire criminal justice lifecycle:

  • Incidents
  • Arrests
  • Missing persons
  • Service calls
  • Bookings
  • Holdings
  • Incarcerations
  • Pre-trial
  • Pre-sentence
  • Warrants
  • Supervised releases
  • Citations/tickets
  • Field/contact interviews

Access to N-DEx is granted to criminal justice professionals. For more information about N-DEx, contact us at 304-625-0555 or ndex@leo.gov.


N-DEx Links

- N-DEx Home

Participation Resource Center for Criminal Justice Agencies
- Brochure (pdf)
- Benefits
- User Access
- Data Connectivity & Submission Guide (pdf)
- Data Integration Guide (pdf)

- Data Sharing Worksheet (pdf)
- Audit Information
- Policy & Operating Manual (pdf)

- Privacy Impact Assessment
- System of Records Notice (pdf)

How N-DEx Can Help Your Agency
play-button-ndex-video N-DEx brings together data from law enforcement agencies nationwide, connecting the dots in seemingly unrelated investigations. Play Video