U.S. Department of Justice
Federal Bureau of Investigation
Criminal Justice Information Services Division

Law Enforcement National Data Exchange

What is N-DEx?

N-DEx provides law enforcement agencies (LEA) with a powerful new investigative tool to search, link, analyze, and share criminal justice information such as, incident/case reports, incarceration data, and parole/probation data on a national basis to a degree never before possible.

How Does it Benefit Law Enforcement?

N-DEx allows for the sharing of criminal justice information currently collected by local, state, tribal, and federal agencies nationwide. The cornerstone of the N-DEx data set is the incident and descriptive information depicting the persons, places, and things associated with an incident. N-DEx brings together incident and case reports, booking and incarceration data, and parole/probation data from law enforcement agencies (LEA) throughout the United States.

N-DEx allows participating LEAs to:

  • Detect relationships between people, places, things, and crime characteristics;
  • Link information across jurisdictions;
  • “Connect the dots” between data that are not apparently related without information overload;
  • Provide contact information and collaboration tools for LEAs that are working on cases of mutual interest;
  • Create virtual regional systems without regard for geographic boundaries.

Who Manages the Data?

The management of LEA data shared in N-DEx remains with the LEA that provides it. N-DEx supplies controls to allow LEAs to decide what data to share, who can access it, and under what circumstances. It allows agencies to participate in accordance with applicable laws and policies governing dissemination and privacy.

Requirements for N-DEx System User Participation

For an N-DEx User Account:

  • Obtain an application—Applications are available on www.leo.gov or by calling the N-DEx fax-on-demand number: 1-877-854-7596.
  • Complete the N-DEx/OneDOJ User Application/Rules of Behavior (ROB);
  • Process applications through CSO/POC for verification;
  • Fax applications to the N-DEx Program Office: 888-550-6427.

Requirements for N-DEx System Data Submission

Any Law Enforcement Agency can participate.

Agencies must adhere to national standards for efficient sharing of data.

  • National Information Exchange Model (NIEM)
  • Law Enforcement Information Sharing Program (LEISP) Exchange Specification (LEXS)

Agencies may be required to:

  • Sign an operational Memorandum of Understanding (MOU);
  • Identify and map incident/case data to the N-DEx Information Exchange Package Documentation (IEPD);
  • Obtain network connectivity through an existing CJIS Wide-Area Network (WAN) or connect over the Law Enforcement Online (LEO).

Contact the N-DEx program office to develop a strategy for participation.

Participation requirements provide criminal justice agencies with data standards and suggestions for participation in the N-DEx Program.

The N-DEx IEPD can be downloaded at www.it.ojp.gov.

N-DEx Vision

To share complete, accurate, timely, and useful criminal justice information across jurisdictional boundaries and to provide new investigative tools that enhance the nation’s ability to fight crime and terrorism.

For more information contact the N-DEx Program Office: (304) 625-4242.

E-mail: ndex@leo.gov

Website: http://www.fbi.gov/hq/cjisd/ndex/ndex_home.htm

N-DEx home