Data Catalog

• Federal

  911 Master PSAP Registry

  Federal Communications Commission —

  Updated as of February 26, 2019. The FCC’s 911 Master PSAP Registry (PSAP Registry) lists Public Safety Answering Points (PSAPs) by an FCC assigned identification...

  • CSV
  • RDF
  • JSON
  • XML
• Federal

  Rail Mileposts

  Department of Transportation —

  The Rail Mileposts dataset was updated on June 15, 2025 and was created on July 15, 2025 by the Federal Railroad Administration (FRA), and is part of the U.S....

  • HTML
  • HTML
• Federal

  Collection National 9-1-1 Profile Database

  Department of Transportation —

  Collect and aggregate information from state level reporting entities that can be used to measure the progress of 9 1-1 authorities across the country in enhancing...

  • HTML
• Federal

  AOS: 3 wavelength Particle Soot Absorption Photometer 1 second averages

  Department of Energy —

  No description found

  • nc
• Federal

  AOS: 3 wavelength Particle Soot Absorption Photometer 1 minute averages

  Department of Energy —

  No description found

  • nc
• Federal

  AOS: 3 wavelength Particle Soot Absorption Photometer

  Department of Energy —

  No description found

  • Undefinedtxttsvpdfasc

You can also access this registry using the API (see API Docs).

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