Klingon Imperial information net

From Memory Alpha, the free Star Trek reference

The Klingon Imperial information net is the main database of information for the Klingon Empire, including biographical records and the public records of the High Council.

Shortly before her death in 2367 Ambassador K'Ehleyr accessed the information net seeking information on Duras and his family's involvement in the Khitomer Massacre. (TNG: "Reunion")