Nasa have records of data about debris and satellite orbiting the earth which it share with other agencies out there.
The Department of Defense maintains a highly accurate satellite
catalog on objects in Earth orbit that are larger than a softball.
NASA and the DoD cooperate and share responsibilities for
characterizing the satellite (including orbital debris) environment.
DoD’s Space Surveillance Network tracks discrete objects as small as 2
inches (5 centimeters) in diameter in low Earth orbit and about 1 yard
(1 meter) in geosynchronous orbit. Currently, about 15,000 officially
cataloged objects are still in orbit. The total number of tracked
objects exceeds 21,000. Using special ground-based sensors and
inspections of returned satellite surfaces, NASA statistically
determines the extent of the population for objects less than 4 inches
(10 centimeters) in diameter.
Collision risks are divided into three categories depending upon size
of threat. For objects 4 inches (10 centimeters) and larger,
conjunction assessments and collision avoidance maneuvers are
effective in countering objects which can be tracked by the Space
Surveillance Network. Objects smaller than this usually are too small
to track and too large to shield against. Debris shields can be
effective in withstanding impacts of particles smaller than half an
inch (1 centimeter)
Space Debris and Human Spacecraft
Isro uses the data complied by Nasa with a Radar specifically design to track multiple objects at same time called MOTR right now.