Who has found more than 40 pieces of debris created by Indias anti satellite test?

A survey by the National Aeronautics and Space Administration's (NASA) Orbital Debris Program Office reported that more than 40 pieces of debris created by India's anti-satellite test. The debris created by the test conducted by ISRO on 27 March is still moving around in space even as the majority of the debris has disintegrated. The survey also said that 101 big pieces have been tracked and 49 continue to be in the orbit as of July 15.