  Virtual black holes in noncommutative spacetime are investigated using
coordinate coherent state formalism such that the event horizon of black hole
is manipulated by smearing it with a Gaussian of width $ \sqrt \theta $, where
$ \theta$ is the noncommutativity parameter. Proton lifetime, the main
associated phenomenology of the noncommutative virtual black holes, has been
studied: first in $4$ dimensional spacetime and then generalized to $D$
dimensions. The lifetime depends on $ \theta$ and the number of spacetime
dimensions such that it emphasizes on the measurement of proton lifetime as a
potential probe for the micro-structure of spacetime.
