Text on the page: ComiR (Combinatorial miRNA targeting) predicts whether a given mRNA is targeted by a set of miRNAs. ComiR uses miRNA expression to improve and combine multiple miRNA targets for each of the four prediction algorithms: miRanda, PITA, TargetScan and mirSVR. The composite scores of the four algorithms are then combined using a support vector machine trained on Drosophila Ago1 IP data.

Last updated 10/2015 but there are links to several different things like TargetScan which brings up options to enter data:

. Select a species
Human

AND 2. Enter a human gene symbol (e.g. "Hmga2")

or an Ensembl gene (ENSG00000149948) or transcript (ENST00000403681) ID