Abuse Contact IDentifier (ACID)

The Registrar Stakeholder Group (RrSG) offers this tool free of charge to anyone trying to identify the appropriate party (e.g. hosting provider) to report abuse to. 

This tool, which relies on public data provided by third parties, is provided for informational purposes only; the RrSG makes no warranty regarding the accuracy of such data. The data retrieved and displayed does not imply any obligation, duty, or liability on the part of the Registrar Stakeholder Group, including with regard to any use that may be made of such data.

Registrar Stakeholder Group 
ACID tool v 2.0