Tor exits are tracked
longer term here [1] and in a few other block-list repos. The data is built from Tor's exit node list [2] An IP can also be queried in ExoneraTor [3] to see if it was ever a Tor exit node. Could all of this could be added to the tool?
[1] - https://github.com/firehol/blocklist-ipsets
[2] - https://check.torproject.org/exit-addresses
[3] - https://support.torproject.org/glossary/exonerator/