Board Thread:Script Suggestions/@comment-30398816-20161016080244/@comment-27345308-20161016081442

It is possible but that means you'd have to query all APIs on all wikis to see if they contributed there. Which means you'd have to send about 9 million requests to APIs to find out where is one vandal located, and that's not nearly effective. That's why VSTF has access to LookupContribs to locate cross-wiki vandals.