Since the implementation of T163562 it is possible to fetch the contributions from an IP range. However, the list seems to be incomplete.
Currently it shows only four edits by two distinct IP addresses (=18.104.22.168 and 22.214.171.124) but this is incomplete; edits by 126.96.36.199 are not displayed, for instance. In fact if you enable the Contributions Range gadget on that wiki, you will find 7 distinct IP addresses in that range that have made contributions in the past. Screenshot below.