Nex.li is used by Netdex users to link to their Netdex profile.
This used to be a link shortener, however, that's been replaced by hax.to. All nex.li links have been imported there, so you can simply replace 'nex.li' with 'hax.to' and be done with it. Do not use nex.li as an alternative domain for hax.to as the redirect will be removed in the future.