seenalts: 
  type: world  
  events:  
    on player joins:
      - flag server <player.ip.address.replace[<&dot>].with[_].before[<&co>]>:->:<player>
      - if <server.flag[<player.ip.address.replace[<&dot>].with[_].before[<&co>]>].as_list.parse[is_banned].contains[true]> {
        - narrate "<&c><player.name> is sharing an IP address with a banned user!" targets:<server.list_online_players.filter[has_permission[my.permission.node]]>
        }      
    on seenalts command:
      - determine fulfilled passively
      - if <player.has_permission[my.permission.node].not> {
        - narrate "<&c>You do not have the permission to do this."
        - queue clear
        }
      - define player <server.match_offline_player[<context.args.get[1]>]||none>
      - if <def[player].is_player.not||true> {
        - narrate "<&c>This player has not been on this server before!"
        - queue clear
        }
      - narrate "<&c>Accounts from the same IP address<&co> <server.flag[<def[player].ip.replace[<&dot>].with[_].before[<&co>]>].as_list.parse[name].formatted||Nobody>"