It is conceivable that they all are @Teresana - there is a road called High Street in Melbourne that crosses around 20 suburbs and restarts the numbering every suburb.
Hello @Teresana, multiple places on the map can have the same address, for example in a shopping mall.
To know what the actual situation is over there, you would need to go there and have a look yourself, if that is possible. Probably at least some of the ones you pointed to have an incorrect pin location, so this post might also be helpful:
2022
