We have released an update to the search forms for address that now includes an option to perform range (from a low address to a high address) searches.
By default, the “Address-Number” field is set to “Single” which is what you would use to search for a single address by it’s house number:
Changing the drop-down to the right of the Address-Number field to “Multiple” allows you run a search on a range of addresses from a minimum to a maximum: