It's not obvious what data you can't find. You can always use the search field, it includes both names and IDs of polygons.
Here is a link showing Belgium admin level 2, 4 and 7, using the latest data-set: https://osm-boundaries.com/l/c4e15f6a753e6db7bac34c8b47f745b70626bb33
You can also right click a country and click Tools -> Get admin level coverage and you will get a report in the console (bottom of the map) of the coverage per admin level.
If the data exists in OSM and the polygons are in a working state, they are included in OSM-Boundaries. If you don't find data, you need to be more explicit about what you are looking for.
Note that the tree is always automatically generated. Basically the site builds a hierarchy of polygons fitting inside other polygons. OSM-Boundaries is just a presentation layer for the data in OSM itself. The root isn't guaranteed to be a list of countries, this all depends on the data in OSM. Depending on what you look for it can be useful to change Boundary from All to Administrative in the settings wheel above the tree view.
well I just tried again and it worked. I have no idea what I was doing wrong yesterday, but now the file includes all the data for Belgium. Thanks.
It's not obvious what data you can't find. You can always use the search field, it includes both names and IDs of polygons.
Here is a link showing Belgium admin level 2, 4 and 7, using the latest data-set: https://osm-boundaries.com/l/c4e15f6a753e6db7bac34c8b47f745b70626bb33
You can also right click a country and click Tools -> Get admin level coverage and you will get a report in the console (bottom of the map) of the coverage per admin level.
If the data exists in OSM and the polygons are in a working state, they are included in OSM-Boundaries. If you don't find data, you need to be more explicit about what you are looking for.
Note that the tree is always automatically generated. Basically the site builds a hierarchy of polygons fitting inside other polygons. OSM-Boundaries is just a presentation layer for the data in OSM itself. The root isn't guaranteed to be a list of countries, this all depends on the data in OSM. Depending on what you look for it can be useful to change Boundary from All to Administrative in the settings wheel above the tree view.