Location Problem

Hi all,
I'm wondering what I'm doing wrong, hope someone will help me.

In a Wordpress configuration, I tried to allow access to admin page from the inside, denying it from outside my lan. It works fine.
In the same way, I'm trying to apply the same logic to WP-JSON, but it doesn't works as expected : I get 403 from outside, but 404 from the inside (while I'm expecting it to works fin from the inside).

Not clear if this is related to the fact that wp-json is a "virtual" path.

Thanks in advance for Your time.
FabioG

location /wp-admin
{
allow x.x.x.0/24;
allow y.y.y.0/24;
deny all;
}

location ~ wp-json
{
allow x.x.x.0/24;
allow y.y.y.0/24;
deny all;
}