There's something a little weird about the "two addresses".
1.4 are the same, which means that
1.4.4 are the same and
1.4.1 are the same.
What's "weird" is that
1.4.4 is entirely enclosed in
0.1.1 is entirely enclosed in
Which means you can't rely on prefix alone for containment.
I wonder if that makes this whole idea a non-starter.