However, Xfinity has already got in trouble for inaccurate data. Then what happens is you can challenge the data - for your address only. Then Xfinity will deny your challenge (they've got caught just doing an automatic denial), and then you have to appeal it. And once your appeal is upheld, ONLY your address is updated, not the block, or anything else.
I've done at least 30-50 challenges; largely for my neighborhood and surrounding area. It's a tedious process, but worth holding those accountable that should be held accountable.
FWIW, I've won every single challenge, and it was a fairly simple process.