no it's not a dirt dobber nest and it's white.... well was white...

it was spider webbing.... which is why i'm confused i've never seen anything like this... it wasn't silk worm, or anything like that... it was like a less dense cotton ball cut in half glued to our ceiling (yeah i said pefect cylindrical i forgot to say it was only half lol)

btw you should leave dirt dobber nests unless you like a spider infesed house...

they're not aggresive (tho they may attack if you fuck with them, they're not like red wasps) and they usually prey solely on spiders... atleast the kind we have here.... they're not ball nests tho... they kinda look like organ pipes.... usually 5-6 all connected together..

then there are the ones that look like someone through a mud clump at your house (they're often round, but far from perfection) not sure if tehy're the same species tho