This is called "naked" dsl. Qwest offers it in some areas, as does Verizon. Bellsouth does not. US federal court gutted several southern states PUC's rulings that would have forced Bellsouth to wholesale unbundled dsl to CLEC's in their footprint.
Also, if you live in Bellsouth territory, if you have phone service from a competitor, Bellsouth won't sell you DSL. nice.
I've read that Verizon offers naked dsl in NYC. Can't verify that it's available anywhere else.
Used to work for Verizon.