A Device Abstraction Proxy (DAP) interface receives a request for operational data relating to broadband access line services provided to a plurality of broadband access terminals in a network by two or more providers. The DAP interface receives, in response to the request, the operational data, including operational data for a plurality of DSL lines coupled to the plurality of broadband access terminals. The DAP then identifies at least two of the plurality of broadband access lines as belonging to a common neighborhood of broadband access lines, each of the at least two of the plurality of DSL lines respectively associated with at least two of the plurality of broadband access terminals being provided the broadband access services by different providers. Embodiments correlate a condition and/or a performance of one of the at least two broadband access lines identified as belonging to the common neighborhood with a condition and/or performance of another one of the at least two broadband access lines identified as belonging to the common neighborhood.