Solutions for estimating a cellular site location, for example in a roaming network, includes receiving data metrics from a plurality of user devices corresponding to communications using a roaming carrier network, wherein the data metrics are stored on the plurality of user devices during the communication using the roaming carrier network, and the data metrics are received using a home carrier network. The received data metrics is filtered to identify the roaming carrier network and the filtered data metrics group corresponding to a cell within the roaming carrier network. A source of a signal corresponding to the cell is determine and the location of the cellular site corresponding the source of the signal estimated.