1. A method for data usage accounting across multiple communication networks, comprising: receiving a first enterprise data session request from a first computing device that is configured to operate on a first home communication network, wherein the first computing device is associated with a first enterprise and the first enterprise data session request includes a location of a first requested external entity; in response to the received first enterprise data session request, establishing a connection with the first requested external entity based on the location of the first requested external entity for data exchange between the first computing device and the first requested external entity; determining a data usage amount for the data exchange of the first enterprise data session request; determining that the first computing device is associated with the first enterprise; attributing the data usage amount for the data exchange of the first enterprise data session request to the first enterprise; receiving a second enterprise data session request from a second computing device that is configured to operate on a second home communication network, wherein the second computing device is also associated with the first enterprise and the second enterprise data session request includes a location of a second requested external entity; in response to the received second enterprise data session request, establishing a connection with the second requested external entity based on the location of the second requested external entity for data exchange between the second computing device and the second requested external entity; determining a data usage amount for the data exchange of the second enterprise data session request from the second computing device; determining that the second computing device is associated with the first enterprise; and attributing the data usage amount for the data exchange of the second enterprise data session request from the second computing device to the first enterprise such that enterprise data usage accounting for different computing devices operating on different networks is enabled.