Systems and methods to measure network usage are provided. A particular method includes collecting first usage data from a first network device of a network at a network usage tracking system. The first network device determines the first usage data based on an inband measurement of data passing through the first network device. The method includes collecting second usage data from a second network device of the network at the network usage tracking system. The first network device and the second network device are different network devices. The method includes matching the first usage data and the second usage data to user accounts. The network usage data is determined based on the first usage data, the second usage data, and the user accounts.