A first device can receive an attach request that includes information associated with a user device. The user device can provide the attach request to request access to a network. The first device can provide, to a second device and using the information associated with the user device, a request for information associated with a group identifier that is associated with the user device. The first device can receive, from the second device, the information associated with the group identifier that is associated with the user device based on providing the request for information associated with the group identifier. The first device can determine a network slice identifier that is associated with the user device based on the information associated with the group identifier that is associated with the user device. The first device can permit the user device to access a network slice, of the network, that is associated with the network slice identifier based on determining the network slice identifier.