Abstract: In some examples, network switch includes a processing resource and a memory resource. The memory resource can include machine readable instructions to create a pointer to a memory address of a storage medium of a programmable ASIC, the memory address including a range of values for a flow rule field; receive a data packet to be matched against the flow rule; determine whether a value of the flow rule field for the received data packet falls within the range of values; and apply an action to the received data packet when it is determined that the flow rule field falls within the range of values.