Do you ask this question because you need to see Satan personified or see one possessed and delivered by the finger of God? What proof was there when Jesus rebuked Peter for being rebuked by Peter when He spoke to the disciples concerning going to the cross to be betrayed of men? Was it not discernment the Lord had and the other disciples did not? Perhaps your belief that Satan is bound is an advantage and opportunity for the devil to take advantage of believers and establish strongholds with his doctrine and keep believers in confusion about discerning the tactics and strategies of the devil who tries to prevail against the church.
To give heed to seducing spirits and doctrines of devils, it is not part of what happens to those who depart from the faith If Satan is bound, chained and with a lid over top, would that permit him to coordinate with the powers of darkness as the prince and power of the air? Would being bound keep him from being the active God of this world system? If He was bound with the ascension of Christ how was he able to hinder Paul from being able to go and be with certain believers and why did Paul instruct believers in the church to not give place to the devil and to not be ignorant of his devices? Was Peter referring to Satan in the future tense as one who roams seeking whom he can devour? Surely if Satan is bound from being able to deceive the nations, these nations refer to the people of these nations as well as the governing bodies of these nations.