CDN PoPs (Points of Presence) are strategically located data centers responsible for communicating with users in their geographic vicinity. The main function of PoP is to reduce the time to bring the content to the user.
Is PoP means one server?
A point of presence, commonly referred to as a POP, is a single geographical location where a group of CDN edge servers resides.
For information about 5centsCDN different networks and PoPs, Please refer to the link
https://www.5centscdn.net/cdn-network/