Ip last 3 digits confusion

[iAmDjMAD]

i have started to receive lot of traffic from Egypt & i notice most of ips are like 45.654.654.123 - 45.654.654.456 only last 3 digits are changed i wanna know what that represents 2 different user or same user or 2 user connecting with same ISP?

 

[mikho]

Could be all of the above if its a dynamic iP or if someone is proxying from that range.