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IP addresses are assigned in blocks, and these blocks are assigned to registered companies - Long story short you can roughly determine whether an IP address is
by penagwin 6y ago
IP addresses are assigned in blocks, and these blocks are assigned to registered companies - Long story short you can roughly determine whether an IP address is from a datacenter or is "residential" without too much issue - All DigitalOcean droplets are given IP addresses within DO's range for example.
Basically if the IP is from a datacenter - it's likely a VPN.