10.0.0.0/24 - Public Subnet for Web Servers (10.0.0.0 - 10.0.0.255 256 IPs)  
10.0.1.0/25 - Private Subnet for API Servers (10.0.1.0 - 10.0.1.127 128 IPs)  
10.0.1.128/26 - Database Subnet for DBs (10.0.1.128 - 10.0.1.191 64 IPs)  
10.0.1.192/26 - Spare Subnet (10.0.1.192 - 10.0.1.255 64 IPs)