Subnet Mask & VLSM Calculator

Tag: Subnet Mask & VLSM Calculator

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IPv4 Subnetting Practice Quiz - Online CIDR & Netmask Drills

Practice calculating network ID, broadcast address, and usable IPs from a random IP/CIDR combination. Instant feedback and score tracking. Perfect for CCNA prep.

Developer Tools CIDR IP practice quiz subnet

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IPv4 Subnet Builder - Online Visual Range Calculator

Enter an IP and CIDR prefix to visually see network address, broadcast, usable range, and subnet mask conversions.

Calculator calculator IPv4 subnet VLSM