Subnet Calculator

Calculate network address, broadcast, host ranges, and binary representations for any IPv4 subnet. Includes CCNA/Network+ practice questions.

Calculator

CIDR Address

CCNA / Network+ exam-style questions. Click an answer to reveal the explanation.

Q1.A host has the IP address 172.16.45.14/20. What is the network address?

Q2.How many usable host addresses are available in a /27 subnet?

Q3.Which subnet mask corresponds to /22?

Q4.A company needs at least 500 usable host addresses per subnet. Which is the smallest (most specific) prefix that satisfies this requirement?

Q5.What is the broadcast address for the network 10.0.0.0/8?

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