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An IP subnet calculator determines network address, broadcast address, usable host range, and total hosts from an IP address and CIDR notation (e.g. 192.168.1.0/24).

公式

CIDR /n = first n bits are network, rest are host bits
n
first n bits are network — first n bits are network

ステップバイステップガイド

  1. 1CIDR /n = first n bits are network, rest are host bits
  2. 2/24 = 256 total addresses (254 usable)
  3. 3Subnet mask: /24 = 255.255.255.0
  4. 4Usable hosts = 2^(32−n) − 2

解いた例

入力
192.168.1.100/24
結果
Network: 192.168.1.0; Broadcast: 192.168.1.255; Usable: .1–.254 (254 hosts)

よくある質問

What is Ip Subnet?

An IP subnet calculator determines network address, broadcast address, usable host range, and total hosts from an IP address and CIDR notation (e. g

How accurate is the Ip Subnet calculator?

The calculator uses the standard published formula for ip subnet. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

What units does the Ip Subnet calculator use?

This calculator works with inches. You can enter values in the units shown — the calculator handles all conversions internally.

What formula does the Ip Subnet calculator use?

The core formula is: CIDR /n = first n bits are network, rest are host bits. Each step in the calculation is shown so you can verify the result manually.

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