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IPv4 Subnet Calculator

Calculate an IPv4 subnet's network, broadcast, mask, host range, usable host count, and binary representation locally in your browser.

TODO-i18n: this tool's instructions and FAQs are currently available in English.

ツール操作エリア

アカウント不要

Inputs and generated outputs stay in this browser. Files and secrets are not uploaded to SiteIndex.

IPv4 address and CIDR prefix

Subnet Calculatorとは

Calculate an IPv4 subnet's network, broadcast, mask, host range, usable host count, and binary representation locally in your browser.

使い方

Calculate an IPv4 subnet's network, broadcast, mask, host range, usable host count, and binary representation locally in your browser.

よくある用途

Calculate an IPv4 subnet's network, broadcast, mask, host range, usable host count, and binary representation locally in your browser.

利用上の注意

Calculate an IPv4 subnet's network, broadcast, mask, host range, usable host count, and binary representation locally in your browser.

よくある質問

Subnet Calculatorとは: Calculate an IPv4 subnet's network, broadcast, mask, host range, usable host count, and binary representation locally in your browser.