netmask - Subnet mask - IP calculator

子網路- 維基百科，自由的百科全書

子網路（英語：Subnetwork）這個詞有兩個相關的含義：其中一個較老的、一般的含義是網際網路中的一個物理網路；在網際網路協定（Internet Protocol，IP）中，子網路指的是從分類 

Netmask

Netmasks often refer to classes of IP addresses. They're used to define a range of IP addresses that an ISP or other organization can use.

What is a Netmask?

A Netmask is a 32-bit "mask" used to divide an IP address into subnets and specify the network's available hosts. In a netmask, two bits are always 

Day 9 情報收集- Information Gathering (netmask)

今天要介紹 netmask ，是可以讓我們自由轉換各種不同表示類型的網路地址以及子網遮罩，在劃分子網路的時候也相當實用，另外也提供了十進位IP位址的16/8/2進位轉換，在寫網 

netmask

The Netmask class parses and understands IPv4 CIDR blocks so they can be explored and compared. This module is highly inspired by Perl Net:: 

Subnet

For IPv4, a network may also be characterized by its subnet mask or netmask, which is the bitmask that, when applied by a bitwise AND operation to any IP