子网计算器
Classful Network
| Class | Leading bits | Host Address Range | Number of Networks | Notation CIDR | Default Netmask |
|---|---|---|---|---|---|
| Class A | 0 | 0.0.0.0 - 127.255.255.255 | 128 | /8 | 255.0.0.0 |
| Class B | 10 | 128.0.0.0 - 191.255.255.255 | 16384 | /16 | 255.255.0.0 |
| Class C | 110 | 192.0.0.0 - 223.255.255.255 | 2097152 | /24 | 255.255.255.0 |
| Class D (multicast) | 1110 | 224.0.0.0 - 239.255.255.255 | not defined | not defined | |
| Class E (reserved) | 1111 | 240.0.0.0 - 255.255.255.255 | not defined | not defined |
Non-routable networks
The folowing addresses are reseved for private networks:
172.16.0.0 to 172.31.255.255 (172.16 / 12 prefix)
192.168.0.0 to 192.168.255.255 (192.168 / 16 prefix)
Special cases
127.0.0.0 to 127.255.255.255 (LoopBack)
169.254.0.0 to 169.254.255.255 (undeclared hosts)
224.0.0.0 to 239.255.255.255 (Multicast)
This ip address calculator takes IPv4 address and subnet mask or CIDR then calculates and converts to binary ip address, the network address, broadcast address (broadcast), inverse netmask (Cisco wildcard mask), CIDR(Mask Bits), network mask, number of hosts, maximum number of sub-networks, ip range calculator : first and last host address. It is also intended to be a very good educational tool to verify the results and understand the binary values.
Reference : wikipedia: classful network
高级在线子网计算器，提供首地址、末地址、广播IP地址、通配符掩码、网络掩码、CIDR表示法及十六进制转换。该工具能够将IP地址转换为二进制格式，并支持多种网络参数的计算与分析。无论是进行网络设计还是故障排除，该计算器都能帮助用户轻松获取所需的信息和数据，提高工作效率。通过简单直观的界面，用户可以快速输入相关参数，即刻获得精确结果，非常适合IT专业人士和网络管理员使用。这款实用工具旨在简化复杂的子网划分过程，使得任何人都能轻松掌握并应用各种IP相关知识，无论是在学习阶段还是实际操作中，都大有裨益。