Network and IP Address Calculator

Displays the network, broadcast, first and last addresses for a given network

The network mask "bit format" is also called CIDR format (CIDR = Classless Inter-Domain Routing)。

Subnet Mask Converter (Dot-Decimal Format)

Network/Node Calculator

Decimal subnet mask inverse calculator

Decimal Subnet Mask Converter

Calculate bit complement of an IP address (inverse)

Network and IP Address Calculator

Network Listnetwork 0.0.0.0 ,Mask 0.0.0.0"×

network Host Broadcast Address
Starting Finish
0.0.0.0 0.0.0.0 0.0.0.0 0.0.0.0
0.0.0.0 0.0.0.0 0.0.0.0 0.0.0.0
0.0.0.0 0.0.0.0 0.0.0.0 0.0.0.0
0.0.0.0 0.0.0.0 0.0.0.0 0.0.0.0

Calculate the mask address translator by the number of hosts

TCP/IP Base Converter

The mask is converted to the number of addresses available on the network.

IP multicast address range

All multicast addresses can be easily recognized because they start with the bit pattern "1110".。

224.0.0.0 - 224.0.0.255Well-known multicast addresses, control channels

224.0.1.0 - 238.255.255.255 Global (Internet-wide) multicast addresses

239.0.0.0 - 239.255.255.255 local multicast address

Description of Subnet Mask Calculator

Understanding Multicast Addresses

Multicast addresses are used in networking to allow multiple devices to listen to the same data stream, which is efficient for streaming data to multiple recipients. Here's a breakdown of the ranges mentioned:
  • 224.0.0.0 to 224.0.0.255: These are known as the "well-known" multicast addresses, typically used for network control messages.
  • 224.0.1.0 to 238.255.255.255: This range is designated for global multicast addresses, which can span the entire internet.
  • 239.0.0.0 to 239.255.255.255: These are reserved for local multicast addresses, intended for use within a single network or organization.

Why Use the Subnet Mask Calculator?

This tool is essential for:
  1. Network Configuration: Helping to determine the correct subnet masks for efficient network segmentation.
  2. IP Address Management: Identifying and managing IP address ranges, including multicast addresses.
  3. Troubleshooting: Diagnosing issues related to IP addressing and network connectivity.

How to Use the Subnet Mask Calculator

  1. Enter the IP Address: Input the IP address you are working with.
  2. Enter the Subnet Mask: Provide the subnet mask for the network.
  3. Calculate: The tool will calculate and display the network address, broadcast address, and the range of usable IP addresses within the subnet.

What the Calculator Can Tell You

The calculator will provide:
  • Network Address: The base address of the network.
  • Broadcast Address: The address used for sending data to all devices on the network.
  • Usable IP Range: The range of IP addresses that can be assigned to devices within the subnet.

Importance of Subnet Masks

Subnet masks are crucial because:
  • Network Segmentation: They allow for the division of a network into smaller, more manageable subnetworks.
  • Optimized Routing: They help in efficient routing of data packets within a network.
  • Security: They can enhance network security by isolating different segments of the network.
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