IP Subnet Calculator

Calculate network subnets and IP address information for IPv4 and IPv6

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IP Subnet Calculator

This calculator returns a variety of information regarding Internet Protocol version 4 (IPv4) and IPv6 subnets including possible network addresses, usable host ranges, subnet mask, and IP class, among others.

Quick Navigation

🌐 IPv4 Calculator 🌐 IPv6 Calculator 🔗 Related Calculators 📚 Learn About Subnetting

🌐 IPv4 Subnet Calculator

📊 Subnet Information

IP Address 192.168.1.1
Network Address 192.168.1.0
Usable Host Range 192.168.1.1 - 192.168.1.254
Broadcast Address 192.168.1.255
Total Hosts 256
Usable Hosts 254
Subnet Mask 255.255.255.0
Wildcard Mask 0.0.0.255
IP Class C
CIDR Notation /24

Additional Information

Binary Subnet Mask 11111111.11111111.11111111.00000000
IP Type Private
Short Notation 192.168.1.1/24

🌐 IPv6 Subnet Calculator

🌐 IPv6 Configuration

📊 IPv6 Subnet Information

IP Address 2001:db8:85a3::8a2e:370:7334/64
Full IP Address 2001:0db8:85a3:0000:0000:8a2e:0370:7334
Total IP Addresses 18,446,744,073,709,551,616
Network 2001:0db8:85a3:0000::
IP Range
2001:0db8:85a3:0000:0000:0000:0000:0000
to
2001:0db8:85a3:0000:ffff:ffff:ffff:ffff

Additional Information

Prefix Length /64
Network Prefix 2001:db8:85a3::/64
Host Portion ::8a2e:370:7334
Compressed Format 2001:db8:85a3::8a2e:370:7334

📚 Understanding IP Subnetting

What is Subnetting?

Subnetting is the practice of dividing a network into smaller sub-networks (subnets). This helps with network organization, security, and efficient IP address allocation.

CIDR Notation

Classless Inter-Domain Routing (CIDR) notation uses a slash followed by a number to indicate how many bits are used for the network portion of the address.

Subnet Masks

A subnet mask is used to determine which portion of an IP address refers to the network and which part refers to the host within that network.

About IP Subnetting

A subnet is a division of an IP network (internet protocol suite), where an IP network is a set of communications protocols used on the Internet and other similar networks. It is commonly known as TCP/IP (Transmission Control Protocol/Internet Protocol).

The act of dividing a network into at least two separate networks is called subnetting, and routers are devices that allow traffic exchange between subnetworks, serving as a physical boundary. IPv4 is the most common network addressing architecture used, though the use of IPv6 has been growing since 2006.

An IP address is comprised of a network number (routing prefix) and a rest field (host identifier). A rest field is an identifier that is specific to a given host or network interface. A routing prefix is often expressed using Classless Inter-Domain Routing (CIDR) notation for both IPv4 and IPv6.

Key Benefits of Subnetting

  • Network Organization: Divide large networks into manageable segments
  • Security: Isolate network segments for better security control
  • Performance: Reduce network congestion and improve performance
  • IP Conservation: Efficient use of available IP address space
  • Administrative Control: Easier network management and troubleshooting