How do I find the network address from a CIDR block?

The network address is found by applying the subnet mask to the IP address using a binary AND operation. For example, 192.168.1.100/24 has network address 192.168.1.0.

What is the difference between network address and broadcast address?

The network address is the first address in a subnet (host bits all zero) and is not assignable to hosts. The broadcast address is the last address (host bits all one) and sends to all hosts in the subnet.

Does it support supernetting or CIDR aggregation?

The calculator focuses on single subnet analysis. For aggregating multiple CIDR blocks into supernets, use a dedicated CIDR aggregation tool.

Best Free IP Address Calculator

IP address calculations — subnetting, CIDR block analysis, binary conversion, and network range determination — are routine tasks for network engineers, DevOps teams, and cloud architects. devtoolkit.sh's IP Address Calculator combines subnet calculation, IP format conversion, and CIDR analysis in one tool. Enter any IPv4 address with a CIDR prefix and instantly see the network address, broadcast address, subnet mask, usable host range, and number of hosts. The tool also converts between decimal, binary, and hexadecimal representations so you can understand the underlying binary structure of any address. All calculations run locally in your browser.

Dotted Decimal192.168.1.1

Binary11000000.10101000.00000001.00000001

HexadecimalC0A80101

Integer (32-bit)3232235777

FAQ

How do I find the network address from a CIDR block?: The network address is found by applying the subnet mask to the IP address using a binary AND operation. For example, 192.168.1.100/24 has network address 192.168.1.0.
What is the difference between network address and broadcast address?: The network address is the first address in a subnet (host bits all zero) and is not assignable to hosts. The broadcast address is the last address (host bits all one) and sends to all hosts in the subnet.
Does it support supernetting or CIDR aggregation?: The calculator focuses on single subnet analysis. For aggregating multiple CIDR blocks into supernets, use a dedicated CIDR aggregation tool.