Infinite IP Subnet & CIDR Solver

Precision network planning and diagnostic auditor. Calculate usable ranges and binary masks instantly.

Network Address
0.0.0.0
Broadcast Address
0.0.0.0
Usable IP Range
0.0.0.0 - 0.0.0.0
Subnet Mask
0.0.0.0
Total Usable Hosts
0
Network Class
C
IP Address:
Subnet Mask:
Network:

What is IP Subnetting?

IP Subnetting is the practice of dividing a network into two or more smaller networks. It improves routing efficiency, enhances security, and helps in better management of IP addresses. Our online IP subnet calculator provides an automated diagnostic tool for network administrators to calculate masks and ranges without manual bit-manipulation. A consistent CIDR diagnostic auditor is key to optimizing enterprise network performance.

Understanding CIDR Notation

CIDR (Classless Inter-Domain Routing) notation like /24 or /16 represents the number of leading 1-bits in the subnet mask. By using our network range diagnostic tool, you can quickly find the first and last usable IP in any given subnet. This advanced network auditor is essential for configuring firewalls, load balancers, and internal routing tables.

Privacy and Pure Networking

At 99tool.in, all IP calculations are performed locally in your browser sandbox. We do not store your IP addresses or network configurations. This private subnet tool provides professional-grade results without any data being transmitted to a server. Whether you are a student studying for CCNA or a professional engineer planning a VLAN, our secure network calculator ensures your configurations remain purely yours.