CIDR Calculator
Simplify Your Network Planning
What is CIDR (Classless Inter-Domain Routing)?
Classless Inter-Domain Routing (CIDR) is a modern IP addressing scheme that enhances routing efficiency and scalability. Introduced in 1993 to address IPv4 exhaustion, CIDR replaced the rigid class-based system (Class A, B, C) with flexible variable-length subnet masking (VLSM).
CIDR notation uses an IP address followed by a slash (/) and a number indicating the network prefix length (e.g., 192.168.10.0/24). This allows:
Creation of subnets of any size tailored to actual needs
Reduction of routing table sizes via route aggregation
Optimal utilization of scarce IPv4 address space
Smooth transition and scaling to IPv6 networks
CIDR supports supernetting, representing multiple contiguous networks as one route, reducing BGP table size and enhancing internet backbone performance.
CIDR forms the foundation of modern internet architecture, enabling efficient IP distribution, routing control, and scalable network segmentation.
Use the CIDR Calculator
Simplify complex IP planning with precision. VA TV PLUS’s CIDR Calculator delivers fast, reliable subnet calculations for IPv4 and IPv6.
It provides real-time outputs including subnet masks, wildcard masks, total and usable IP ranges, network and broadcast addresses, and reverse DNS zones.
Simply input any IP or CIDR block, and get:
Network and host segmentation
Count of addressable IPs
First and last usable IP addresses
Binary and hexadecimal representations
Supernetting and subnetting options
Multicast and special-use address validation
With dual-stack support and intuitive UX, the tool minimizes manual errors and speeds decision-making.
Calculate CIDRBenefits of Using a CIDR Calculator
Accurate subnet mask calculation
Efficient IP range usage
Lower risk of subnet overlaps
Improved routing and address planning
Support for modern IPv6 networking
Key Features of VA TV PLUS’s CIDR Calculator
Dual-stack IPv4 and IPv6 support
Instant calculation of subnet masks, ranges, and wildcards
User-friendly, fast interface
Conversion between CIDR and IP formats
Export and save results for documentation
Privacy-first: no data storage or tracking
Who Benefits from VA TV PLUS’s CIDR Solutions
Network engineers and architects
ISP infrastructure teams
System administrators
Data center managers
IT departments in large enterprises
DevOps and cloud teams managing virtual networks
How It Works
VA TV PLUS’s CIDR Calculator uses a backend engine that parses and computes IP addressing via binary operations, ensuring precise, standard-compliant results.
1
Input Parsing
Accepts IPv4 or IPv6 addresses or CIDR blocks (e.g., 10.0.0.0/22), validates format, and determines host or network.
2
Prefix Analysis
Calculates network prefix length and subnet boundaries, including broadcast addresses for IPv4.
3
Binary & Decimal Conversion
Displays network address, subnet mask, wildcard mask, and ranges in binary and decimal for auditing and configuration.
4
Address Space Calculation
Supernetting suggestions for route aggregation
Subnetting splits by prefix length or host count
Reverse DNS (PTR) formatting
Classless vs. classful views
IPv6 compression/decompression
5
Output Delivery
Clean, exportable results for configuration files, docs, provisioning, or network management systems.