IP Subnet Calculator
The IP Calculator breaks down a CIDR into its network, first and last host, and broadcast address, essential for network planning.
Key Features
- IPv4 CIDR analysis
- Network and broadcast
- Host range and count
- Wildcard mask
- Local only
Use Cases
- Plan a VLAN
- Size a subnet
- Teach networking
- Verify a config
How to Use
- Enter an IP with prefix
- Read the breakdown
- Use the range
Practical Tips
- /24 gives 254 usable hosts
- Smaller prefixes mean bigger ranges
- Reserve network and broadcast
FAQ
- Usable hosts?
- Total minus network and broadcast addresses.
- CIDR?
- Classless notation like 192.168.0.0/24.