IP Addressing and Subnetting
Calculated locally
IP Address Classification Tool
Classify IPv4 and IPv6 addresses by family and special-use categories such as private, loopback, link-local, and documentation.
Learn before you deploy
Reference PacketToolbox learning content related to this workflow.
Tool input
Use the fields below and run the calculation or generation locally.
Results
Review output and validation notes before production use.
How it works
Enter one IP address to inspect family, scope, and reserved/special-use behavior.
All processing runs in-browser with no external API dependency.
Practical example
Example: 192.0.2.5 is documentation space; fe80::1 is IPv6 link-local.
Related tools
Use these together for complete design and troubleshooting workflows.
- IPv4 Subnet Calculator for subnet boundary and wildcard checks.
- VLSM Planner for hierarchical IPv4 allocation.
- Route Summarization Calculator for clean route advertisement planning.
- Cisco ACL Builder for policy-generation workflows.