Private IP Address Ranges for Networks

By Doug Lowe

Part of Networking For Dummies Cheat Sheet

Private IP (Internet protocol) address blocks are the IP addresses most often used for private networks. Most networks use addresses in one of these ranges:

  • 10.0.0.0 to 10.255.255.255

  • 172.16.0.0 to 172.31.255.255

  • 192.168.0.0 to 192.168.255.255