Private address
192.168.100.1
192.168.100.1 is in 192.168.0.0/16, one of the three private address blocks (RFC 1918). It isn't routed on the public internet, so there's nothing public to look up. The address of the status page built into most cable modems.
At a glance
- Block
- 192.168.0.0/16
- Defined in
- RFC 1918
- On the public internet
- No
About this block
RFC 1918 sets aside 10.0.0.0/8, 172.16.0.0/12 and 192.168.0.0/16 for private networks. Any home, office or data center can use them, so the same address is in use on millions of separate networks at once.
A router translates them to its own public address on the way out (NAT). That's why a private address says nothing about who's using it: 192.168.1.1 on your network and on your neighbor's are different devices.
Where you'll see it
- Your router's settings page, often at 192.168.0.1, 192.168.1.1 or 10.0.0.1.
- The addresses your router hands to devices on its network.
- The first hop of a traceroute, which is usually your own router.
- Inside cloud networks (AWS VPCs, for example) and Kubernetes clusters.