Protocol assignment

192.0.0.0/24

192.0.0.0/24 is the block reserved for IETF protocol assignments (RFC 6890). It isn't routed on the public internet, so there's nothing public to look up.

At a glance

Block
192.0.0.0/24
Defined in
RFC 6890
On the public internet
No

About this block

192.0.0.0/24 is handed out piece by piece to specific protocols, like the 192.0.0.0/29 that DS-Lite uses between a home router and the ISP's tunnel endpoint. None of it is routed on the public internet.

Where you'll see it

  • Inside ISP equipment and tunnels that use one of these assignments.