One of three blocks reserved for documentation and examples. Safe to reference in books, RFCs, and tutorials without risking collision with a real deployment.
This range is reserved by IANA — it is not allocated to an organization, ISP, or regional internet registry. Addresses here appear on every private/internal network that follows the standard, so lookups will not identify a specific owner. 192.0.2.123/32 is a sub-block of 192.0.2.0/24, the defining reserved range.
All 1 IP addresses in 192.0.2.123/32
BGP Routing
Live BGP anomalies →This block is announced in BGP, observed across our RIPE RIS collectors.
Frequently Asked Questions
What is 192.0.2.123/32?
192.0.2.123/32 falls inside 192.0.2.0/24 — a Documentation (TEST-NET-1) range reserved by RFC 5737. One of three blocks reserved for documentation and examples. Safe to reference in books, RFCs, and tutorials without risking collision with a real deployment.
Is 192.0.2.123/32 routable on the public internet?
No. 192.0.2.123/32 is part of IANA-reserved special-use space (192.0.2.0/24, RFC 5737). Packets with these addresses are either filtered by backbone routers or handled as local/special traffic — they never reach the public internet.
Who owns 192.0.2.123/32?
192.0.2.123/32 is not allocated to any organization or ISP. It is part of the Documentation (TEST-NET-1) block reserved by IANA under RFC 5737 for every network to use privately.
