IPv4reserved
192.88.99.1
Legacy 6to4 transition mechanism • Managed by 6to4 Anycast Relay (RFC 3068 / RFC 7526)
Profile updated: November 2026•Verified against IANA & RIR database allocations
Live Network Diagnostic
Overview of 192.88.99.1
192.88.99.1 was previously assigned for Anycast 6to4 automatic IPv6-over-IPv4 tunneling relays, officially deprecated by RFC 7526 in 2015.
Classification & Technical Details
- Protocol Version: IPv4
- Address Classification: RESERVED (Non-routable / Local Interface)
- Managing Authority / Registry: 6to4 Anycast Relay (RFC 3068 / RFC 7526)
Routing and Operational Purpose
The IP 192.88.99.1 is designated for Legacy 6to4 transition mechanism. In modern networking, proper identification of such infrastructure nodes is essential for diagnosing traceroute latency, verifying forward-confirmed reverse DNS (FCrDNS), and establishing trustworthy security policies.