192.88.99.2/32 IP Range: 6a44 Relay Anycast Address

Special-Purpose Address Block: 6a44 Relay Anycast Address

This single address is reserved for the 6a44 IPv4/IPv6 relay mechanism.

The address can be forwarded within an administrative domain but is not expected to be globally reachable.

A system administrator may see it in legacy IPv4/IPv6 transition infrastructure or related packet captures.

Firewall tip: allow it only where the 6a44 relay mechanism is intentionally deployed. Do not treat it as an ordinary client address.

Block	Name
0.0.0.0/8	"This" Network
0.0.0.0/32	"This Host on This Network"
10.0.0.0/8	Private Use (RFC 1918)
100.64.0.0/10	Shared Address Space - CGN (Carrier-Grade Network Address Translation)
127.0.0.0/8	Loopback
169.254.0.0/16	Link-Local
172.16.0.0/12	Private Use (RFC 1918)
192.0.2.0/24	Documentation (TEST-NET-1)
192.0.0.0/24	IETF (Internet Engineering Task Force) Protocol Assignments
192.0.0.0/29	IPv4 Service Continuity Prefix
192.0.0.8/32	IPv4 Dummy Address
192.0.0.9/32	Port Control Protocol (PCP) Anycast
192.0.0.10/32	Traversal Using Relays around NAT (TURN) Anycast
192.0.0.170/32	NAT64/DNS64 Discovery
192.0.0.171/32	NAT64/DNS64 Discovery
192.31.196.0/24	Autonomous System 112 (AS112) Service
192.52.193.0/24	Automatic Multicast Tunneling (AMT)
192.88.99.0/24	Deprecated 6to4 Relay Anycast
192.168.0.0/16	Private Use (RFC 1918)
192.175.48.0/24	Direct Delegation Autonomous System 112 (AS112) Service
198.18.0.0/15	Benchmarking
198.51.100.0/24	Documentation (TEST-NET-2)
203.0.113.0/24	Documentation (TEST-NET-3)
224.0.0.0/4	Multicast
240.0.0.0/4	Reserved
255.255.255.255/32	Limited Broadcast

BGP Announcements

Announced Prefix	Relationship	Origin ASN	Description	Country	First Address	Last Address
192.88.99.0/24	Covering	AS6939	Hurricane Electric LLC	United States of America (US)	192.88.99.0	192.88.99.255
192.88.99.0/24	Covering	AS36732	Comcast Cable Communications LLC	United States of America (US)	192.88.99.0	192.88.99.255