List of IPv6 tunnel brokers

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The following is a list of IPv6 tunnel brokers[1] that conform to the principles of RFC 3053 which describes a system with which users can request creation of an IPv6 tunnel on a host called a point of presence (PoP) which, using the tunnel, then provides the user with IPv6 connectivity.

List of IPv6 tunnel brokers[edit]

Name PoPs Locations Subnet Tunnelling protocols Features Registration Configuration Language Prefix Server implementation
6in4 4in6 TSP AYIYA heartbeat RDNS BGP Multicast Anonymous Signup Script Manual TSP TIC URL
6fei 1 China Unknown Yes Yes No No No No No No No Yes Yes Yes No No Yes Chinese 2001:e88::/32 Unknown
Aarnet 1 Australia /56 Yes No Yes No No No No No Yes Yes No No Yes No No English 2001:388::/32 gogoSERVER
CITC 1 Saudi Arabia /64 No No Yes No No No No No No Yes No No Yes No No English, Arabic 2001:67c:130::/48 ddtb[2]
gogo6/Freenet6 3[3] Canada, Netherlands, Taiwan /56 on request Yes Yes Yes No No No No No Yes Yes[4] No No Yes No No English 2001:5c0::/32 gogoSERVER
goIPv6 1 Hong Kong /64 Yes No No No No No No No No Yes Yes Yes No No No English 2001:2e0:6002::/48 Self implementation
Hurricane Electric[5] 31[6] Canada, Europe (8 Countries), Hong Kong, Japan, Singapore, United States (9 States) /64 default
/48 through automated system
Yes No No No No Yes Yes No No Yes Yes Yes No No Yes[7] English 2001:470::/32 Unknown
Indonesian IPv6 1 Indonesia /64 or /48 on request Yes No No No No Yes Yes No No Yes Yes Yes No No Yes English 2001:d68::/32 Unknown
IPv6Now 1 Australia /64 or /48 on request Yes No Yes No No No No No No Yes No No Yes No No English 2406:a000::/32 gogoSERVER
NetAssist 1 Ukraine /64
Yes No No No No Yes Yes No No Yes Yes Yes No No Yes[8] English, Russian 2a01:d0:8000::/33 Unknown
NetNam 1 VietNam Unknown Yes No No No No No No No No Yes Yes Yes No No Yes English, Vietnamese 2401:e800::/32 Unknown
SixXS 52[9] Brazil, Europe (21 countries), New Zealand, New Caledonia, Russia, United States (8 States), Vietnam /64 default
/48 on request
Yes No No Yes Yes Yes No Yes No Yes Yes Yes No Yes Yes English Various[10] sixxsd[11]
So-Net 1 Taiwan Unknown Yes No Yes No No No No No No Yes No No Yes No No Chinese 2404:80::/32 gogoSERVER 2 UK/Europe, United States /64 Default, /48 on request Yes No No No No Yes Yes No No Yes Yes Yes No No Yes English 2a04:94e0::/32 Custom

The columns in the table provide the following details:

Name The name of the organisation providing the tunnel broker, this generally maps directly to an Internet service provider.
PoPs Number of PoPs deployed
Locations Locations where the tunnel broker has a point of presence / the number of endpoints where termination can occur.
Subnet What subnet allocation the tunnel broker provides next to the /127 or /64 for the tunnel.
Tunnelling protocols
Which tunnelling protocols are provided by the tunnel broker. This has impact on whether one can use a tunnel behind NAT or in cases where the IPv4 address of the user changes often. Check the relevant protocol descriptions for more details, or see this tunneling comparison.
6in4 Tunnelling of IPv6 packets directly in IPv4, also called 'proto-41' due to the protocol number it uses.
4in6 Tunnelling of IPv4 directly inside IPv6 packets
TSP The Tunnel Setup Protocol. It uses a UDP-based tunnel.
AYIYA AYIYA allows users behind a NAT and/or a dynamic address to maintain connectivity even when roaming between networks. It uses a UDP-based tunnel.
heartbeat[12] Heartbeat tunnels are 6in4 based but allow for dynamic addresses to be updated automatically without user intervention
Features RDNS Whether the tunnel broker provides reverse DNS delegations.
BGP Whether the tunnel broker optionally accepts a BGP peering allowing one to announce one's own address space.
Multicast Whether the tunnel broker optionally provides IPv6 Multicast over a tunnel.
The available registration methods.
Anonymous One can use the service without registration
Signup One is required to sign up and provide details (at minimum an email address)
What methods are available for configuring tunnels and subnets provided by the tunnel broker
Script Indicates that the broker provides a script through the website.
Manual That one can set up the tunnel manually if wanted
TSP Uses the Tunnel Setup Protocol (TSP), thus requires gogoclient
TIC Uses the Tunnel Information and Control (TIC)[13] protocol as implemented by AICCU, AVM FRITZ!Box, Draytek, Motorola and others
URL URL indicates that changes to the tunnel parameters can be made on the website (e.g. enable/disable or change the endpoint)
Language Which languages are supported by the providers web interface and other communication channels.
Prefix Which IPv6 prefix(es) are used for the tunnel broker. If a /32 is indicated, generally only a portion is used for tunnels/subnets for the tunnel broker or the name of the tunnel broker service that is providing the address space.
Server implementation The implementation used by the tunnel broker


There are a variety of tunnel brokers that provide their own implementations based on different business goals. Listed here are the common implementations as used by the listed IPv6 tunnel brokers.

Gogo6 gogoSERVER[edit]

gogoSERVER (formerly Gateway6) is used by the Freenet6 service, which is the first IPv6 tunnel broker service, going into production in 1999. It was started as a project of Viagenie and then Hexago was spun off as a commercial company selling Gateway6, which powered Freenet6, as their flagship product. In June 2009, Hexago became gogo6 through a management buyout and the Freenet6 service became part of gogoNET, a social network for IPv6 professionals.[14]

SixXS sixxsd[edit]

SixXS's sixxsd is what powers all the SixXS PoPs. It is a purpose built software for the purpose of tunneling at high performance and low latency. Development started in 2002[15] and has evolved into the current v4 version of the software.

CITC ddtb[edit]

CITC Tunnel Broker, run by the Saudi Arabia IPv6 Task Force, uses their own implementation of the TSP RFC named 'ddtb'.


  1. ^ AICCU - Tunnelbroker Support, lists tunnel brokers that are supported and unsupported by AICCU
  2. ^ CITC Tunnel Broker
  3. ^ gogo6 Service Status
  4. ^ gogoNET signup for Freenet6
  5. ^
  6. ^ HE Tunnel Server Status
  7. ^ HE Endpoint update
  8. ^ NetAssist URL Update instruction
  9. ^ SixXS Points of Presence
  10. ^ SixXS Prefixes
  11. ^ sixxsd
  12. ^ heartbeat
  13. ^ TIC
  14. ^ What is gogoNET?
  15. ^ SixXS History