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Deployment of Internet Protocol Version 6 ("IPv6), the next generation of the "Internet Protocol, has been in progress since the mid-2000s.

IPv6 was designed as a replacement for "IPv4 which has been in use since 1982, and is in the final stages of "exhausting its unallocated address space, but still carries most Internet traffic.[1] On Sunday 13 August 2017, Google's statistics show IPv6 availability to approximately 20% of its users. It is used more on weekends[2] and adoption is uneven across countries and Internet service providers.

In November 2016, 1491 (98.2%) of the 1519 "top-level domains (TLDs) in the Internet supported IPv6 to access their domain name servers, and 1485 (97.8%) zones contained IPv6 "glue records, and approximately 9.0 million domains (4.6%) had IPv6 address records in their zones. Of all networks in the global BGP routing table, 29.2% had IPv6 protocol support.[3] [4]

By 2011, all major operating systems in use on personal computers and server systems had production-quality IPv6 implementations. Cellular telephone systems present a large deployment field for Internet Protocol devices as mobile telephone service is making the transition from "3G to "next-generation" "4G technologies, in which voice is provisioned as a "voice over IP (VoIP) service. This mandates the use of IPv6 for such networks. In 2009, the US cellular operator "Verizon released technical specifications for devices to operate on its "next-generation" networks.[5] The specification mandates IPv6 operation according to the 3GPP Release 8 Specifications (March 2009), and deprecates IPv4 as an optional capability.[5]

Major providers of Internet services, both ISPs and content providers, have implemented IPv6 transport into their products.[6]


Deployment evaluation tools[edit]

Number of IPv6 prefixes and AS on the Internet since 2003
Monthly IPv6 allocations per RIR

Google publishes statistics on IPv6 adoption among Google users. A graph of IPv6 adoption since 2008 and a map of IPv6 deployment by country are available.[7][8]

Akamai publishes by-country and by-network statistics on IPv6 adoption for traffic it sees on its global Content Distribution Network (CDN). This set of data also shows graphs for each country and network over time.[9]

A global view into the growing IPv6 routing tables can be obtained with the SixXS Ghost Route Hunter.[10] This tool provides a list of all allocated IPv6 prefixes and marks with colors the ones that are actually being announced into the Internet BGP tables. When a prefix is announced, it means that the "ISP at least can receive IPv6 packets for their prefix.

The integration of IPv6 on existing network infrastructure may be monitored from other sources, for example:

IPv6 testing, evaluation, and certification[edit]

A few organizations are involved with international IPv6 test and evaluation, ranging from the United States Department of Defense to the University of New Hampshire.

Major milestones[edit]

Year Major development and availability milestones
1996 "Alpha quality IPv6 support in "Linux kernel development version 2.1.8.[15]
"6bone (an IPv6 virtual network for testing) is started.
1997 By the end of 1997 "IBM's "AIX 4.3 is the first commercial platform supporting IPv6.[16][17]
Also in 1997, Early Adopter Kits for "DEC's operating systems, "Tru64 and "OpenVMS, are made available.[18]
1998 "Microsoft Research[19] releases its first experimental IPv6 stack. This support is not intended for use in a production environment.
1999 In February, the IPv6 Forum[20] is founded by the IETF Deployment WG to drive deployment worldwide. This results in the creation of regional and local IPv6 Task Forces.
2000 Production-quality BSD support for IPv6 becomes generally available in early to mid-2000 in "FreeBSD, "OpenBSD, and "NetBSD via the "KAME project.[21]
Microsoft releases an IPv6 technology preview version for "Windows 2000 in March 2000.[19]
"Sun "Solaris supports IPv6 in Solaris 8 in February.[22]
"Compaq ships IPv6 with "Tru64.[18]
2001 In January, Compaq ships IPv6 with OpenVMS.[18]
"Cisco Systems introduces IPv6 support on "Cisco IOS routers and L3 switches.[23]
"HP introduces IPv6 with "HP-UX 11i v1.[24]
On April 23, 2001, the "European Commission launches the European IPv6 Task Force[25]
2002 "Microsoft "Windows NT 4.0 and "Windows 2000 SP1 have limited IPv6 support for research and testing since at least 2002.
Microsoft "Windows XP (2001) supports IPv6 for developmental purposes. In Windows XP SP1 (2002) and "Windows Server 2003, IPv6 is included as a core networking technology, suitable for commercial deployment.[26]
IBM "z/OS supports IPv6 since version 1.4 (general availability in September 2002).[27]
2003 "Apple "Mac OS X v10.3 "Panther" (2003) supports IPv6 which is enabled by default.[28]
2004 In July, "ICANN announces that IPv6 address records for the Japan (jp) and Korea (kr) country code top-level domain nameservers are visible in the "DNS root server zone files with serial number 2004072000. The IPv6 records for France (fr) are added later. This makes IPv6 DNS publicly operational.
2005 "Linux 2.6.12 removes experimental status from its IPv6 implementation.[29]
2007 Microsoft "Windows Vista (2007) supports IPv6 which is enabled by default.[26]
Apple's "AirPort Extreme 802.11n base station includes an IPv6 gateway in its default configuration. It uses 6to4 tunneling and manually configured static tunnels.[30] (Note: 6to4 was disabled by default in later firmware revisions.)
2008 On February 4, 2008, IANA adds AAAA records for the IPv6 addresses of six root name servers.[31][32] With this transition, it is now possible to resolve domain names using only IPv6.
On March 12, 2008, "IETF does an hour long IPv4 blackout at its meeting as an opportunity to capture informal experience data to inform protocol design work going forward;[33] this led to many fixes in operating systems and applications.
On May 27, 2008, the "European Commission publish their Action Plan for the deployment of Internet Protocol version 6 (IPv6) in Europe,[34] with the aim of making IPv6 available to 25% of European users by 2010.[35]
2011 On June 8, 2011, the "Internet Society, in conjunction with several large companies and organizations, held "World IPv6 Day, a global 24 hour test of IPv6.[36][37]
2012 On June 6, 2012, the "Internet Society, in conjunction with many large companies and organizations, held "World IPv6 Launch Day, a global permanent deployment of IPv6.[38][39]

Operating system support[edit]

By 2011, all major operating systems in use on personal computers and server systems had production-quality IPv6 implementations.[40] "Microsoft Windows has supported IPv6 since "Windows 2000, and in production-ready state beginning with "Windows XP. "Windows Vista and later have improved IPv6 support.[41] "macOS since "Panther (10.3), "Linux 2.6, "FreeBSD, and "Solaris also have mature production implementations. Some implementations of the "BitTorrent peer-to-peer file transfer protocol make use of IPv6 to avoid NAT issues common for IPv4 private networks.[42]

Government encouragement[edit]

In the early 2000s, governments increasingly required support for IPv6 in new equipment. The "US government, for example, specified in 2005 that the network backbones of all federal agencies had to be upgraded to IPv6 by June 30, 2008; this was completed before the deadline.[43][44][45][46] In addition, the US government in 2010 required federal agencies to provide native dual-stacked IPv4/IPv6 access to external/public services by 2012, and internal clients were to utilize IPv6 by 2014.[47] Progress on the US government's external facing IPv6 services is tracked by NIST. The government of the "People's Republic of China implemented a "five-year plan for deployment of IPv6 called the "China Next Generation Internet (see below).

IPv4 sunset[edit]

On March 07, 2013, the "Internet Engineering Task Force, created a working group for IPv4 sunset.[48][49]

Deployment by country[edit]


AnwarNet (www.anwarnet.dz); AfriNIC has allocated range of IPv6 address space to AnwarNet. AnwarNet started IPV6 services in 2011.





As of 2017, Brazil has 20% IPv6 adoption[68], IPv6 being adopted by most universities, companies and made available for home users by larger ISPs.


Has constructed a research center to study the possibilities of adopting IPv6 in the country. The center will operate alongside another facility, which is equipped with an "IBM "Blue Gene/P supercomputer.[69]

Since 2015 the ISP Blizoo enabled IPv6 for many home customers.

At the end of 2016, the ISP ComNet Bulgaria Holding Ltd. has provided complete IPv6 support for all customers and households within company network in Bulgaria.[70]


IPv6 deployment is slow but ongoing, with major Canadian ISPs (notably "Shaw Communications, "Bell Canada, "Vidéotron, and "Cogeco) lacking in support for its residential customers, and the majority of their business customers (including server packages). Canadian IPv6 usage jumped from 0.5% in July 2015 to 7% in Dec 2015 due to IPv6 deployment at "Rogers and "Telus.["citation needed]

According to Google's statistics, Canada has reached an IPv6 adoption rate of 16% by December 2016.[71][72]


The "China Next Generation Internet (CNGI, 中国下一代互联网) project is a five-year plan initiated by the Chinese government with the purpose of gaining a significant position in the development of the Internet through the early adoption of IPv6. China showcased CNGI's IPv6 infrastructure during the "2008 Summer Olympic Games, being the first time a major world event has had a presence on the IPv6 Internet.[81] At the time of the event, it was believed that the Olympics provided the largest showcase of IPv6 technology since the inception of IPv6.[82] The deployment of IPv6 was widespread in all related applications, from "data networking and camera transmissions for sporting events, to civil applications, such as "security cameras and "taxis. The events were "streamed live over the Internet and networked cars were able to monitor "traffic conditions readily, all network operations of the Games being conducted using IPv6.[83]

Also, the "CERNET (China Education and Research NETwork, 中国教育和科研计算机网, 教育网) set up native IPv6 (CERNET2), and since then many academic institutions in China joined CERNET2 for IPv6 connectivity. CERNET-2 is probably the widest deployment of IPv6 in China. It is managed and operated jointly by 25 universities.[84] Students in "Shanghai Jiao Tong University and "Beijing University of Posts and Telecommunications, for example, get native IPv6.[85][86]


As of December 2016, the country has only 2% IPv6 traffic (according to both Google and Apnic stats).

A web page (in "Danish) follows national IPv6 deployment.

The ISP Fullrate has begun offering IPv6 to its customers, on the condition that their router (provided by the ISP itself) is compatible.[87] If the router is of a different version, the customer has to request a new router.


Estonian Telekom is providing native IPv6 access on residential and business broadband connections since September 2014. According to Google's statistics, Estonia has reached an IPv6 adoption rate of 18% by end of June 2017.[88][72]


"FICORA (Finnish Communications Regulatory Authority), the "NIC for the ".fi top level domain, has added IPv6 address to DNS servers, and allows entering IPv6 address when registering domains.[89] The registration service domain.fi for new domains is also available over IPv6.

A small Finnish ISP Nebula has offered IPv6 access since 2007.[90]

FICORA held national IPv6 day on June 9, 2015.[91] At that time "Elisa and "DNA Oyj started providing IPv6 on mobile subscriptions, and "Telia Company and DNA Oyj started providing IPv6 on fixed-line connections.

According to Google's statistics, Finland has reached an IPv6 adoption rate of 15% by May 2017.[92][72]


As of May 2017, France has 16% IPv6 traffic (according to Google and 20% Apnic stats).


According to Google's statistics, Germany has reached an IPv6 adoption rate of 30% by end of May 2017.[102][72]

Hong Kong[edit]

Date Entity Description
2004 "Hong Kong Internet Exchange Hong Kong Internet Exchange (HKIX), the local Internet exchange point, started to operate its IPv6 exchange (HK6IX).
2006 Hong Kong Internet Registration Corporation The Hong Kong Internet Registration Corporation, the administrator of the ".hk domain, started offering IPv6 domain name services.
2008 Hong Kong government Hong Kong government enhanced the Government Backbone Network to inter-connect the systems of bureaux and departments using IPv6.
2009 Hong Kong government Hong Kong government enhanced the Government Internet Gateway systems so that the public can access over 200 government websites, including GovHK using IPv6 and use Internet mails to communicate with over 60 government bureaux and departments using IPv6. Also, government users can access IPv6 resources through the Internet.
2012 "Hong Kong Observatory The Hong Kong Observatory launched the IPv6 network time service.[112][113]
2012 Hong Kong government Hong Kong government initiated the Next Generation GovWiFi Programme[114] to provide better and faster free Wi-Fi service, which supported IPv6, for the general public.[115]
2013 goIPv6 Consortium[116] The goIPv6 Consortium introduced free IPv6 tunneling service for Hong Kong users to connect to the IPv6 Internet through their existing IPv4 network connection.[117]


In Hungary Externet was the first ISP starting deploying IPv6 on its network in 2008 August.[118] The service was commercially available since 2009 May.[119][120]

"Magyar Telekom was running tests on its production environments since the beginning of 2009. Free customer trials started on November 2, 2009, for those on ADSL or Fiber Optic.[121][122] Customers are given a /128 via DHCP-ND unless they register their DUID in which case they receive a "/56 – using a static configuration results in a single /64.

According to information on telecompaper.com,[123] "UPC Hungary will start deploying IPv6 in mid-2013, finishing it in 2013.

In 2015, December "RCS&RDS (Digi) has enabled native dual stack IPv6(customers receive dynamic "/64 prefixes) for its "FTTB/"H customers.[124][125][126][127] In November the same year "UPC Hungary introduced "DS Lite(with private IPv4 addresses)[128] which can be enabled on a customer-to-customer basis if the customer asks for it.

Magyar Telekom deployed "dual stack IPv6 (using dynamic "/56 prefixes on "DSL and "GPON and static /56 prefixes on "DOCSIS) for all of its wired (and for all of its compatible mobile) customers in October 2016.[129][130][131][132][133]

According to the statistics of "APNIC, IPv6 use in Hungary as of 2017 June has reached around 11%.[134]

According to "Google's IPv6 statistics the adoption rate at 2017 June was 11%.[135]


According to Google's statistics, India has reached an IPv6 adoption rate of around 22% by May 2017.[72]


Growth of IPv6 in Ireland as seen by Google.


According to Google's statistics, Japan has reached an IPv6 adoption rate of 17% by May 2017.[142][72]


The "LITNET academic & research network has supported IPv6 since 2001. Most commercial ISPs have not publicly deployed IPv6 yet.


According to Google's statistics, Luxembourg has reached an IPv6 adoption rate of 24% by May 2017.[147][72]


New Zealand[edit]

As of 2012, surveys conducted by the New Zealand IPv6 Task Force indicated that awareness of IPv6 had reached a near-universal level among New Zealand's large public- and private-sector organisations, with adoption mostly occurring as part of normal network refresh cycles. Most of New Zealand's ISP and carrier community have a test environment for IPv6 and many["quantify] have started bringing IPv6 products and services on-stream.[164] An increasing number of New Zealand government websites are available over IPv6, including those of the "Ministry of Defence (New Zealand), "Ministry for Primary Industries (New Zealand) and the "Department of Internal Affairs.


The government is in process of upgrading its facilities. "Globe Telecom has already set in motion the transition of its core IP network to IPv6, noting that it is now fully prepared even as the Internet runs out of IPv4 addresses. Globe claims it is the first local telecommunication company to test IPv6 with "Department of Science and Technology (Philippines). In some cases, like test networks or users, IPv6 or both maybe present.[166]



Russian Federation[edit]


The Sudanese IPv6 task Force SDv6TF was formed in 2010 to fellow the implementation of IPv6 migration plan (2011–2015).[172]

By November 2012, all telecom operators are becoming IPv6 enabled, this wast tested for the first time at the AFRINIC-17 meeting held in Khartoum.[173]

SudREN[174] (Sudanese Research and Education Network) is the first ISP to provide native IPv6 connectivity of the member institution. By August 2014, SudREN.edu.sd is fully IPv6 Enabled. Two certification received from IPv6 Forum,[175] for WWW and ISP Enabled Logos.


Operators offering native IPv6 access for business clients and collocation customers include "Tele2 and Phonera.



Started deploying IPv6 in 2010. In 2011, ATI (Tunisian Internet Agency) obtained a new IPv6 bloc from Afrinic (2c0f:fab0::/28). In 2013–2015, Gnet (Global Net), and CIMSP (Computing Departement of Health Ministry) received IPv6 prefixes from Afrinic. Deployment of an IPv6 tunnel between ATI and HE (Hurricane Electric). In 2016, CCK (Centre de Calcul El Khawarizmi) obtains its own IPv6 (/32) bloc from Afrinic. In 2016, ISET Charguia (Higher Institute of Technologies in Tunisia) deployed its IPv6 network as end user.

United Kingdom[edit]

United States[edit]

In the United States the majority of smartphones use IPv6, but only a small percent of computers and tablets use IPv6.

Date Entity Description
2000 "Stealth Communications "Stealth Communications (AS8002) has been providing production IPv6 since 2000 when it received its pTLA status on "6bone.[186] The company later received its sTLA allocation from ARIN in 2001, making it the 12th organization at that time to receive production IPv6 addressing in North America.[187][188]
2005 "Sonic.net "Sonic.net offers partial support for IPv6. They assign a /60 to any customer requesting address space and deliver the IPv6 packets over a "6in4 tunnel.[189]
2008 "Department of Defense As with IPv4, the "Department of Defense holds a larger IPv6 allocation than any other entity, a /13 block, enough to create almost 2.3 quadrillion (2.3×1015) local area networks, 64 times as many as the next largest entity.[190]
2008 "Hurricane Electric "Hurricane Electric (AS6939),[191] an early IPv6 adopter and maintains a native IPv6 backbone and as of 2008 was one of the largest IPv6 connectivity and hosting providers in the United States. It was the first IPv6 backbone operator in the world to reach 200 IPv6 "BGP adjacencies. Through its IPv6 "tunnel broker service,[192] Hurricane also provides free IPv6 connectivity to users in the United States and in several other countries.
2011 "Comcast "Comcast started IPv6 pilot market deployment in 2011.[193][194]
2011 "Time Warner Cable "Time Warner Cable was conducting IPv6 trials for their customers from September 2011.[195]
2011 "AT&T "AT&T started testing their networks with IPv6 in 2006.[196] and started rolling out IPv6 to customers with compatible CPEs in Q4 2011.[197]
2012 "US Department of Education "US Department of Education (ED) became the first cabinet-level agency to deploy IPv6 on its DNS services across its 17 .gov domains on August 5, 2012.[198]
2012 "Google Fiber "Google Fiber launched with IPv6 support in 2012.
2012 "Charter Communications "Charter Communications offers IPv6 access to all of its customers via a freely accessible "IPv6 rapid deployment server since at least March 2012.[199]
2012 "CenturyLink "CenturyLink offered IPv6 access to all of its customers since at least 2012.[200]
2013 "T-Mobile "T-Mobile has made IPv6 its default phone configuration for all new Android 4.3+ devices.[201] using "464XLAT.[202] As of December 2013, phones configured by default for IPv6 / 464XLAT include the Samsung Galaxy Note 3, Galaxy Light, MetroPCS Samsung Mega, and the Google Nexus 5.[203]
2013 "Verizon Wireless As of June 2013, over 31%[204] of all users on Verizon Wireless had IPv6.
2016 "Verizon Wireless As of June 2016, over 72%[205] of all users on Verizon Wireless had IPv6.
2017 "Hurricane Electric "Hurricane Electric (AS6939) becomes the first Internet backbone in the world to reach 4000 IPv6 BGP adjacencies.[206]

Further countries[edit]


World IPv6 Day[edit]

"The Internet Society promoted June 8, 2011, as "World IPv6 Day".[207] The event was described as a "test drive" for full IPv6 rollouts.[208]

World IPv6 Launch[edit]

The Internet Society declared June 6, 2012, to be the date for "World IPv6 Launch", with participating major websites enabling IPv6 permanently, participating ISPs offering IPv6 connectivity,[209] and participating router manufacturers offering devices enabled for IPv6 by default.[209][210]

See also[edit]


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