The measurement activities below track different aspects of IPv6 deployment on the global Internet. The different measurements show various dimensions of the answer to the question of how broadly IPv6 is being used on the global Internet. The tables, charts, and links provide answers to questions such as: which websites have enabled IPv6, how many visitors to a specific website are using IPv6, how many networks have significant IPv6 deployment, and how much traffic at an Internet exchange is using IPv6?


Network operator measurements, 8th October 2014 (notes)

Participating Network ASN(s) IPv6 deployment
Comcast 7015, 7016, 7725, 7922, 11025, 13367, 13385, 20214, 21508, 22258, 22909, 33287, 33489, 33490, 33491, 33650, 33651, 33652, 33653, 33654, 33655, 33656, 33657, 33659, 33660, 33661, 33662, 33664, 33665, 33666, 33667, 33668, 36732, 36733 31.63% 1
ATT 6389, 7018, 7132 24.99% 2
KDDI 2516 15.34% 3
Deutsche Telekom AG 3320 28.05% 6
Verizon Wireless 6167, 22394 59.05% 4
Time Warner Cable 7843, 10796, 11351, 11426, 11427, 12271, 20001 10.66% 5
Free 12322 39.31% 7
Telenet 6848 38.89% 8
Liberty Global 5089, 6830, 20825, 29562 4.21% 9
Telefonica del Peru 6147 12.99% 11
RCS & RDS 8708 26.01% 12
T-Mobile USA 21928 43.87% 10
Chubu Telecommunications 18126 28.53% 14
SoftBank BB 17676 2.94% 15
Swisscom 3303 25.10% 16
Belgacom 5432 15.15% 17
VOO 12392 56.34% 18
Telefonica Czech Republic 5610 17.17% 20
Telekom Malaysia 4788 7.22% 13
Hughes Network Systems 6621 27.71% 19
Forthnet 1241 16.46% 22
OTE SA 6799 7.64% 21
XS4ALL 3265 38.24% 23
Opera Software ASA 39832 10.36% 24
Orange Poland 5617, 43447 1.11% 25
Google Fiber 16591 76.02% 26
Get AS, Norway 25400, 41164, 47853, 49455, 51135 20.20% 27
Telenor Nordic 2119 3.66% 29
Chunghwa Telecom (HiNet) 3462, 9680, 17419 0.24% 30
BH Telecom d.d. Sarajevo 9146 5.56% 33
StarHub 4657, 55430 4.18% 28
Internode 4739 4.15% 34
EPT Luxembourg 6661 32.20% 42
CORPORACION NACIONAL DE TELECOMUNICACIONES 14420, 27757, 27948, 27968 2.55% 41
University of Pennsylvania 55 76.51% 37
Janet 786 4.55% 32
Tele2 AB 1257 3.29% 43
OVH 16276 18.01% 39
Cisco 109 38.95% 31
M1 Limited 4773, 17547 2.67% 44
Monash University 56132 21.28% 52
its communications Inc.(iTSCOM) 9365 3.86% 36
CESNET 2852 14.72% 38
University of Minnesota 57, 217 55.01% 35
MediaCat Div./Community Netowork Center Inc. 17529 7.82% 54
Indiana University 87 22.00% 40
University of Buffalo 3685 65.67% 49
Virginia Tech 1312 66.57% 45
inexio KGaA 42652 19.94% 62
SKTelecom 9644 0.34% 48
University of South Florida 5661 66.62% 57
Belnet 2611 9.60% 46
UNINETT 224 32.11% 56
BelWue 553 6.51% 63
T-Mobile Czech Republic, a.s. 13036 2.04% 66
Kasetsart University 9411 39.58% 71
NTT Communications 2914 3.69% 70
Louisiana State University 2055 76.04% 50
University of Vermont 1351 71.10% 72
LITNET 2847 18.31% 65
Xfone 018 47956 5.43% 75
NIIF/Hungarnet 1955 15.94% 60
Rensselaer Polytechnic Institute 91 51.74% 73
Nettel Telecomunicações Ltda 53135 7.26% 88
Leibniz Supercomputing Centre 12816 29.47% 59
Greek Student Network 197121 3.46% 77
Centurylink 209 0.34% 82
SWITCH 559 7.54% 55
Marist College 6124 64.54% 92
ARNES 2107 20.27% 58
Altibox AS 29695 1.88% 91
Gustavus Adolphus College 17234 84.12% 94
RedIRIS 766 8.18% 51
China Telecom 4134, 4809 0.24% 74
AAISP 20712 28.97% 89
Australian Academic and Research Network (AARNet) 7575 1.80% 85
Hurricane Electric 6939 11.44% 83
University of California, San Diego 7377 13.86% 79
FCCN 1930 22.86% 53
UniNet 4621 7.06% 93
University of Iowa 3676 41.23% 76
University of California, Los Angeles 52 6.03% 84
green.ch AG 1836 7.01% 109
Jiří štrohalm 197307 58.95% 113
Elion 3249 0.81% 47
Starlink 34602 2.28% 108
University Of Hawaii System 6360 23.72% 64
Funet 1741 17.73% 86
Solcon 12414 8.62% 101
SuperCSI 2506 2.80% 107
FasterNet Internet Service Provider 28580 1.46% 98
Init7 13030 5.10% 117
CJSC Progressive Technologies 35475 7.77% 115
University of Wisconsin - Madison 59 6.72% 87
DegNet GmbH 20902 52.68% 126
LeaseWeb BV 16265 0.77% 116
PT Cyberindo Aditama (CBN Internet) 4787 1.40% 110
LENTEL 44030 33.77% 132
AMRES - Serbian National Research and Education Network 13092 32.40% 80
GlobalConnect 42525 1.69% 124
Greek Research & Technology Network 5408 27.64% 90
UFSCar 52888 43.27% 97
DMZGlobal 17649 7.70% 241
SoftLayer Technologies 36351 1.28% 133
RENATER 2200 4.66% 67
GARR 137 1.43% 81
Academia Sinica Network 9264 11.85% 128
Storm Internet 13319 6.36% 135
TekSavvy Solutions 5645 0.19% 119
SURFnet 1103 1.26% 99
HEAnet 1213 3.68% 95
UNESP 53166 21.87% 68
guifi.net 49835 37.10% 139
NETIS TELECOM 25592 11.73% 149
kwaoo.com 24904 23.35% 141
Television Costa Blanca SL 199952 32.68% 138
PT Telekomunikasi Indonesia 7713 18.53% 134
Karlsruhe Institute of Technology (KIT) 34878 44.72% 112
PowerTech Information Systems AS 5381 6.90% 127
Bredband2 AB 29518 0.21% 154
Bangalore Broadband Network Pvt Ltd 55947 2.18% 136
RESTENA 2602 6.34% 150
CICA/Junta de Andalucía 198096 35.66% 105
SPAWAR 22 62.09% 102
TUBITAK ULAKBIM / ULAKNET 8517 1.89% 61
Tulane University 10349 8.60% 118
National Technical University of Athens 3323 7.38% 106
edpnet 9031 1.94% 146
Bulgaria NREN 6802 39.33% 147
Dhiraagu 7642 0.88% 160
Sunrise Communications AG 5426, 6730, 9214 0.26% 166
ETB SA ESP 19429 0.17% 153
ADDIX Internet Services 25415 1.45% 180
AIMES Grid Services CIC 48954 50.48% 181
AMS-IX 1200 37.79% 182
ATM S.A. 15694 0.23% 155
AdNet Telecom 5541 0.21% 187
Airsat 28026 0.25% 190
Alhambra Eidos 15450 50.29% 192
Alog Data Centers do Brasil 16397, 26592 0.84% 157
Association tetaneutral.net 197422 60.41% 196
Atlas Networks 21743 0.80% 197
BIT BV 12859 2.21% 199
BSO Network Solutions 31216 0.39% 200
Bogons Ltd 3213 0.93% 212
CEDIA 27841 50.65% 217
CESCA 13041 0.57% 218
CZ.NIC 25192 46.49% 225
Choopa, LLC 20473 0.51% 145
Claranet 8426 0.47% 156
CloudFlare, Inc. 13335 2.19% 230
Core-Backbone GmbH 33891 1.51% 235
Critical Colocation 52342 47.07% 236
Custodian Data Centre 50300 0.15% 237
Cybera Inc 15296 1.11% 238
DTS 24183 2.86% 242
DataChambers 29765 1.23% 243
Defense Research and Engineering Network 668 7.64% 104
DirectVPS 29028 77.22% 249
DreamHost 26347 7.04% 251
Duocast BV 31477 1.39% 252
E-Werk Wels AG - it&tel 21013 0.13% 253
EGATE Networks Inc. 13657 0.49% 255
ENTANET International Ltd. 8468 0.24% 256
Ehiweb.it 43989 3.46% 258
Etop sp. z o.o. / DataHouse.Pl 20853 50.12% 264
Exponential-e 25180 4.66% 148
FX Networks 9503 0.25% 268
FidoNet 8282 26.15% 271
FirstDigital Telecom 13415 0.25% 272
Fluidata 39545 50.04% 275
FranTech Solutions 53667 0.86% 276
Free University of Bozen-Bolzano 51708 65.01% 140
Fundacao Parque Tecnologico Itaipu - Brasil 263083 81.99% 114
GITN Sdn Berhad 38044 2.29% 103
Georgia Institute of Technology 2637 0.88% 281
Georgian College of AA&T 19764 0.48% 282
Go6 Institute 198644 72.88% 284
Host Virtual, Inc 36236 23.06% 290
Host.MD 28990 8.55% 291
IKS GmbH 15725 1.85% 297
IP-Max SA 25091 17.92% 298
ITsjefen AS 44381 51.86% 300
JT 8681 1.46% 309
Jaguar Network 30781 8.09% 310
Jolokia Networks? 12182 0.43% 312
LGA Telecom Pte Ltd 10024 0.35% 318
Layer42 Networks 8121 6.47% 324
Louisiana Optical Network Initiative 32440 1.94% 152
MERLIN 16796 0.48% 331
MaineREN - University of Maine System 557 0.73% 334
Makonix 52173 1.03% 336
Maxiweb Internet Provider 28140 5.84% 338
Micro Logic Systems 56055 1.69% 342
NETHINKS GmbH 8319 0.18% 347
NYI 11403 0.34% 351
National Informatics Centre 4758 0.52% 161
Neo Telecoms 8218 13.03% 129
Neology 37105 4.28% 356
NetAssist 29632 20.41% 358
NetNam Corporation 24173 0.40% 359
Netnod 8674 72.18% 360
Netwerkvereniging Coloclue 8283 0.68% 361
NineWire Pty LTd 132020 99.69% 363
Novso 25358 99.35% 367
Opensvit - PEF Fenix VT 39399 1.76% 372
Oxilion B.V. 48539 0.21% 378
PCextreme B.V. 48635 6.97% 380
PREGINET 9821 50.23% 381
PT. Wifian Solution 58485 2.15% 389
PoP-RS 2716 4.63% 100
PoP-SP RNP 1916 0.28% 121
Ponto de Presença da RNP na Bahia 53164 51.05% 143
Portal Itaipu 262841 0.41% 394
RAU - UdelaR 1797 51.58% 404
Red Académica de Centros de Investigación y Universidades Nacionales REACCIUN 20312, 27807 15.65% 407
Redstone 5552 8.26% 409
Remex Consulting Pty Limited 55328 75.18% 411
SAI 18931 0.39% 414
SARENET 3262 6.33% 415
SIDN 1140 60.88% 416
Safaricom Ltd 37061 0.28% 419
Saturn-Internet, ISP 31692 3.82% 421
Sauk Valley Community College 13953 33.17% 422
Sify Technologies Limited 9583 0.12% 429
Signet B.V. 28878 2.71% 430
Sistemas Fratec S.A. 262149 7.73% 434
Sparkation Pte Ltd 45634 4.69% 446
Spectrum Networks 11404 5.32% 447
SpeedPartner GmbH 34225 98.52% 448
SteepHost DC-UA 47142 2.35% 450
Sudanese Research and Education Network 37197 0.93% 453
SuperInternet Access Pte Ltd 4844 50.57% 454
SupraNet Communications, Inc 4150 0.28% 455
TB Telecom Sp. z o.o. 51155 2.29% 456
TOP-IX Consortium 25309 86.16% 458
TeliaSonera International Carrier 1299 1.38% 464
ThaiSarn 3836 49.29% 467
The Kansas Research and Education Network 2495 1.64% 468
The Tertiary Education and Research Network of South Africa (TENET) 2018 4.12% 130
Trunk Networks Limited 49375 51.38% 473
U.S. Department of Education 10442 79.20% 120
UNAM 278 3.92% 478
US Dept of Transportation 2576 9.25% 480
University of New Hampshire 11745 50.49% 163
Viewqwest Pte Ltd 18106 0.22% 494
Vmax Net Telecomunicacoes do Brasil 28277 0.55% 498
ZeelandNet 15542 6.86% 514
Zimcom Internet Solutions, Inc 30059 3.66% 515
Zvezda Telecom 21367 50.10% 516
domainfactory GmbH 34011 0.42% 518
iNES Group 12310 0.54% 522
internet4YOU GmbH & Co. KG 29014 0.70% 523
interscholz Internet Services GmbH & Co. KG 33843 66.60% 524
iway AG 8758 4.18% 525
manitu GmbH 34240 8.86% 526
mc.net 6479 17.66% 527
mur.at - Verein zur Frderung von Netzkwerkkunst 39837 57.91% 528
next layer Telekommunikationsdienstleistungs- und BeratungsGmbH 1764 1.01% 159
prgmr.com 47066 32.70% 530


Percentage of Alexa Top 1000 websites currently reachable over IPv6

Measurements every hour from AS35425


IPv6 traffic volume at AMS-IX




Other measurement sites and tools


Notes on network operator measurements

We present measurements of network operator participants in World IPv6 Launch, based on data received from major website participants, as described in more detail below (Facebook provided data to the end of 2013). We present a simple average of the data received, and list all networks with measurements from at least two sources, with a simple average above 0.1%. The network operator participants list includes some networks that measured above the threshold leading up to June 6th 2012, but for which we have insufficient measurement data to list here.

Akamai: We are reporting adoption rates based on the percentage of IPv6 requests we receive to a selection of dual-stacked properties on Akamai's content, site, and application delivery platform. The hundreds of billions of IPv4 and IPv6 requests analyzed across a 24-hour window represent traffic to a diverse set of customer sites across various industries, geographies, and user populations.

Facebook: On June 6th, we examined page loads from randomly selected users. For each user we are able to test if they are using IPv6 to communicate with Facebook. We also know which ISP (World IPv6 Launch participant) they are using at their location. After collecting all data for June 6th, we calculated the percent of unique IPv6 users out of total unique users we saw from each ISP. Many millions of page loads were in our 24-hour data capture for these statistics.

Google: We measure IPv6 adoption among Google users by adding measurement JavaScript to a random sample of visits to various Google properties. The methodology is similar to that described in our paper, Evaluating IPv6 adoption in the Internet. The JavaScript uses HTTP to fetch a URL from an IPv4-only hostname and a URL from a dual-stack hostname, in random order, and then reports the results. The measurement is attributed to the ASN that originates the user's IPv4 address. Measurement endpoints use the same infrastructure that serve regular Google traffic.

Yahoo!: We are reporting adoption rates based on the percentage of IPv6 requests we receive on our Content Distribution Network (CDN). Yahoo!'s CDN is responsible for serving images, JavaScript, and other static images on behalf of most Yahoo! products world wide. This provides a view across diverse markets and interest groups.