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, 15th July 2014 (notes)

Participating Network ASN(s) IPv6 deployment
Comcast 7015, 7016, 7725, 7922, 11025, 13367, 13385, 20214, 21508, 22258, 33287, 33489, 33490, 33491, 33650, 33651, 33652, 33653, 33654, 33655, 33656, 33657, 33659, 33660, 33661, 33662, 33664, 33665, 33666, 33667, 33668, 36733 30.10% 1
ATT 6389, 7018, 7132 20.62% 2
KDDI 2516 11.16% 3
Verizon Wireless 6167, 22394 53.55% 4
Time Warner Cable 7843, 10796, 11351, 11426, 11427, 12271, 20001 10.20% 5
Deutsche Telekom AG 3320 24.36% 6
Free 12322 38.70% 7
Telenet 6848 32.59% 8
Liberty Global 5089, 6830, 20825, 29562 3.97% 9
RCS & RDS 8708 25.11% 10
Telefonica del Peru 6147 8.30% 11
Swisscom 3303 27.84% 13
SoftBank BB 17676 3.03% 12
Chubu Telecommunications 18126 28.29% 15
T-Mobile USA 21928 34.12% 14
VOO 12392 53.72% 16
Hughes Network Systems 6621 27.40% 18
Belgacom 5432 11.63% 17
Telekom Malaysia 4788 4.22% 20
Telefonica Czech Republic 5610 14.77% 19
XS4ALL 3265 34.58% 21
Opera Software ASA 39832 11.19% 22
StarHub 4657, 55430 11.22% 23
OTE SA 6799 2.42% 24
Google Fiber 16591 71.31% 25
Forthnet 1241 4.70% 27
OVH 16276 21.94% 29
Internode 4739 4.67% 28
its communications Inc.(iTSCOM) 9365 3.69% 30
M1 Limited 4773, 17547 3.18% 31
Get AS, Norway 25400, 41164, 47853, 49455, 51135 21.25% 33
EPT Luxembourg 6661 29.25% 32
CORPORACION NACIONAL DE TELECOMUNICACIONES 14420, 27757, 27948, 27968 2.20% 35
Cisco 109 27.02% 26
MediaCat Div./Community Netowork Center Inc. 17529 9.19% 36
NTT Communications 2914 4.96% 42
inexio KGaA 42652 19.30% 48
Janet 786 3.90% 34
BelWue 553 7.16% 43
Leibniz Supercomputing Centre 12816 31.91% 38
Monash University 56132 10.25% 61
China Telecom 4134, 4809 0.27% 51
Xfone 018 47956 6.34% 58
CESNET 2852 10.32% 47
Nettel Telecomunicações Ltda 53135 8.68% 57
Telenor Nordic 2119 0.42% 63
University of Pennsylvania 55 54.90% 40
Indiana University 87 16.84% 39
Australian Academic and Research Network (AARNet) 7575 1.74% 76
Kasetsart University 9411 46.51% 55
Belnet 2611 6.24% 53
TUBITAK ULAKBIM / ULAKNET 8517 2.91% 46
Hurricane Electric 6939 13.01% 70
AAISP 20712 28.30% 67
SuperCSI 2506 3.51% 78
Virginia Tech 1312 65.73% 50
ARNES 2107 25.34% 56
SWITCH 559 8.58% 41
GITN Sdn Berhad 38044 2.21% 77
University of Minnesota 57, 217 42.42% 44
University of South Florida 5661 56.87% 54
FCCN 1930 20.74% 45
green.ch AG 1836 5.94% 81
Altibox AS 29695 1.41% 86
Solcon 12414 19.29% 74
Host Virtual, Inc 36236 19.50% 92
LITNET 2847 13.95% 89
DMZGlobal 17649 12.40% 97
Jiří štrohalm 197307 55.31% 88
AMRES - Serbian National Research and Education Network 13092 33.55% 62
Louisiana State University 2055 71.07% 52
University of Iowa 3676 42.93% 60
TekSavvy Solutions 5645 0.13% 94
GlobalConnect 42525 1.61% 113
CJSC Progressive Technologies 35475 7.78% 106
UNINETT 224 21.63% 72
Academia Sinica Network 9264 13.46% 116
DegNet GmbH 20902 51.09% 103
PT Telekomunikasi Indonesia 7713 16.52% 108
NIIF/Hungarnet 1955 9.54% 75
PT Cyberindo Aditama (CBN Internet) 4787 2.20% 102
University of California, San Diego 7377 16.61% 66
Init7 13030 7.30% 107
RedIRIS 766 5.42% 49
FasterNet Internet Service Provider 28580 1.11% 101
Storm Internet 13319 5.10% 104
guifi.net 49835 37.84% 119
Funet 1741 12.94% 95
LeaseWeb BV 16265 0.39% 111
University of Wisconsin - Madison 59 6.72% 71
Karlsruhe Institute of Technology (KIT) 34878 48.03% 80
JARING Communications Sdn Bhd 2042 0.27% 114
SoftLayer Technologies 36351 0.96% 100
Tulane University 10349 27.31% 83
GARR 137 1.23% 68
Starlink 34602 1.29% 118
LENTEL 44030 15.09% 123
Greek Research & Technology Network 5408 17.96% 91
UFSCar 52888 57.68% 90
edpnet 9031 2.55% 122
UNESP 53166 24.19% 69
Rensselaer Polytechnic Institute 91 35.02% 82
Greek Student Network 197121 0.75% 127
RESTENA 2602 8.32% 130
PowerTech Information Systems AS 5381 3.14% 125
Sunrise Communications AG 5426, 6730, 9214 0.14% 142
ETB SA ESP 19429 0.15% 134
ADDIX Internet Services 25415 1.45% 154
AIMES Grid Services CIC 48954 50.33% 155
AMS-IX 1200 49.82% 156
ASDASD srl / POPWIFI 28929 1.45% 157
ATM S.A. 15694 0.12% 128
Alhambra Eidos 15450 50.77% 167
Alog Data Centers do Brasil 16397, 26592 1.08% 168
Association tetaneutral.net 197422 57.77% 172
Atlas Networks 21743 0.85% 173
BIT BV 12859 2.55% 175
BSO Network Solutions 31216 0.96% 176
Black Lotus Communications 32421 0.91% 184
Bogons Ltd 3213 0.59% 189
Bulgaria NREN 6802 54.36% 192
CEDIA 27841 50.32% 196
CESCA 13041 0.26% 197
CICA/Junta de Andalucía 198096 50.05% 85
CZ.NIC 25192 47.13% 204
Choopa, LLC 20473 0.63% 207
Claranet 8426 1.60% 209
CloudFlare, Inc. 13335 4.09% 211
Core-Backbone GmbH 33891 0.19% 216
Critical Colocation 52342 46.76% 217
Custodian Data Centre 50300 0.18% 218
Cybera Inc 15296 2.55% 219
DTS 24183 0.81% 222
DataChambers 29765 1.39% 223
Defense Research and Engineering Network 668 10.05% 79
Dhiraagu 7642 0.23% 227
DirectVPS 29028 99.07% 230
DreamHost 26347 30.22% 133
Duocast BV 31477 1.47% 232
E-Werk Wels AG - it&tel 21013 0.16% 233
EGATE Networks Inc. 13657 0.53% 235
ENTANET International Ltd. 8468 0.71% 236
Ehiweb.it 43989 8.39% 238
Exponential-e 25180 4.28% 247
FX Networks 9503 0.23% 249
FidoNet 8282 6.80% 252
FirstDigital Telecom 13415 0.38% 253
Fluidata 39545 50.02% 256
FranTech Solutions 53667 6.70% 257
Free University of Bozen-Bolzano 51708 68.71% 120
Fundacao Parque Tecnologico Itaipu - Brasil 263083 86.81% 110
Georgia Institute of Technology 2637 1.07% 262
Georgian College of AA&T 19764 0.18% 263
Go6 Institute 198644 71.32% 265
Gustavus Adolphus College 17234 78.18% 268
HEAnet 1213 2.82% 93
Honesty Net Solutions (I) Pvt Ltd 38457 3.14% 270
ICT Valle Umbra 15605 0.37% 275
IKS GmbH 15725 2.73% 132
ITsjefen AS 44381 53.09% 278
JT 8681 1.37% 287
Jaguar Network 30781 2.31% 288
Jolokia Networks? 12182 0.32% 290
LGA Telecom Pte Ltd 10024 0.28% 296
Layer42 Networks 8121 7.61% 302
Louisiana Optical Network Initiative 32440 1.35% 305
MERLIN 16796 0.30% 310
MaineREN - University of Maine System 557 0.55% 313
Makonix 52173 12.72% 315
Marist College 6124 80.42% 124
Miconet Sp. z o.o. 35007 0.42% 320
NAITWAYS 57119 2.36% 325
NETHINKS GmbH 8319 0.43% 326
NETIS TELECOM 25592 13.81% 327
NYI 11403 0.24% 331
NYSERNet 3754, 3756 99.02% 332
National Informatics Centre 4758 0.73% 121
Neo Telecoms 8218 13.75% 105
Neology 37105 3.60% 337
NetAssist 29632 23.94% 339
NetNam Corporation 24173 0.54% 340
Netwerkvereniging Coloclue 8283 32.19% 342
NineWire Pty LTd 132020 99.73% 344
Opensvit - PEF Fenix VT 39399 1.53% 353
Oxilion B.V. 48539 9.80% 359
PCextreme B.V. 48635 3.16% 361
PREGINET 9821 50.38% 362
PT Pasifik Satelit Nusantara 9875 0.15% 365
PoP-RS 2716 7.25% 96
PoP-SP RNP 1916 0.25% 115
Ponto de Presença da RNP na Bahia 53164 51.24% 374
Portal Itaipu 262841 0.29% 375
Protel i-Next 16531 0.20% 378
RAU - UdelaR 1797 50.60% 385
RENATER 2200 7.13% 59
Red Académica de Centros de Investigación y Universidades Nacionales REACCIUN 20312, 27807 23.65% 388
Redstone 5552 0.25% 390
Region 7 ESC 30350 51.16% 391
SAI 18931 0.67% 395
SARENET 3262 3.08% 396
SJM Steffann 57771 45.84% 398
SPAWAR 22 41.82% 64
SURFnet 1103 2.62% 84
Safaricom Ltd 37061 0.16% 400
Saturn-Internet, ISP 31692 2.77% 402
Sauk Valley Community College 13953 48.88% 403
Sempernet 45444 76.68% 406
Sify Technologies Limited 9583 0.21% 409
Signet B.V. 28878 0.76% 410
Sistemas Fratec S.A. 262149 12.48% 414
Spectrum Networks 11404 4.82% 426
SpeedPartner GmbH 34225 97.78% 427
SteepHost DC-UA 47142 5.19% 429
SupraNet Communications, Inc 4150 0.29% 433
TB Telecom Sp. z o.o. 51155 1.94% 434
TOP-IX Consortium 25309 80.14% 436
TeliaSonera International Carrier 1299 1.18% 442
Telvent Global Services 15734 0.19% 443
ThaiSarn 3836 45.71% 445
The Kansas Research and Education Network 2495 0.20% 446
The Tertiary Education and Research Network of South Africa (TENET) 2018 3.00% 112
Trunk Networks Limited 49375 51.65% 451
UNAM 278 0.38% 457
US Dept of Transportation 2576 0.99% 459
UniNet 4621 17.64% 462
Universidad Panamericana 13679 82.82% 117
University Of Lampung 56237 0.35% 465
University of New Hampshire 11745 50.94% 467
University of Vermont 1351 65.42% 109
Utility Line Italia srl 9026 47.84% 469
Vmax Net Telecomunicacoes do Brasil 28277 0.54% 479
WINTECH Communications, Inc. 17683 0.40% 484
Xente 57309 50.54% 490
Zimcom Internet Solutions, Inc 30059 3.98% 495
domainfactory GmbH 34011 0.14% 498
filoo GmbH 47215 2.16% 500
iNES Group 12310 0.32% 502
internet4YOU GmbH & Co. KG 29014 3.83% 503
interscholz Internet Services GmbH & Co. KG 33843 72.18% 504
iway AG 8758 5.10% 505
kwaoo.com 24904 1.76% 506
manitu GmbH 34240 4.80% 507
mc.net 6479 28.36% 508
next layer Telekommunikationsdienstleistungs- und BeratungsGmbH 1764 0.50% 510
prgmr.com 47066 14.73% 512


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.