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, 13th August 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 30.49% 1
ATT 6389, 7018, 7132 22.79% 2
KDDI 2516 13.09% 3
Verizon Wireless 6167, 22394 54.55% 4
Time Warner Cable 7843, 10796, 11351, 11426, 11427, 12271, 20001 9.07% 6
Deutsche Telekom AG 3320 26.11% 5
Free 12322 38.82% 7
Telenet 6848 33.72% 8
Telefonica del Peru 6147 8.89% 9
Liberty Global 5089, 6830, 20825, 29562 3.53% 10
Chubu Telecommunications 18126 31.83% 16
SoftBank BB 17676 3.64% 15
RCS & RDS 8708 24.55% 11
Swisscom 3303 27.22% 12
T-Mobile USA 21928 37.75% 13
VOO 12392 54.73% 14
Belgacom 5432 12.02% 17
Telekom Malaysia 4788 5.34% 19
Hughes Network Systems 6621 24.69% 20
Telefonica Czech Republic 5610 14.33% 18
XS4ALL 3265 34.65% 22
StarHub 4657, 55430 10.84% 25
Opera Software ASA 39832 10.03% 24
OTE SA 6799 4.72% 21
Orange Poland 5617, 43447 0.73% 26
Google Fiber 16591 71.33% 27
Forthnet 1241 5.88% 23
Get AS, Norway 25400, 41164, 47853, 49455, 51135 20.36% 28
its communications Inc.(iTSCOM) 9365 3.63% 45
Internode 4739 4.50% 32
BH Telecom d.d. Sarajevo 9146 5.42% 31
OVH 16276 16.78% 33
M1 Limited 4773, 17547 3.34% 36
CORPORACION NACIONAL DE TELECOMUNICACIONES 14420, 27757, 27948, 27968 2.58% 34
MediaCat Div./Community Netowork Center Inc. 17529 9.33% 44
EPT Luxembourg 6661 30.77% 37
Chunghwa Telecom (HiNet) 3462, 9680, 17419 0.16% 29
Cisco 109 35.95% 30
Janet 786 3.99% 38
Hurricane Electric 6939 13.18% 78
inexio KGaA 42652 18.52% 55
Telenor Nordic 2119 1.27% 35
Kasetsart University 9411 43.80% 57
Nettel Telecomunicações Ltda 53135 5.03% 70
BelWue 553 6.16% 60
Xfone 018 47956 6.79% 67
Bangalore Broadband Network Pvt Ltd 55947 10.24% 69
Belnet 2611 11.55% 48
T-Mobile Czech Republic, a.s. 13036 1.25% 61
Centurylink 209 0.13% 68
Leibniz Supercomputing Centre 12816 27.13% 56
SWITCH 559 8.31% 51
CESNET 2852 8.97% 52
University of Pennsylvania 55 61.79% 39
Indiana University 87 17.94% 40
Monash University 56132 9.35% 42
China Telecom 4134, 4809 0.13% 82
University of Minnesota 57, 217 46.25% 43
AAISP 20712 26.85% 79
kwaoo.com 24904 38.96% 132
UNINETT 224 30.72% 49
Altibox AS 29695 1.67% 77
green.ch AG 1836 6.86% 94
Solcon 12414 5.85% 84
Virginia Tech 1312 64.11% 41
Starlink 34602 2.60% 91
FasterNet Internet Service Provider 28580 0.57% 269
Louisiana State University 2055 71.54% 47
ARNES 2107 20.26% 53
Jiří štrohalm 197307 54.52% 87
CJSC Progressive Technologies 35475 8.16% 99
GlobalConnect 42525 1.61% 114
TUBITAK ULAKBIM / ULAKNET 8517 2.11% 59
University of Iowa 3676 47.33% 62
LENTEL 44030 27.16% 102
Funet 1741 13.16% 83
Init7 13030 5.24% 110
NIIF/Hungarnet 1955 9.80% 80
TekSavvy Solutions 5645 0.13% 113
DegNet GmbH 20902 49.51% 117
PT Cyberindo Aditama (CBN Internet) 4787 1.81% 100
LeaseWeb BV 16265 0.52% 116
SoftLayer Technologies 36351 0.93% 130
SuperCSI 2506 3.40% 122
guifi.net 49835 37.25% 145
Host Virtual, Inc 36236 11.37% 157
Storm Internet 13319 5.30% 118
University of South Florida 5661 54.95% 50
GITN Sdn Berhad 38044 2.14% 98
Honesty Net Solutions (I) Pvt Ltd 38457 1.22% 133
LITNET 2847 16.21% 72
FCCN 1930 21.29% 66
AMRES - Serbian National Research and Education Network 13092 30.28% 73
UNESP 53166 20.05% 64
Television Costa Blanca SL 199952 21.64% 127
Rensselaer Polytechnic Institute 91 46.05% 63
Karlsruhe Institute of Technology (KIT) 34878 45.25% 103
Tulane University 10349 19.65% 86
Australian Academic and Research Network (AARNet) 7575 1.18% 71
UFSCar 52888 26.63% 85
Dhiraagu 7642 0.28% 150
Greek Student Network 197121 0.87% 97
University of California, San Diego 7377 13.05% 75
PowerTech Information Systems AS 5381 5.35% 119
RESTENA 2602 7.86% 160
RedIRIS 766 2.31% 89
University of Wisconsin - Madison 59 6.87% 90
Tele2 AB 1257 0.46% 54
ADDIX Internet Services 25415 1.44% 179
AMS-IX 1200 43.86% 181
ASDASD srl / POPWIFI 28929 0.40% 182
ATM S.A. 15694 0.17% 141
Academia Sinica Network 9264 17.42% 115
Airsat 28026 0.40% 189
Alhambra Eidos 15450 50.58% 191
Alog Data Centers do Brasil 16397, 26592 0.82% 143
Association tetaneutral.net 197422 61.76% 195
Atlas Networks 21743 0.61% 196
BIT BV 12859 2.84% 198
BSO Network Solutions 31216 0.51% 199
Black Lotus Communications 32421 1.02% 206
Bogons Ltd 3213 0.77% 211
Bulgaria NREN 6802 55.05% 151
CEDIA 27841 50.40% 216
CESCA 13041 0.15% 217
CICA/Junta de Andalucía 198096 50.13% 134
CZ.NIC 25192 69.73% 224
Choopa, LLC 20473 0.32% 227
Claranet 8426 0.38% 148
CloudFlare, Inc. 13335 2.15% 230
Cooperativa Telefónica de Villa Gdor. Galvez Ltda. 11815 0.18% 234
Core-Backbone GmbH 33891 0.23% 235
Critical Colocation 52342 41.84% 236
Custodian Data Centre 50300 0.14% 237
Cybera Inc 15296 0.35% 238
DMZGlobal 17649 8.06% 125
DTS 24183 1.94% 241
DataChambers 29765 2.57% 242
Defense Research and Engineering Network 668 9.58% 95
DirectVPS 29028 83.46% 248
DreamHost 26347 34.21% 250
Duocast BV 31477 1.44% 251
EGATE Networks Inc. 13657 0.54% 254
ENTANET International Ltd. 8468 0.36% 255
Ehiweb.it 43989 6.43% 257
Exa Networks Limited 30740 50.03% 263
Excellent Hosting Sweden AB 50986 2.81% 264
Exponential-e 25180 2.36% 265
FX Networks 9503 0.32% 267
FidoNet 8282 4.75% 271
FirstDigital Telecom 13415 0.31% 272
Fluidata 39545 41.11% 275
FranTech Solutions 53667 0.65% 276
Free University of Bozen-Bolzano 51708 58.23% 144
Fundacao Parque Tecnologico Itaipu - Brasil 263083 87.55% 104
GARR 137 0.91% 88
Georgia Institute of Technology 2637 2.51% 149
Go6 Institute 198644 69.26% 283
Greek Research & Technology Network 5408 21.70% 105
Gustavus Adolphus College 17234 87.11% 128
HEAnet 1213 2.33% 111
IKS GmbH 15725 2.28% 152
IP-Max SA 25091 14.57% 294
JT 8681 1.02% 304
Jaguar Network 30781 4.21% 305
Jolokia Networks? 12182 1.00% 307
LGA Telecom Pte Ltd 10024 0.30% 313
Layer42 Networks 8121 8.47% 319
Louisiana Optical Network Initiative 32440 1.33% 140
MERLIN 16796 0.17% 326
MaineREN - University of Maine System 557 0.72% 329
Makonix 52173 1.80% 331
Marist College 6124 74.30% 123
Maxiweb Internet Provider 28140 11.69% 333
NETHINKS GmbH 8319 0.45% 342
NETIS TELECOM 25592 1.25% 343
NYI 11403 0.52% 347
NYSERNet 3754, 3756 98.07% 348
National Informatics Centre 4758 0.36% 349
NedZone Internet BV 25459 0.61% 352
Neo Telecoms 8218 12.59% 129
Neology 37105 2.85% 354
NetAssist 29632 18.61% 356
NetNam Corporation 24173 0.26% 357
Netnod 8674 86.02% 358
Netwerkvereniging Coloclue 8283 2.65% 359
NineWire Pty LTd 132020 99.92% 361
Opensvit - PEF Fenix VT 39399 2.33% 370
Oxilion B.V. 48539 5.93% 376
PCextreme B.V. 48635 7.45% 378
PREGINET 9821 50.21% 379
PT Melvar Lintasnusa 9657 0.23% 381
PT Pasifik Satelit Nusantara 9875 0.11% 383
PT. Wifian Solution 58485 2.09% 387
PoP-RS 2716 4.70% 96
PoP-SP RNP 1916 0.38% 121
Ponto de Presença da RNP na Bahia 53164 51.10% 142
Portal Itaipu 262841 0.46% 392
RAU - UdelaR 1797 51.63% 402
RENATER 2200 6.36% 74
Red Académica de Centros de Investigación y Universidades Nacionales REACCIUN 20312, 27807 14.19% 405
Redstone 5552 0.68% 407
Remex Consulting Pty Limited 55328 77.95% 409
SAI 18931 0.80% 412
SARENET 3262 20.31% 413
SIDN 1140 65.01% 414
SPAWAR 22 43.58% 76
SURFnet 1103 2.24% 93
Safaricom Ltd 37061 0.13% 417
Saturn-Internet, ISP 31692 2.24% 419
Sauk Valley Community College 13953 44.52% 420
Shelby Broadband 18786 1.81% 426
Sify Technologies Limited 9583 0.12% 427
Signet B.V. 28878 0.64% 428
Sistemas Fratec S.A. 262149 6.94% 432
Spectrum Networks 11404 3.56% 444
SpeedPartner GmbH 34225 97.56% 445
SteepHost DC-UA 47142 3.79% 447
TOP-IX Consortium 25309 74.91% 454
TeliaSonera International Carrier 1299 1.21% 147
ThaiSarn 3836 31.44% 462
The Tertiary Education and Research Network of South Africa (TENET) 2018 5.61% 131
Trunk Networks Limited 49375 51.34% 468
U.S. Department of Education 10442 65.21% 126
UNAM 278 0.65% 138
US Dept of Transportation 2576 11.04% 474
Unetvale 53175 0.32% 476
UniNet 4621 16.88% 106
Universidad Panamericana 13679 86.89% 101
University of New Hampshire 11745 50.66% 481
University of Vermont 1351 77.25% 65
Utility Line Italia srl 9026 28.10% 483
Vip mobile d.o.o. 44143 0.18% 490
Vmax Net Telecomunicacoes do Brasil 28277 0.98% 493
WINTECH Communications, Inc. 17683 0.26% 498
Xente 57309 50.47% 504
Zimcom Internet Solutions, Inc 30059 4.06% 509
Zvezda Telecom 21367 50.07% 510
domainfactory GmbH 34011 0.59% 512
edpnet 9031 2.96% 136
iNES Group 12310 0.46% 516
interscholz Internet Services GmbH & Co. KG 33843 64.59% 518
iway AG 8758 4.60% 519
manitu GmbH 34240 9.52% 520
mc.net 6479 22.65% 521
next layer Telekommunikationsdienstleistungs- und BeratungsGmbH 1764 0.95% 156
ninux.org 197835 89.13% 523
prgmr.com 47066 12.56% 524


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.