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 April 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 26.36% 1
ATT 6389, 7018, 7132 17.88% 2
KDDI 2516 11.41% 3
Verizon Wireless 6167, 22394 48.71% 4
Free 12322 37.52% 5
Time Warner Cable 7843, 10796, 11351, 11426, 11427, 12271, 20001 7.31% 6
Deutsche Telekom AG 3320 19.76% 7
RCS & RDS 8708 24.86% 9
Telenet 6848 30.67% 8
Liberty Global 5089, 6830, 20825, 29562 3.07% 10
Telefonica del Peru 6147 7.58% 11
SoftBank BB 17676 3.24% 13
Chubu Telecommunications 18126 26.70% 14
Swisscom 3303 24.54% 12
Hughes Network Systems 6621 27.00% 15
T-Mobile USA 21928 22.18% 16
Belgacom 5432 8.43% 17
Opera Software ASA 39832 18.01% 18
VOO 12392 24.91% 19
StarHub 4657, 55430 18.43% 21
XS4ALL 3265 21.55% 20
Forthnet 1241 4.40% 23
Google Fiber 16591 76.52% 22
China Telecom 4134, 4809 0.18% 24
Internode 4739 13.98% 25
M1 Limited 4773, 17547 7.43% 28
its communications Inc.(iTSCOM) 9365 3.44% 30
EPT Luxembourg 6661 25.08% 31
OTE SA 6799 0.88% 32
MediaCat Div./Community Netowork Center Inc. 17529 8.19% 39
Janet 786 3.08% 27
CESNET 2852 9.74% 33
Indiana University 87 17.98% 26
OVH 16276 12.35% 45
BelWue 553 6.92% 49
Virginia Tech 1312 60.72% 34
University of Minnesota 57, 217 42.76% 35
Nettel Telecomunicações Ltda 53135 10.35% 57
University of Pennsylvania 55 49.15% 43
Belnet 2611 8.04% 50
ARNES 2107 36.48% 40
Leibniz Supercomputing Centre 12816 30.63% 44
NIIF/Hungarnet 1955 17.26% 48
LITNET 2847 20.97% 55
FCCN 1930 24.11% 41
UNINETT 224 30.57% 47
SWITCH 559 8.01% 37
inexio KGaA 42652 5.37% 70
Rensselaer Polytechnic Institute 91 43.63% 58
University of South Florida 5661 50.18% 53
Louisiana State University 2055 71.62% 38
AAISP 20712 24.26% 73
University of Iowa 3676 46.18% 54
Xfone 018 47956 5.78% 77
Monash University 56132 7.91% 56
TUBITAK ULAKBIM / ULAKNET 8517 3.33% 46
Tulane University 10349 30.70% 60
Altibox AS 29695 1.14% 85
University of Vermont 1351 57.09% 62
Telenor Nordic 2119 0.13% 89
Cisco 109 13.72% 29
Gustavus Adolphus College 17234 77.48% 74
green.ch AG 1836 4.36% 84
Marist College 6124 54.82% 69
Jiří štrohalm 197307 53.00% 92
RENATER 2200 4.44% 51
Solcon 12414 4.78% 86
University of Wisconsin - Madison 59 5.82% 63
CJSC Progressive Technologies 35475 6.38% 99
RedIRIS 766 6.26% 42
LENTEL 44030 32.65% 113
Init7 13030 15.96% 101
AMRES - Serbian National Research and Education Network 13092 33.52% 61
Funet 1741 15.26% 71
Hurricane Electric 6939 11.41% 102
Storm Internet 13319 7.60% 106
GARR 137 1.04% 68
UNESP 53166 29.16% 59
DegNet GmbH 20902 52.25% 111
Kasetsart University 9411 39.05% 66
Starlink 34602 1.24% 108
NTT Communications 2914 0.61% 52
GlobalConnect 42525 1.60% 119
NetAssist 29632 14.48% 114
SoftLayer Technologies 36351 0.80% 81
guifi.net 49835 37.76% 121
PT Cyberindo Aditama (CBN Internet) 4787 1.92% 112
HEAnet 1213 3.01% 76
SuperCSI 2506 3.74% 90
Karlsruhe Institute of Technology (KIT) 34878 46.23% 83
Free University of Bozen-Bolzano 51708 69.64% 98
Voxel / Internap 29791 0.24% 125
RESTENA 2602 6.54% 380
edpnet 9031 1.72% 134
Host Virtual, Inc 36236 20.88% 117
FasterNet Internet Service Provider 28580 0.30% 249
Opensvit - PEF Fenix VT 39399 1.71% 348
ETB SA ESP 19429 0.16% 120
IPTRON.NET 12757 84.76% 155
ADDIX Internet Services 25415 2.14% 156
AMS-IX 1200 31.93% 158
ASDASD srl / POPWIFI 28929 1.19% 159
ATM S.A. 15694 0.31% 126
Academia Sinica Network 9264 22.69% 109
Airsat 28026 0.52% 166
Alhambra Eidos 15450 50.29% 168
Alog Data Centers do Brasil 16397, 26592 0.56% 133
Association tetaneutral.net 197422 59.94% 172
Atlas Networks 21743 1.42% 173
Australian Academic and Research Network (AARNet) 7575 2.95% 75
BIT BV 12859 2.38% 175
BSO Network Solutions 31216 0.42% 176
Bangalore Broadband Network Pvt Ltd 55947 1.78% 180
Black Lotus Communications 32421 1.47% 184
Bogons Ltd 3213 0.83% 189
Bulgaria NREN 6802 54.40% 127
CESCA 13041 0.79% 196
CICA/Junta de Andalucía 198096 50.03% 80
CZ.NIC 25192 53.65% 203
Choopa, LLC 20473 0.41% 206
Claranet 8426 0.30% 130
CloudFlare, Inc. 13335 3.81% 209
Conexim Australia Pty Ltd 37996 31.07% 212
Core-Backbone GmbH 33891 0.30% 214
Critical Colocation 52342 71.70% 215
Cybera Inc 15296 0.31% 217
DMZGlobal 17649 29.06% 105
DTS 24183 0.74% 220
DataChambers 29765 1.70% 221
Defense Research and Engineering Network 668 5.62% 72
Dhiraagu 7642 0.18% 224
DirectVPS 29028 78.92% 227
DreamHost 26347 30.41% 229
Duocast BV 31477 3.57% 230
E-Werk Wels AG - it&tel 21013 0.10% 231
EGATE Networks Inc. 13657 0.81% 233
ENTANET International Ltd. 8468 0.20% 234
ERNET India 2697 0.46% 235
Ehiweb.it 43989 4.58% 236
Etop sp. z o.o. / DataHouse.Pl 20853 0.11% 242
Exponential-e 25180 1.94% 245
FT / DECEx 28301 50.83% 246
FX Networks 9503 0.25% 247
FidoNet 8282 2.27% 251
FirstDigital Telecom 13415 0.27% 252
Fluidata 39545 50.05% 255
FranTech Solutions 53667 5.31% 256
Fundacao Parque Tecnologico Itaipu - Brasil 263083 87.10% 97
GITN Sdn Berhad 38044 2.83% 79
Georgia Institute of Technology 2637 0.73% 261
Georgian College of AA&T 19764 0.40% 262
Greek Research & Technology Network 5408 34.97% 88
Honesty Net Solutions (I) Pvt Ltd 38457 10.33% 268
Host.MD 28990 7.60% 269
Hostemo Technology Sdn Bhd 55799 0.53% 271
IKS GmbH 15725 2.51% 275
ISNET 9021 0.81% 276
JT 8681 0.14% 286
Jaguar Network 30781 2.96% 287
LGA Telecom Pte Ltd 10024 0.40% 294
Layer42 Networks 8121 1.36% 300
LeaseWeb BV 16265 0.67% 129
Login, Inc. Tucson Colocation VoIP and Data 22772 0.15% 302
Louisiana Optical Network Initiative 32440 2.35% 303
MERLIN 16796 0.13% 308
MaineREN - University of Maine System 557 0.76% 310
Makonix 52173 17.93% 312
Maxiweb Internet Provider 28140 50.22% 313
NAITWAYS 57119 2.39% 321
NETIS TELECOM 25592 3.31% 323
NFSI Telecom Lda 25137 1.86% 324
NYI 11403 0.18% 327
NYSERNet 3754, 3756 99.93% 328
National Informatics Centre 4758 1.77% 123
NedZone Internet BV 25459 1.09% 331
Neo Telecoms 8218 21.36% 104
Netnod 8674 65.49% 336
Netwerkvereniging Coloclue 8283 0.49% 337
Oxilion B.V. 48539 0.14% 354
PCextreme B.V. 48635 2.42% 356
PREGINET 9821 50.35% 357
PT. Wifian Solution 58485 46.18% 364
PT.MEDIA SARANA DATA(GMEDIA) 55666 0.14% 365
PoP-RS 2716 2.71% 94
PoP-SP RNP 1916 0.36% 103
Ponto de Presença da RNP na Bahia 53164 50.91% 369
Portal Itaipu 262841 0.61% 370
PowerTech Information Systems AS 5381 3.90% 124
RAU - UdelaR 1797 50.73% 379
Red Académica de Centros de Investigación y Universidades Nacionales REACCIUN 20312, 27807 17.38% 383
Redstone 5552 1.82% 385
Remex Consulting Pty Limited 55328 79.26% 387
SAI 18931 0.74% 390
SARENET 3262 7.71% 391
SMELLY BLACK DOG 56129 20.26% 394
SPAWAR 22 43.35% 65
SURFnet 1103 2.32% 78
Safaricom Ltd 37061 0.11% 395
Saturn-Internet, ISP 31692 0.79% 397
Sauk Valley Community College 13953 48.59% 131
Sempernet 45444 77.31% 400
Sify Technologies Limited 9583 0.14% 403
Signet B.V. 28878 0.30% 404
Sistemas Fratec S.A. 262149 10.19% 408
Sparkation Pte Ltd 45634 0.43% 419
Spectrum Networks 11404 10.10% 420
SpeedPartner GmbH 34225 86.16% 421
SuperInternet Access Pte Ltd 4844 50.97% 425
SupraNet Communications, Inc 4150 0.44% 426
TB Telecom Sp. z o.o. 51155 1.48% 427
TOP-IX Consortium 25309 87.68% 429
Tanzania Network Information Center 37045 57.90% 432
TeliaSonera International Carrier 1299 0.70% 435
ThaiSarn 3836 72.21% 438
The Kansas Research and Education Network 2495 0.94% 439
The Tertiary Education and Research Network of South Africa (TENET) 2018 4.50% 118
Trunk Networks Limited 49375 51.47% 444
UFSC - Universidade Federal de Santa Catarina - Brazil 11242 16.16% 448
UFSCar 52888 16.28% 95
UNAM 278 0.45% 449
US Dept of Transportation 2576 5.08% 451
UniNet 4621 4.62% 116
Universidad Panamericana 13679 86.21% 91
University Of Lampung 56237 6.66% 456
University of California, San Diego 7377 5.84% 96
University of New Hampshire 11745 50.61% 122
Utility Line Italia srl 9026 52.01% 459
Vip mobile d.o.o. 44143 0.17% 466
Vmax Net Telecomunicacoes do Brasil 28277 0.95% 469
WINTECH Communications, Inc. 17683 0.41% 473
Zimcom Internet Solutions, Inc 30059 1.61% 484
domainfactory GmbH 34011 0.16% 487
filoo GmbH 47215 2.93% 489
iNES Group 12310 0.59% 491
internet4YOU GmbH & Co. KG 29014 2.35% 492
interscholz Internet Services GmbH & Co. KG 33843 50.38% 493
iway AG 8758 5.21% 494
kwaoo.com 24904 2.87% 495
manitu GmbH 34240 5.63% 496
mc.net 6479 17.10% 497
next layer Telekommunikationsdienstleistungs- und BeratungsGmbH 1764 0.73% 499
prgmr.com 47066 21.63% 501


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.