This page is updated daily by a script. The data below was acquired starting at Tue Feb 20 00:00:02 2018 UTC.

This page shows the IPv6 capability status for the top 500 websites according to MOZ.COM.

The data is gathered by first screen-scraping the 500 web sites from MOZ.COM . The site names are then checked for AAAA records via the raw name and also www.. For sites which have an AAAA record, a further test is done to see if a web server answers at that name using LWP from an IPv6 source address.

Each column is tallied and totals (and percentages) are shown at the bottom of the table.

This site used to use the Alexa 500, but after Alexa was acquired by Amazon, Amazon placed Alexa beyond 50 behind a paywall with a price for each URL retrieved. This page is generated daily and the price for 500 URLs was $125. I wasn't willing to pay $125/day to maintain the list, so I now use the free data from moz.com.

Unfortunately, the moz.com list is semi-static because automated retrieval from openssl or LWP is not possible using the versions of those tools currently installed. As a result, I've downloaded the CSV version from their site once and will try to remember to update it periodically. I apologize for any inconvenience. If anyone has an Alexa/AWS contact that might be friendly to continuing this project without requiring a $125/day investment, please contact me.

Update:

A friend who works at Amazon reached out and it looks like Amazon might be willing to donate access to the data for this purpose (with an NDA to prevent me from passing the data along). Check this space for further updates as things progress.
Rank Web Site AAAA AAAA for www. Site answers IPv6 www. Site answers IPv6
1 facebook.com     200 200
2 twitter.com    
3 google.com     200 200
4 youtube.com     200 200
5 linkedin.com     200 200
6 wordpress.org    
7 instagram.com     200 200
8 pinterest.com    
9 wikipedia.org     200 200
10 wordpress.com    
11 blogspot.com     200 200
12 apple.com     200
13 adobe.com     200
14 tumblr.com    
15 youtu.be     200
16 amazon.com    
17 vimeo.com    
18 goo.gl     200 400 Bad Request
19 yahoo.com     200 200
20 microsoft.com     200
21 flickr.com     200
22 qq.com     200
23 bit.ly    
24 godaddy.com    
25 vk.com    
26 whoisprivacyprotect.com    
27 buydomains.com    
28 reddit.com    
29 baidu.com    
30 w3.org    
31 nytimes.com    
32 t.co    
33 europa.eu     200 200
34 statcounter.com    
35 weebly.com    
36 gov.uk    
37 bbc.co.uk     301
38 yandex.ru     200 200
39 myspace.com    
40 blogger.com     200 200
41 soundcloud.com    
42 mozilla.org     200
43 google.de     200 200
44 github.com    
45 miitbeian.gov.cn    
46 cnn.com     200 200
47 wix.com    
48 addthis.com    
49 ascii.co.uk    
50 wp.com    
51 jimdo.com    
52 google.co.jp     200 200
53 creativecommons.org     403 Forbidden 403 Forbidden
54 nih.gov     301
55 issuu.com    
56 huffingtonpost.com     200
57 paypal.com    
58 cloudflare.com     200 200
59 123-reg.co.uk    
60 feedburner.com     200 200
61 bluehost.com    
62 digg.com    
63 wixsite.com    
64 stumbleupon.com    
65 theguardian.com    
66 imdb.com    
67 go.com    
68 tinyurl.com     200 200
69 yelp.com    
70 forbes.com    
71 dropbox.com     200 200
72 parallels.com    
73 miibeian.gov.cn    
74 msn.com    
75 google.co.uk     200 200
76 amazonaws.com    
77 wsj.com     200
78 gravatar.com    
79 washingtonpost.com    
80 slideshare.net     200 200
81 addtoany.com     200 200
82 etsy.com    
83 e-recht24.de    
84 weibo.com    
85 archive.org    
86 eventbrite.com    
87 free.fr     200 200
88 fc2.com    
89 ameblo.jp    
90 telegraph.co.uk    
91 sourceforge.net    
92 livejournal.com    
93 51.la    
94 bing.com    
95 ebay.com    
96 mail.ru     200
97 reuters.com    
98 amazon.co.uk    
99 typepad.com    
100 about.com    
101 taobao.com    
102 bloomberg.com    
103 dailymail.co.uk    
104 yahoo.co.jp    
105 aol.com     200
106 macromedia.com     200
107 sina.com.cn    
108 usatoday.com    
109 wikimedia.org     200 200
110 amazon.de    
111 time.com     200 200
112 eepurl.com    
113 constantcontact.com    
114 cdc.gov     200
115 webs.com     403 Forbidden 403 Forbidden
116 harvard.edu    
117 namejet.com    
118 live.com     200
119 xing.com    
120 amzn.to    
121 latimes.com    
122 npr.org     200
123 opera.com    
124 dailymotion.com    
125 blogspot.co.uk     200 404 Not Found
126 cpanel.net    
127 google.it     200 200
128 bbb.org    
129 icio.us    
130 tripadvisor.com    
131 hatena.ne.jp    
132 list-manage.com    
133 guardian.co.uk    
134 mit.edu     200 200
135 surveymonkey.com    
136 rambler.ru    
137 elegantthemes.com    
138 bandcamp.com    
139 cpanel.com    
140 amazon.co.jp    
141 doubleclick.net     200 200
142 gnu.org     200
143 apache.org    
144 google.fr     200 200
145 stanford.edu     302
146 domainactive.co    
147 businessinsider.com    
148 joomla.org    
149 wired.com    
150 kickstarter.com    
151 bbc.com     301
152 geocities.com    
153 nasa.gov     200 200
154 google.es     200 200
155 behance.net    
156 independent.co.uk    
157 medium.com     403 Forbidden 403 Forbidden
158 cnet.com    
159 tripod.com    
160 delicious.com    
161 ted.com    
162 photobucket.com    
163 googleusercontent.com     404 Not Found
164 scribd.com    
165 imgur.com    
166 163.com    
167 disqus.com    
168 secureserver.net    
169 deviantart.com    
170 beian.gov.cn    
171 github.io     301
172 google.ca     200 200
173 rakuten.co.jp    
174 goodreads.com    
175 ca.gov    
176 homestead.com    
177 spotify.com    
178 un.org    
179 who.int    
180 pbs.org    
181 nationalgeographic.com    
182 vkontakte.ru    
183 wiley.com    
184 barnesandnoble.com    
185 cbsnews.com    
186 ibm.com     200
187 nbcnews.com    
188 buzzfeed.com    
189 berkeley.edu     200
190 foxnews.com     200
191 mashable.com    
192 sohu.com    
193 theatlantic.com    
194 blogspot.com.es     404 Not Found 404 Not Found
195 sakura.ne.jp    
196 whitehouse.gov     301 301
197 nature.com    
198 techcrunch.com    
199 webmd.com    
200 1und1.de     200 200
201 hostnet.nl    
202 usda.gov     200
203 themeforest.net    
204 one.com    
205 cornell.edu    
206 trustpilot.com    
207 jiathis.com    
208 squarespace.com    
209 php.net     200
210 sciencedirect.com    
211 4.cn    
212 change.org    
213 blogspot.de     200 404 Not Found
214 blogspot.ca     200 404 Not Found
215 epa.gov     200 200
216 noaa.gov     200 200
217 line.me    
218 cbc.ca    
219 directdomains.com    
220 ow.ly    
221 ft.com    
222 meetup.com    
223 networksolutions.com    
224 wp.me    
225 nps.gov     302 200
226 mapquest.com    
227 technorati.com    
228 springer.com    
229 skype.com    
230 wikia.com     200 200
231 a8.net    
232 loc.gov     403 Forbidden
233 usnews.com    
234 booking.com    
235 ning.com    
236 economist.com    
237 sfgate.com    
238 cbslocal.com    
239 bizjournals.com    
240 spiegel.de    
241 foursquare.com    
242 cloudfront.net    
243 blogspot.fr     200 404 Not Found
244 phoca.cz    
245 xinhuanet.com    
246 google.nl     200 200
247 fda.gov     403 Forbidden
248 wufoo.com    
249 acquirethisname.com    
250 detik.com    
251 engadget.com    
252 list-manage1.com    
253 domainname.de    
254 abc.net.au    
255 chicagotribune.com    
256 cnbc.com    
257 phpbb.com    
258 gizmodo.com    
259 myshopify.com    
260 prnewswire.com    
261 getpocket.com    
262 irs.gov     200
263 geocities.jp    
264 slate.com    
265 hp.com    
266 newyorker.com    
267 bigcartel.com     301
268 ovh.com    
269 nhs.uk    
270 google.com.au     200 200
271 nifty.com    
272 about.me    
273 nydailynews.com    
274 naver.com    
275 marriott.com    
276 histats.com    
277 umich.edu    
278 storify.com    
279 mijndomein.nl     301
280 livedoor.jp    
281 fortune.com     200 200
282 bestfwdservice.com    
283 ed.gov     301 301
284 state.gov     500 Can't connect to state.gov:80 (No route to host) 200
285 clickbank.net    
286 umblr.com    
287 youku.com    
288 enable-javascript.com    
289 loopia.se    
290 uol.com.br     200 200
291 house.gov    
292 visma.com    
293 loopia.com    
294 weather.com    
295 unesco.org    
296 vice.com    
297 indiegogo.com    
298 ocn.ne.jp     200
299 businessweek.com    
300 google.com.br     200 200
301 yale.edu     403 Forbidden 403 Forbidden
302 indiatimes.com     200
303 columbia.edu    
304 axs.com    
305 ustream.tv    
306 hilton.com     301
307 sogou.com    
308 rs6.net    
309 examiner.com    
310 wunderground.com    
311 marketwatch.com     301
312 fb.com     200 200
313 fb.me     200 200
314 dribbble.com    
315 linksynergy.com    
316 upenn.edu    
317 biglobe.ne.jp     200 200
318 doi.org     200 200
319 washington.edu    
320 sciencedaily.com    
321 smh.com.au     301
322 boston.com    
323 samsung.com    
324 android.com     200 200
325 houzz.com    
326 google.pl     200 200
327 plesk.com     403 Forbidden
328 senate.gov    
329 alibaba.com    
330 home.pl     200
331 goo.ne.jp    
332 aboutcookies.org    
333 oracle.com     200
334 archives.gov     301 301
335 zdnet.com    
336 theverge.com    
337 1688.com    
338 1and1.fr    
339 ucla.edu     200 200
340 wikihow.com    
341 theglobeandmail.com    
342 scientificamerican.com    
343 evernote.com    
344 nypost.com    
345 gofundme.com    
346 1and1.com    
347 mailchimp.com    
348 sedo.com    
349 allaboutcookies.org     403 Forbidden 403 Forbidden
350 debian.org     200 200
351 fbcdn.net     200 200
352 umn.edu    
353 wisc.edu    
354 utexas.edu     403 Forbidden 403 Forbidden
355 fastcompany.com    
356 businesswire.com    
357 ftc.gov     200
358 globo.com    
359 networkadvertising.org    
360 hibu.com    
361 psu.edu     200
362 psychologytoday.com    
363 shopify.com    
364 sagepub.com    
365 mozilla.com    
366 youronlinechoices.com    
367 ox.ac.uk    
368 bola.net    
369 campaign-archive1.com    
370 ok.ru    
371 walmart.com    
372 campaign-archive2.com    
373 cdbaby.com    
374 drupal.org    
375 census.gov     200
376 exblog.jp    
377 si.edu    
378 feedly.com    
379 studiopress.com    
380 sciencemag.org    
381 alexa.com    
382 worldbank.org    
383 mirror.co.uk    
384 prweb.com    
385 entrepreneur.com    
386 telegram.me     200 200
387 uk2.net    
388 hbr.org    
389 ap.org     301
390 newsweek.com    
391 intel.com    
392 inc.com    
393 usgs.gov     301
394 namebright.com    
395 icann.org     200 200
396 themegrill.com    
397 tripadvisor.co.uk    
398 shinystat.com    
399 nymag.com    
400 princeton.edu    
401 rollingstone.com    
402 shareasale.com    
403 target.com    
404 lemonde.fr    
405 nazwa.pl    
406 nyu.edu     403 Forbidden
407 office.com     500 Can't connect to office.com:80 (timeout) 200
408 jugem.jp    
409 odnoklassniki.ru    
410 rt.com     200
411 google.co.in     200 200
412 cisco.com     200 200
413 cam.ac.uk    
414 dreamhost.com    
415 quora.com    
416 tandfonline.com    
417 arstechnica.com    
418 dropboxusercontent.com    
419 oxfordjournals.org    
420 t-online.de     200 200
421 hhs.gov     301
422 hostgator.com    
423 stackoverflow.com    
424 mysql.com    
425 360.cn    
426 researchgate.net    
427 politico.com    
428 smugmug.com    
429 amazon.fr    
430 hubspot.com    
431 mlb.com     200
432 tmall.com    
433 discuz.net    
434 example.com     200 200
435 cmu.edu    
436 hollywoodreporter.com     200
437 lifehacker.com    
438 box.com    
439 list-manage2.com    
440 uchicago.edu    
441 accuweather.com    
442 zendesk.com    
443 liveinternet.ru    
444 oecd.org    
445 ebay.co.uk    
446 dropcatch.com    
447 admin.ch    
448 dell.com    
449 bls.gov     200
450 domainnameshop.com     200 200
451 nhk.or.jp    
452 google.ru     200 200
453 istockphoto.com    
454 livestream.com    
455 umd.edu    
456 safedog.cn    
457 teamviewer.com    
458 fotolia.com    
459 bmj.com    
460 shop-pro.jp    
461 va.gov     302 302
462 domeneshop.no     200 200
463 cafepress.com    
464 variety.com    
465 usc.edu    
466 openstreetmap.org     200 200
467 adweek.com    
468 cryoutcreations.eu    
469 apa.org    
470 nsw.gov.au    
471 blogspot.jp     200 404 Not Found
472 netflix.com     200 200
473 unc.edu    
474 att.com     301 301
475 xiti.com    
476 redcross.org    
477 com.com    
478 today.com    
479 mtv.com    
480 dot.gov     200
481 ieee.org    
482 windowsphone.com    
483 duke.edu    
484 purdue.edu    
485 symantec.com     200
486 amazon.ca    
487 state.tx.us    
488 usa.gov     301
489 eventbrite.co.uk    
490 army.mil     200
491 opensource.org     200 200
492 ucsd.edu    
493 staticflickr.com    
494 fao.org    
495 presscustomizr.com    
496 aliyun.com    
497 vox.com    
498 prezi.com    
499 bostonglobe.com    
500 athemes.com    
Total: 500   92 (18.4 %) 127 (25.4 %) 83 (16.6 %) 109 (21.8 %)

Data acquisition completed at Tue Feb 20 00:06:40 2018 UTC