IPv6 Deployment Aggregated Status

Limited to the top-50 per Top Level Domain extracted from the free Alexa top 1 million web sites (this list has been desactivated end of November 2016 then was reactivated, hence incomplete statistics) See the bottom of this page for more information on the tests.
Click on a country to see specific statistics about top sites within this country or click on a flag:

AfriNIC:
APNIC:
ARIN:
LACNIC:
RIPE:

Or do you prefer to have the list of all fully IPv6-enabled sites?. Display per country IPv6 prefixes.
Compare IPv6 deployments among countries. Predict IPv6 deployments in one country. See all IPv6-enabled BitTorrent peers. Same information as XML. Show countries with less than 50 sites:

Web (Alexa)

Rank	Country	Sample size	Weighted	Green	Orange Test or broken
1	Guernsey	50	52.61%	66.0% (33)	2.0% (1)
2	Armenia	50	68.46%	62.0% (31)	0.0% (0)
3	Samoa	50	56.27%	62.0% (31)	0.0% (0)
4	Azerbaijan	50	77.50%	62.0% (31)	0.0% (0)
5	Iceland	50	68.50%	60.0% (30)	0.0% (0)
6	Montenegro	50	62.99%	58.0% (29)	0.0% (0)
7	Belgium	50	62.58%	58.0% (29)	0.0% (0)
8	Norway	50	48.58%	56.0% (28)	2.0% (1)
9	Sweden	50	66.33%	56.0% (28)	0.0% (0)
10	Colombia	50	33.88%	56.0% (28)	0.0% (0)
11	Albania	50	34.52%	54.0% (27)	0.0% (0)
12	Switzerland	50	65.84%	54.0% (27)	0.0% (0)
13	European Union	50	56.20%	52.0% (26)	0.0% (0)
14	Saint Helena	50	69.64%	50.0% (25)	0.0% (0)
15	Singapore	50	42.90%	50.0% (25)	0.0% (0)
16	Tonga	50	40.55%	50.0% (25)	0.0% (0)
17	Nigeria	50	63.72%	48.0% (24)	0.0% (0)
18	Peru	50	63.06%	48.0% (24)	0.0% (0)
19	United States of America	50	70.30%	46.0% (23)	6.0% (3)
20	Iraq	50	63.07%	46.0% (23)	0.0% (0)
21	Antigua and Barbuda	50	27.05%	46.0% (23)	0.0% (0)
22	Philippines	50	27.48%	44.0% (22)	2.0% (1)
23	Greece	50	70.37%	44.0% (22)	0.0% (0)
24	Czech Republic	50	56.94%	44.0% (22)	0.0% (0)
25	Laos	50	64.55%	44.0% (22)	0.0% (0)
26	Palestinian Territory	50	59.31%	42.0% (21)	2.0% (1)
27	New Zealand	50	54.27%	42.0% (21)	0.0% (0)
28	Anguilla	50	58.76%	42.0% (21)	0.0% (0)
29	Germany	50	38.49%	42.0% (21)	0.0% (0)
30	Thailand	50	43.90%	40.0% (20)	2.0% (1)
31	Ukraine	50	43.03%	40.0% (20)	2.0% (1)
32	India	50	59.73%	40.0% (20)	0.0% (0)
33	Somalia	50	51.71%	38.0% (19)	2.0% (1)
34	Slovakia	50	49.87%	38.0% (19)	0.0% (0)
35	Kenya	50	34.72%	38.0% (19)	0.0% (0)
36	Slovenia	50	35.72%	38.0% (19)	0.0% (0)
37	Finland	50	57.49%	38.0% (19)	0.0% (0)
38	Brazil	50	31.88%	38.0% (19)	0.0% (0)
39	Australia	50	40.48%	36.0% (18)	0.0% (0)
40	Malaysia	50	24.97%	36.0% (18)	0.0% (0)
41	Pakistan	50	39.49%	36.0% (18)	0.0% (0)
42	Libya	50	47.21%	34.0% (17)	2.0% (1)
43	South Africa	50	46.09%	34.0% (17)	0.0% (0)
44	Israel	50	53.00%	34.0% (17)	0.0% (0)
45	Montserrat	50	16.68%	34.0% (17)	0.0% (0)
46	Romania	50	50.99%	34.0% (17)	0.0% (0)
47	Indonesia	50	25.66%	34.0% (17)	0.0% (0)
48	United Arab Emirates	50	27.01%	32.0% (16)	0.0% (0)
49	Austria	50	49.56%	32.0% (16)	0.0% (0)
50	Mexico	50	51.22%	32.0% (16)	0.0% (0)
51	France	50	49.47%	30.0% (15)	2.0% (1)
52	United-Kingdom	50	39.76%	30.0% (15)	0.0% (0)
53	Mauritius	50	27.78%	30.0% (15)	0.0% (0)
54	Costa Rica	50	26.50%	30.0% (15)	0.0% (0)
55	Egypt	50	60.10%	30.0% (15)	0.0% (0)
56	Hong Kong	50	46.31%	30.0% (15)	0.0% (0)
57	Argentina	50	50.21%	28.0% (14)	0.0% (0)
58	Lebanon	50	48.82%	26.0% (13)	2.0% (1)
59	Taiwan	50	33.78%	26.0% (13)	0.0% (0)
60	Canada	50	17.49%	26.0% (13)	0.0% (0)
61	Bolivia	50	49.43%	26.0% (13)	0.0% (0)
62	Italy	50	25.59%	26.0% (13)	0.0% (0)
63	Ireland	50	21.88%	26.0% (13)	0.0% (0)
64	Portugal	50	12.27%	26.0% (13)	0.0% (0)
65	Turkey	50	33.51%	26.0% (13)	0.0% (0)
66	Denmark	50	14.46%	26.0% (13)	0.0% (0)
67	Hungary	50	44.13%	24.0% (12)	2.0% (1)
68	Spain	50	18.80%	24.0% (12)	0.0% (0)
69	Serbia	50	31.68%	24.0% (12)	0.0% (0)
70	Vietnam	50	31.64%	24.0% (12)	0.0% (0)
71	Bulgaria	50	38.13%	24.0% (12)	0.0% (0)
72	Chile	50	33.21%	22.0% (11)	0.0% (0)
73	Qatar	50	36.08%	22.0% (11)	0.0% (0)
74	Mongolia	50	17.54%	22.0% (11)	0.0% (0)
75	Bangladesh	50	21.38%	22.0% (11)	0.0% (0)
76	Poland	50	9.57%	20.0% (10)	2.0% (1)
77	Georgia	50	36.37%	20.0% (10)	0.0% (0)
78	Latvia	50	13.21%	20.0% (10)	0.0% (0)
79	Tunisia	50	46.97%	20.0% (10)	0.0% (0)
80	Japan	50	9.36%	18.0% (9)	0.0% (0)
81	Ecuador	50	29.94%	18.0% (9)	0.0% (0)
82	Russia	50	38.48%	16.0% (8)	2.0% (1)
83	China	50	12.73%	14.0% (7)	4.0% (2)
84	Saudi Arabia	50	38.71%	12.0% (6)	0.0% (0)
85	Iran	50	4.74%	8.0% (4)	0.0% (0)
86	South Korea	50	5.11%	8.0% (4)	0.0% (0)
87	Jordan	50	36.71%	8.0% (4)	0.0% (0)
88	Kazakhstan	50	32.71%	8.0% (4)	0.0% (0)
89	Tanzania	50	12.97%	6.0% (3)	0.0% (0)
90	Algeria	50	25.91%	4.0% (2)	0.0% (0)

Email (Alexa)

Rank	Country	Sample size	Weighted	Green	Orange Test or broken
1	Anguilla	50	42.44%	74.0% (37)	0.0% (0)
2	Hungary	50	48.16%	56.0% (28)	0.0% (0)
3	United States of America	50	63.15%	54.0% (27)	0.0% (0)
4	Guernsey	50	60.14%	52.0% (26)	0.0% (0)
5	Vietnam	50	52.40%	52.0% (26)	0.0% (0)
6	Greece	50	69.16%	48.0% (24)	0.0% (0)
7	Armenia	50	22.81%	46.0% (23)	0.0% (0)
8	Libya	50	55.65%	44.0% (22)	0.0% (0)
9	Indonesia	50	47.47%	44.0% (22)	0.0% (0)
10	Thailand	50	41.68%	42.0% (21)	0.0% (0)
11	Kazakhstan	50	60.79%	40.0% (20)	0.0% (0)
12	Czech Republic	50	49.36%	40.0% (20)	0.0% (0)
13	Norway	50	32.64%	40.0% (20)	0.0% (0)
14	Ukraine	50	56.63%	40.0% (20)	0.0% (0)
15	Azerbaijan	50	43.57%	38.0% (19)	2.0% (1)
16	Colombia	50	17.10%	38.0% (19)	0.0% (0)
17	Nigeria	50	61.99%	38.0% (19)	0.0% (0)
18	Latvia	50	33.94%	38.0% (19)	0.0% (0)
19	France	50	47.41%	36.0% (18)	0.0% (0)
20	Brazil	50	24.03%	36.0% (18)	0.0% (0)
21	Hong Kong	50	55.78%	36.0% (18)	0.0% (0)
22	Spain	50	50.28%	36.0% (18)	0.0% (0)
23	Iraq	50	42.04%	34.0% (17)	0.0% (0)
24	Sweden	50	18.02%	34.0% (17)	0.0% (0)
25	Montenegro	50	13.32%	34.0% (17)	0.0% (0)
26	Italy	50	18.54%	34.0% (17)	0.0% (0)
27	Ireland	50	20.81%	34.0% (17)	0.0% (0)
28	Kenya	50	31.31%	34.0% (17)	0.0% (0)
29	Somalia	50	16.50%	32.0% (16)	0.0% (0)
30	United-Kingdom	50	18.73%	32.0% (16)	0.0% (0)
31	Switzerland	50	44.81%	32.0% (16)	0.0% (0)
32	Denmark	50	49.33%	30.0% (15)	0.0% (0)
33	Malaysia	50	18.70%	30.0% (15)	0.0% (0)
34	Poland	50	16.59%	30.0% (15)	0.0% (0)
35	Slovakia	50	14.30%	30.0% (15)	0.0% (0)
36	Chile	50	44.00%	30.0% (15)	0.0% (0)
37	Philippines	50	19.76%	30.0% (15)	0.0% (0)
38	Mexico	50	23.20%	30.0% (15)	0.0% (0)
39	Algeria	50	34.54%	30.0% (15)	0.0% (0)
40	South Africa	50	40.28%	30.0% (15)	0.0% (0)
41	Slovenia	50	38.45%	28.0% (14)	2.0% (1)
42	India	50	26.72%	28.0% (14)	0.0% (0)
43	Pakistan	50	31.39%	28.0% (14)	0.0% (0)
44	Belgium	50	26.99%	28.0% (14)	0.0% (0)
45	Romania	50	41.17%	28.0% (14)	0.0% (0)
46	Taiwan	50	46.12%	28.0% (14)	0.0% (0)
47	Bulgaria	50	40.07%	28.0% (14)	0.0% (0)
48	Georgia	50	33.89%	28.0% (14)	0.0% (0)
49	Serbia	50	34.33%	26.0% (13)	2.0% (1)
50	Finland	50	25.61%	26.0% (13)	0.0% (0)
51	Russia	50	38.38%	26.0% (13)	0.0% (0)
52	Saint Helena	50	22.51%	26.0% (13)	0.0% (0)
53	Albania	50	31.06%	24.0% (12)	4.0% (2)
54	Argentina	50	47.23%	24.0% (12)	0.0% (0)
55	Egypt	50	41.42%	24.0% (12)	0.0% (0)
56	European Union	50	8.66%	24.0% (12)	0.0% (0)
57	Turkey	50	30.86%	22.0% (11)	0.0% (0)
58	Ecuador	50	44.67%	22.0% (11)	0.0% (0)
59	Portugal	50	20.26%	22.0% (11)	0.0% (0)
60	Germany	50	27.52%	22.0% (11)	0.0% (0)
61	Bangladesh	50	18.23%	20.0% (10)	2.0% (1)
62	Japan	50	20.26%	20.0% (10)	0.0% (0)
63	Singapore	50	32.57%	20.0% (10)	0.0% (0)
64	Palestinian Territory	50	7.40%	20.0% (10)	0.0% (0)
65	Peru	50	39.69%	20.0% (10)	0.0% (0)
66	Mongolia	50	15.26%	20.0% (10)	0.0% (0)
67	Montserrat	50	9.23%	20.0% (10)	0.0% (0)
68	Laos	50	15.65%	20.0% (10)	0.0% (0)
69	Tunisia	50	40.65%	18.0% (9)	10.0% (5)
70	Samoa	50	20.69%	18.0% (9)	2.0% (1)
71	Canada	50	21.07%	18.0% (9)	0.0% (0)
72	New Zealand	50	26.16%	18.0% (9)	0.0% (0)
73	Mauritius	50	14.55%	18.0% (9)	0.0% (0)
74	Israel	50	35.74%	16.0% (8)	0.0% (0)
75	Australia	50	33.21%	16.0% (8)	0.0% (0)
76	Bolivia	50	16.97%	14.0% (7)	0.0% (0)
77	Qatar	50	31.84%	14.0% (7)	0.0% (0)
78	Tanzania	50	15.43%	14.0% (7)	0.0% (0)
79	Lebanon	50	39.49%	12.0% (6)	0.0% (0)
80	Tonga	50	6.34%	12.0% (6)	0.0% (0)
81	United Arab Emirates	50	21.09%	12.0% (6)	0.0% (0)
82	South Korea	50	8.30%	12.0% (6)	0.0% (0)
83	Costa Rica	50	10.23%	12.0% (6)	0.0% (0)
84	Saudi Arabia	50	28.88%	10.0% (5)	0.0% (0)
85	Antigua and Barbuda	50	13.39%	10.0% (5)	0.0% (0)
86	China	50	9.40%	8.0% (4)	0.0% (0)
87	Iceland	50	14.53%	8.0% (4)	0.0% (0)
88	Austria	50	7.91%	8.0% (4)	0.0% (0)
89	Jordan	50	26.45%	8.0% (4)	0.0% (0)

DNS (Alexa)

Rank	Country	Sample size	Weighted	Green	Orange Test or broken
1	Anguilla	50	91.23%	98.0% (49)	0.0% (0)
2	Samoa	50	89.34%	96.0% (48)	2.0% (1)
3	Guernsey	50	90.81%	96.0% (48)	0.0% (0)
4	Sweden	50	91.00%	96.0% (48)	0.0% (0)
5	Germany	50	90.39%	94.0% (47)	2.0% (1)
6	Colombia	50	73.84%	94.0% (47)	2.0% (1)
7	United States of America	50	87.97%	94.0% (47)	2.0% (1)
8	Norway	50	89.01%	92.0% (46)	0.0% (0)
9	Montenegro	50	74.85%	90.0% (45)	2.0% (1)
10	Ireland	50	88.31%	88.0% (44)	6.0% (3)
11	Tonga	50	86.43%	88.0% (44)	2.0% (1)
12	New Zealand	50	87.46%	88.0% (44)	0.0% (0)
13	Singapore	50	83.35%	86.0% (43)	4.0% (2)
14	Antigua and Barbuda	50	57.87%	86.0% (43)	4.0% (2)
15	Somalia	50	78.25%	86.0% (43)	2.0% (1)
16	France	50	84.08%	86.0% (43)	2.0% (1)
17	Czech Republic	50	76.63%	86.0% (43)	0.0% (0)
18	Denmark	50	81.77%	86.0% (43)	0.0% (0)
19	Ukraine	50	83.23%	86.0% (43)	0.0% (0)
20	Australia	50	84.62%	84.0% (42)	6.0% (3)
21	Iceland	50	84.18%	84.0% (42)	0.0% (0)
22	Finland	50	86.03%	82.0% (41)	6.0% (3)
23	Laos	50	60.59%	82.0% (41)	6.0% (3)
24	Belgium	50	78.33%	82.0% (41)	2.0% (1)
25	Armenia	50	76.83%	82.0% (41)	0.0% (0)
26	Austria	50	84.77%	82.0% (41)	0.0% (0)
27	Montserrat	50	78.09%	80.0% (40)	4.0% (2)
28	Switzerland	50	83.14%	80.0% (40)	2.0% (1)
29	Saint Helena	50	85.26%	80.0% (40)	0.0% (0)
30	Greece	50	60.29%	78.0% (39)	2.0% (1)
31	Spain	50	81.46%	74.0% (37)	6.0% (3)
32	Azerbaijan	50	81.47%	74.0% (37)	4.0% (2)
33	Slovenia	50	79.26%	74.0% (37)	4.0% (2)
34	Albania	50	68.46%	74.0% (37)	2.0% (1)
35	Philippines	50	80.96%	74.0% (37)	2.0% (1)
36	Israel	50	70.63%	72.0% (36)	10.0% (5)
37	Mexico	50	58.41%	72.0% (36)	4.0% (2)
38	Pakistan	50	79.78%	72.0% (36)	2.0% (1)
39	Hungary	50	53.56%	72.0% (36)	0.0% (0)
40	Nigeria	50	76.36%	72.0% (36)	0.0% (0)
41	India	50	77.05%	70.0% (35)	14.0% (7)
42	United-Kingdom	50	78.77%	70.0% (35)	8.0% (4)
43	Brazil	50	68.73%	70.0% (35)	4.0% (2)
44	Lebanon	50	68.72%	70.0% (35)	4.0% (2)
45	Hong Kong	50	66.58%	70.0% (35)	2.0% (1)
46	European Union	50	74.39%	70.0% (35)	0.0% (0)
47	South Africa	50	62.66%	68.0% (34)	12.0% (6)
48	Chile	50	69.52%	68.0% (34)	6.0% (3)
49	Ecuador	50	66.88%	68.0% (34)	6.0% (3)
50	Latvia	50	48.45%	68.0% (34)	4.0% (2)
51	Peru	50	76.37%	66.0% (33)	8.0% (4)
52	Canada	50	74.19%	66.0% (33)	8.0% (4)
53	Malaysia	50	79.67%	66.0% (33)	6.0% (3)
54	Slovakia	50	77.91%	66.0% (33)	6.0% (3)
55	Romania	50	75.49%	66.0% (33)	2.0% (1)
56	Taiwan	50	71.61%	66.0% (33)	2.0% (1)
57	Japan	50	45.25%	66.0% (33)	0.0% (0)
58	Poland	50	75.27%	66.0% (33)	0.0% (0)
59	Thailand	50	72.80%	64.0% (32)	14.0% (7)
60	Palestinian Territory	50	78.86%	64.0% (32)	0.0% (0)
61	Indonesia	50	77.48%	62.0% (31)	6.0% (3)
62	China	50	73.57%	62.0% (31)	0.0% (0)
63	Mauritius	50	74.43%	62.0% (31)	0.0% (0)
64	Georgia	50	76.76%	60.0% (30)	2.0% (1)
65	Kenya	50	67.43%	60.0% (30)	2.0% (1)
66	Italy	50	65.57%	58.0% (29)	2.0% (1)
67	Libya	50	71.47%	58.0% (29)	0.0% (0)
68	United Arab Emirates	50	65.96%	58.0% (29)	0.0% (0)
69	Iraq	50	67.68%	58.0% (29)	0.0% (0)
70	Turkey	50	53.11%	56.0% (28)	2.0% (1)
71	Portugal	50	42.80%	54.0% (27)	8.0% (4)
72	Serbia	50	62.75%	54.0% (27)	2.0% (1)
73	Bulgaria	50	49.75%	48.0% (24)	16.0% (8)
74	Kazakhstan	50	64.79%	48.0% (24)	0.0% (0)
75	Costa Rica	50	41.82%	46.0% (23)	12.0% (6)
76	Vietnam	50	56.52%	44.0% (22)	18.0% (9)
77	Egypt	50	63.80%	44.0% (22)	4.0% (2)
78	Russia	50	62.44%	42.0% (21)	2.0% (1)
79	Mongolia	50	31.05%	42.0% (21)	0.0% (0)
80	Argentina	50	65.45%	40.0% (20)	2.0% (1)
81	Bangladesh	50	57.90%	38.0% (19)	6.0% (3)
82	Qatar	50	45.79%	38.0% (19)	0.0% (0)
83	Iran	50	28.12%	36.0% (18)	0.0% (0)
84	Saudi Arabia	50	52.16%	34.0% (17)	2.0% (1)
85	Bolivia	50	56.69%	32.0% (16)	2.0% (1)
86	Jordan	50	47.36%	28.0% (14)	30.0% (15)
87	Tanzania	50	21.79%	26.0% (13)	38.0% (19)
88	Tunisia	50	52.11%	26.0% (13)	12.0% (6)
89	South Korea	50	13.92%	26.0% (13)	2.0% (1)
90	Algeria	50	27.39%	8.0% (4)	0.0% (0)

IPv6 Enabled Users (Google)

Rank	Country	%-age
1	France	68.03 %
2	Germany	64.26 %
3	India	63.75 %
4	Belgium	62.56 %
5	Malaysia	57.70 %
6	Greece	57.03 %
7	Saudi Arabia	56.51 %
8	Vietnam	50.53 %
9	Taiwan	48.05 %
10	Luxembourg	46.89 %
11	United States of America	45.58 %
12	United Arab Emirates	45.13 %
13	Hungary	44.50 %
14	United-Kingdom	44.37 %
15	Thailand	44.26 %
16	Japan	44.06 %
17	Mexico	43.81 %
18	Brazil	43.32 %
19	Uruguay	42.82 %
20	Finland	41.58 %
21	Sri Lanka	41.37 %
22	Israel	40.25 %
23	Canada	34.56 %
24	Trinidad and Tobago	34.55 %
25	Portugal	33.70 %
26	Guatemala	33.67 %
27	Switzerland	33.31 %
28	Ecuador	28.68 %
29	Nepal	27.74 %
30	Australia	27.33 %
31	Czech Republic	26.41 %
32	Bhutan	26.21 %
33	Romania	25.66 %
34	Ireland	25.47 %
35	Austria	25.43 %
36	Paraguay	24.07 %
37	Peru	23.48 %
38	Guyana (Republic of)	22.09 %
39	Gabon	20.12 %
40	Netherlands	19.48 %
41	Colombia	18.81 %
42	Kuwait	18.72 %
43	Poland	18.10 %
44	Nicaragua	17.73 %
45	Togo	17.41 %
46	New Zealand	17.38 %
47	Philippines	15.76 %
48	Bolivia	15.64 %
49	Saint Lucia	14.94 %
50	Argentina	14.71 %
51	Singapore	14.39 %
52	Macau	14.02 %
53	Sweden	13.98 %
54	El Salvador	13.38 %
55	South Korea	13.33 %
56	Myanmar (Burma)	12.86 %
57	Oman	12.67 %
58	Slovenia	11.93 %
59	Chile	11.44 %
60	Congo (Brazzaville)	11.26 %
61	Belarus	10.55 %
62	Indonesia	10.26 %
63	Jamaica	10.17 %
64	Bosnia and Herzegovina	9.49 %
65	Bulgaria	9.17 %
66	Denmark	8.51 %
67	Zimbabwe	8.41 %
68	Jordan	8.25 %
69	Slovakia	8.07 %
70	Albania	7.70 %
71	Kazakhstan	7.36 %
72	Georgia	7.28 %
73	Moldova	7.19 %
74	Saint Vincent and the Grenadines	7.16 %
75	Rwanda	7.14 %
76	Iran	7.09 %
77	Croatia	6.80 %
78	Norway	6.46 %
79	Belize	6.08 %
80	Russia	5.62 %
81	Serbia	5.48 %
82	Kenya	5.47 %
83	Italy	5.31 %
84	Virgin Islands (Bristish)	4.67 %
85	Pakistan	4.65 %
86	Seychelles	3.46 %
87	Suriname	3.33 %
88	Egypt	3.22 %
89	Armenia	2.77 %
90	Grenada	2.73 %
91	Spain	2.56 %
92	Lebanon	2.44 %
93	China	2.22 %
94	Puerto Rico	2.03 %
95	Dominican Republic	1.93 %
96	South Africa	1.90 %
97	Bangladesh	1.77 %
98	Honduras	1.42 %
99	Fiji	1.20 %
100	U.S. Virgin Islands	1.10 %

Tests are:

Web:
- GREEN: a AAAA exists for www.$domain or $domain and an HTTP connection over IPv6 was successful
- ORANGE: a AAAA exists for www6.$domain or ipv6.$domain or www.ipv6.$domain and an HTTP connection over IPv6 was successful
- RED: no AAAA exists for any sensible derivation of $domain or an HTTP connection over IPv6 was not succesful
Email:
- GREEN: a AAAA exists for one MX of $domain and a SMTP connection over IPv6 was successful
- ORANGE: a AAAA exists for one MX of $domain but a SMTP connection over IPv6 was not successful
- RED: no AAAA exists for any MX of $domain
DNS:
- GREEN: a AAAA exists for one NS of $domain and a DNS query over IPv6 was answered
- RED: no AAAA exists for any NS of $domain but a DNS query over IPv6 was not answered
- n/m: means n servers out of m have an IPv6 address

OpenDNS rank is n/m meaning n^th in the country (actually TLD -- so not very accurate) and m^th worldwide. Before 20th of November 2016, the world-wide ranking was based on Alexa top 1 million web sites until the service was discontinued by Alexa. Since 20th of December 2016, the source of the top 1 million is Umbrella service by OpenDNS (a Cisco division). The data set are not consistent, so, it may be difficult to compare the situation before and after December 2016.

Based on same prior art from Mark Prior at http://www.mrp.net/IPv6_Survey.html.
You may also be interested in statistics for IPv6 browsers at https://www.vyncke.org/countv6/stats.php.