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4. google.com
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8. wikidata.org
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10. ncbi.nlm.nih.gov
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11. viaf.org
50510
12. d-nb.info
49559
13. web.archive.org
46618
14. dx.doi.org
45543
15. en.wikipedia.org
42586
16. alexa.com
41217
17. youtube.com
40281
18. insee.fr
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37967
37595
21. baidu.com
36584
22. news.bbc.co.uk
28135
23. id.loc.gov
25980
24. bioinfo.cn
25425
25. dnsstuff.com
22478
26. db.kib.ac.cn
22468
27. facebook.com
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28. catalogue.bnf.fr
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29. data.bnf.fr
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32. fishbase.org
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34. isni-url.oclc.nl
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37. news.baidu.com
18146
38. image.baidu.com
18045
39. id.ndl.go.jp
16868
40. idref.fr
16679
41. bbc.co.uk
14652
13881
43. musicbrainz.org
13107
12009
45. imdb.com
11472
46. weibo.com
11278
47. robtex.com
11270
48. dnswatch.info
11221
49. twitter.com
11176
10703
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10010
53. zh.wikipedia.org
9808
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55. ssd.jpl.nasa.gov
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57. webcitation.org
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58. ja.wikipedia.org
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60. ent.sina.com.cn
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64. arxiv.org
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65. nla.gov.au
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66. cfa-harvard.edu
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67. news.sina.com.cn
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68. sil.org
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69. nytimes.com
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70. bbc.com
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71. nlm.nih.gov
6671
72. rcsb.org
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73. news.163.com
6261
74. hkmdb.com
6214
75. libris.kb.se
6012
76. udn.com
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79. fifa.com
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80. census.gov
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81. cna.com.tw
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82. getty.edu
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83. nownews.com
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84. hkex.com.hk
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85. news.ifeng.com
4909
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4760
88. npc.gov.cn
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90. aleph.nkp.cz
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93. iucnredlist.org
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96. timaticweb.com
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97. baike.baidu.com
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98. douban.com
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100. billboard.com
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