Trusted Sources

Google Knowledge Graph: Entity isReference Domains

Dataset: 62,202 isReference domains | entities

Proprietary analysis of Google's entity validation patterns across the Knowledge Graph.

The Google leak in May 2024 confirmed that Google explicitly associates people with their profile pages (isReference) and articles they have written (isAuthor).

⚠️ You Can't Use Just ANY Domain!

Out of 1,738,093 domains we monitor, only 62,202 qualify as isReference domains.

3.65%

Only 3.65% of domains earn isReference status from Google. Domain selection is critical.

Key concepts:

Wikipedia is NOT Required (or even your best bet)

Wikipedia: 6 million entities
Kalicube Pro: 71 million entities
Knowledge Graph: 50 billion entities

0.012%

Wikipedia covers only 0.012% of the Knowledge Graph. If your entity isn't in that 0.012%, you need to build a Knowledge Panel with ~30 isReference url instead.

📊 Kalicube's Entity Validation Dataset

1,738,093
Domains Checked Regularly
62,202
isReference Domains
3.58% qualify
23,295,240
URLs Monitored
74,619,359
Entities Tracked

💡 Even Small Niche Domains Have isReference Authority

Examples from our dataset (December 2025):

kalicube.com 21 entities
searchengineland.com 11 entities
jasonbarnard.com 86 entities
searchenginejournal.com 270 entities
entrepreneur.com 1,292 entities
forbes.com 2,823 entities

Your niche-specific domains may have similar authority in your category.

Top 100 isReference Domains for All Entity Types

Rank Domain Entity Count
1 wikipedia.org 375,054
2 instagram.com 135,531
3 x.com 70,698
4 linkedin.com 54,253
5 namu.wiki 36,394
6 facebook.com 35,410
7 google.com 33,960
8 youtube.com 31,366
9 legacy.com 28,692
10 britannica.com 23,419
11 reddit.com 19,783
12 dictionary.com 18,935
13 amazon.com 14,848
14 fandom.com 13,150
15 microsoft.com 10,410
16 wiktionary.org 10,250
17 tiktok.com 9,463
18 letterboxd.com 8,852
19 crunchbase.com 8,628
20 apple.com 7,949
21 yahoo.com 6,671
22 cambridge.org 5,948
23 justwatch.com 5,868
24 rottentomatoes.com 5,863
25 quora.com 5,652
26 shopee.co.id 5,410
27 billboard.com 4,980
28 epicgames.com 4,922
29 hbomax.com 4,812
30 time.is 4,790
31 wikiwand.com 4,683
32 espn.com 4,565
33 history.com 4,555
34 fifa.com 4,280
35 shopee.ph 4,280
36 dictionary.net 3,940
37 imdb.com 3,931
38 bbc.com 3,885
39 spotify.com 3,821
40 nhl.com 3,814
41 forbes.com 3,799
42 github.com 3,793
43 pornhub.com 3,758
44 indeed.com 3,666
45 genius.com 3,657
46 independent.co.uk 3,642
47 theguardian.com 3,616
48 vocabulary.com 3,428
49 google.co.il 3,357
50 bing.com 3,331
51 temu.com 3,310
52 reuters.com 3,170
53 deel.com 3,049
54 nih.gov 3,044
55 xhamster.com 2,991
56 uk.com 2,990
57 eo-paris.fr 2,915
58 bloomberg.com 2,871
59 nfl.com 2,864
60 bbc.co.uk 2,848
61 amazon.co.uk 2,839
62 thesaurus.com 2,805
63 goodreads.com 2,635
64 gov.uk 2,607
65 house.gov 2,594
66 radiofrance.fr 2,569
67 televisionacademy.com 2,528
68 netflix.com 2,514
69 rateyourmusic.com 2,471
70 trustpilot.com 2,415
71 zhihu.com 2,386
72 ebay.com 2,379
73 merriam-webster.com 2,374
74 ca.gov 2,372
75 nintendo.com 2,350
76 aliexpress.com 2,340
77 amazon.fr 2,317
78 the-independent.com 2,305
79 grammy.com 2,242
80 stanford.edu 2,211
81 pinterest.com 2,194
82 gog.com 2,189
83 one-line.com 2,193
84 entrepreneur.com 2,123
85 inc.com 2,122
86 metacritic.com 2,121
87 watch.plex.tv 2,113
88 nba.com 2,093
89 delta.com 2,094
90 soundcloud.com 2,091
91 itv.com 2,078
92 google.com.br 2,069
93 libri.de 2,055
94 playstation.com 2,033
95 lyrics.com 2,028
96 premierleague.com 2,032
97 search.google 2,007
98 researchgate.net 2,006
99 steampowered.com 2,005
100 hotels.com 1,995
101+ 62,102 additional niche-specific domains in full dataset covering 73,418,651 additional entities

Why This Data Matters

Google validates entity information through patterns of corroborating mentions across trusted domains. This list shows where Google recognizes all entity types - but here's the catch: entity authority is extremely niche-specific.

Entity Validation at Scale

Google's Knowledge Graph requires consistent entity recognition across validated domains.

  • Only 3.65% of domains (62202 out of 1738093) qualify as isReference
  • Brands typically need ~30 entity-validated url for a stable Knowledge Panel
  • Each niche has unique entity authority patterns
  • Generic "authority lists" miss 95%+ of niche-specific opportunities

⚠️ This Free List is Intentionally Limited

The top 100 domains shown above are dominated by massive generalist sites. For 99% of brands, the real opportunities lie in the niche-specific domains that only appear in our full platform dataset.

Recommended Reading:

🔐 Find YOUR Niche-Specific isReference Domains

We monitor 23M+ URLs across 1.7M domains to identify the exclusive 3.65% that qualify as isReference domains for 72M+ entities. The Kalicube Pro platform maps your competitive landscape and identifies your niche-specific opportunities in 15 minutes.

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