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
72,846,615
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 3,306,876
2 linkedin.com 423,547
3 twitter.com 408,773
4 amazon.com 178,096
5 namu.wiki 141,205
6 facebook.com 133,168
7 x.com 126,270
8 instagram.com 115,933
9 allocine.fr 102,177
10 deezer.com 56,505
11 youtube.com 43,015
12 google.com 33,504
13 wiktionary.org 31,650
14 isfdb.org 29,189
15 trustpilot.com 22,203
16 yahoo.com 19,993
17 britannica.com 19,607
18 gutenberg.org 18,531
19 legacy.com 17,120
20 reddit.com 16,327
21 crunchbase.com 15,131
22 dictionary.com 13,105
23 wikiquote.org 9,691
24 metacritic.com 9,571
25 microsoft.com 9,545
26 fandom.com 9,416
27 tiktok.com 8,776
28 apple.com 8,244
29 uk.com 7,916
30 rottentomatoes.com 7,505
31 letterboxd.com 6,991
32 famousbirthdays.com 6,904
33 espn.com 6,441
34 indeed.com 6,214
35 github.com 6,129
36 quora.com 5,991
37 pinterest.com 5,955
38 webuy.com 5,888
39 forbes.com 5,848
40 justwatch.com 5,790
41 fifa.com 5,606
42 imdb.com 5,588
43 wikia.com 5,255
44 mit.edu 4,973
45 vikidia.org 4,841
46 history.com 4,813
47 netflix.com 4,716
48 reuters.com 4,670
49 house.gov 4,647
50 wikiwand.com 4,552
51 spotify.com 4,534
52 plus.lefigaro.fr 4,538
53 premiere.fr 4,496
54 nintendo.com 4,357
55 bbc.co.uk 4,084
56 theguardian.com 4,076
57 bloomberg.com 4,031
58 awards.com 4,008
59 investing.com 3,848
60 soundcloud.com 3,822
61 meta.com 3,807
62 last.fm 3,798
63 linkedin.cn 3,746
64 cambridge.org 3,718
65 dell.com 3,696
66 ca.gov 3,490
67 coach.com 3,456
68 vocabulary.com 3,400
69 ign.com 3,235
70 baseball-almanac.com 3,218
71 thesaurus.com 3,213
72 billboard.com 3,049
73 bbc.com 2,998
74 playstation.com 2,976
75 go.com 2,953
76 nih.gov 2,911
77 bio-on.it 2,917
78 treated.com 2,900
79 nasa.gov 2,891
80 genius.com 2,807
81 shopee.co.id 2,748
82 google.com.br 2,686
83 example.com 2,604
84 ed.gov 2,588
85 family-side.com 2,541
86 a-artist.com 2,539
87 discovery.ca 2,526
88 hotels.com 2,478
89 rs-online.com 2,424
90 rateyourmusic.com 2,400
91 wikisource.org 2,391
92 dailymail.co.uk 2,358
93 unesco.org 2,345
94 chess.com 2,315
95 washington.edu 2,277
96 rakuten.com 2,236
97 oracle.com 2,225
98 notrecinema.com 2,226
99 inc.com 2,217
100 wa.gov.au 2,128
101+ 62,102 additional niche-specific domains in full dataset covering 67,236,989 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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