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
72,142,856
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 3,297,844
2 linkedin.com 422,700
3 twitter.com 408,932
4 amazon.com 177,650
5 namu.wiki 138,397
6 facebook.com 132,610
7 x.com 127,082
8 instagram.com 106,606
9 allocine.fr 102,174
10 deezer.com 56,481
11 youtube.com 43,726
12 wiktionary.org 31,094
13 google.com 30,527
14 isfdb.org 29,685
15 trustpilot.com 22,208
16 yahoo.com 19,625
17 britannica.com 19,179
18 gutenberg.org 18,821
19 crunchbase.com 15,796
20 legacy.com 15,308
21 reddit.com 14,000
22 dictionary.com 12,734
23 wikiquote.org 9,691
24 microsoft.com 9,583
25 tiktok.com 9,483
26 fandom.com 9,260
27 metacritic.com 9,096
28 apple.com 7,467
29 uk.com 7,449
30 rottentomatoes.com 7,009
31 famousbirthdays.com 6,724
32 espn.com 6,237
33 indeed.com 6,213
34 webuy.com 5,888
35 letterboxd.com 5,800
36 justwatch.com 5,788
37 github.com 5,776
38 fifa.com 5,606
39 pinterest.com 5,601
40 forbes.com 5,481
41 imdb.com 5,431
42 quora.com 5,256
43 wikia.com 5,255
44 spotify.com 4,997
45 mit.edu 4,967
46 vikidia.org 4,848
47 history.com 4,757
48 netflix.com 4,717
49 reuters.com 4,646
50 house.gov 4,535
51 plus.lefigaro.fr 4,538
52 premiere.fr 4,496
53 theguardian.com 4,419
54 wikiwand.com 4,391
55 nintendo.com 4,357
56 bbc.co.uk 4,219
57 bloomberg.com 4,029
58 awards.com 4,008
59 soundcloud.com 3,866
60 investing.com 3,845
61 meta.com 3,807
62 last.fm 3,797
63 linkedin.cn 3,746
64 dell.com 3,698
65 cambridge.org 3,688
66 coach.com 3,456
67 vocabulary.com 3,347
68 ign.com 3,235
69 baseball-almanac.com 3,218
70 thesaurus.com 3,201
71 ca.gov 3,014
72 bbc.com 2,996
73 playstation.com 2,967
74 go.com 2,948
75 bio-on.it 2,917
76 nih.gov 2,913
77 treated.com 2,900
78 billboard.com 2,742
79 rateyourmusic.com 2,632
80 example.com 2,604
81 genius.com 2,592
82 nasa.gov 2,578
83 wikisource.org 2,561
84 family-side.com 2,541
85 a-artist.com 2,539
86 discovery.ca 2,526
87 ed.gov 2,511
88 hotels.com 2,478
89 nb.com 2,460
90 rs-online.com 2,424
91 dailymail.co.uk 2,359
92 unesco.org 2,345
93 chess.com 2,315
94 washington.edu 2,276
95 rakuten.com 2,236
96 oracle.com 2,221
97 notrecinema.com 2,225
98 google.com.br 2,150
99 wa.gov.au 2,128
100 artnet.com 2,128
101+ 62,102 additional niche-specific domains in full dataset covering 66,568,529 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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