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
71,605,061
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 3,282,731
2 linkedin.com 418,130
3 twitter.com 409,399
4 amazon.com 176,650
5 namu.wiki 136,560
6 facebook.com 130,699
7 x.com 119,475
8 allocine.fr 102,170
9 instagram.com 67,776
10 deezer.com 56,479
11 youtube.com 44,701
12 wiktionary.org 30,600
13 isfdb.org 29,971
14 google.com 28,631
15 trustpilot.com 21,902
16 gutenberg.org 18,816
17 yahoo.com 18,608
18 britannica.com 17,464
19 crunchbase.com 16,000
20 legacy.com 15,306
21 reddit.com 12,456
22 dictionary.com 12,266
23 wikiquote.org 10,190
24 tiktok.com 9,941
25 microsoft.com 9,874
26 fandom.com 9,001
27 metacritic.com 8,242
28 uk.com 7,486
29 apple.com 7,076
30 famousbirthdays.com 6,657
31 rottentomatoes.com 6,355
32 indeed.com 6,263
33 espn.com 6,217
34 webuy.com 5,888
35 justwatch.com 5,771
36 letterboxd.com 5,524
37 pinterest.com 5,414
38 imdb.com 5,395
39 forbes.com 5,379
40 github.com 5,298
41 wikia.com 5,255
42 mit.edu 5,141
43 vikidia.org 4,848
44 quora.com 4,729
45 netflix.com 4,721
46 reuters.com 4,665
47 fifa.com 4,622
48 plus.lefigaro.fr 4,538
49 theguardian.com 4,520
50 premiere.fr 4,496
51 spotify.com 4,474
52 house.gov 4,464
53 nintendo.com 4,379
54 history.com 4,066
55 awards.com 3,979
56 investing.com 3,855
57 wikiwand.com 3,819
58 bbc.co.uk 3,779
59 linkedin.cn 3,746
60 dell.com 3,720
61 soundcloud.com 3,723
62 cambridge.org 3,684
63 last.fm 3,649
64 meta.com 3,594
65 coach.com 3,436
66 bloomberg.com 3,291
67 vocabulary.com 3,245
68 ign.com 3,196
69 ca.gov 3,127
70 thesaurus.com 3,128
71 wikisource.org 3,054
72 go.com 2,970
73 bio-on.it 2,917
74 treated.com 2,900
75 baseball-almanac.com 2,760
76 war.gov 2,680
77 example.com 2,604
78 billboard.com 2,566
79 family-side.com 2,541
80 a-artist.com 2,539
81 discovery.ca 2,526
82 rateyourmusic.com 2,518
83 nb.com 2,481
84 genius.com 2,478
85 hotels.com 2,478
86 rs-online.com 2,424
87 bbc.com 2,395
88 diesel.com 2,374
89 unesco.org 2,367
90 washington.edu 2,369
91 dailymail.co.uk 2,358
92 app-microsoft.com 2,337
93 nih.gov 2,326
94 notrecinema.com 2,229
95 rakuten.com 2,223
96 wa.gov.au 2,169
97 google.com.br 2,150
98 artnet.com 2,133
99 oracle.com 2,134
100 twitch.tv 2,117
101+ 62,102 additional niche-specific domains in full dataset covering 66,116,294 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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