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
72,575,600
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 1,516,859
2 twitter.com 182,239
3 linkedin.com 180,545
4 instagram.com 131,647
5 x.com 106,356
6 allocine.fr 102,210
7 amazon.com 77,646
8 facebook.com 68,265
9 deezer.com 55,938
10 namu.wiki 40,517
11 youtube.com 37,354
12 google.com 34,514
13 legacy.com 28,701
14 britannica.com 21,478
15 reddit.com 17,992
16 wiktionary.org 16,844
17 dictionary.com 15,857
18 trustpilot.com 14,418
19 microsoft.com 13,481
20 yahoo.com 12,425
21 fandom.com 12,201
22 isfdb.org 11,375
23 gutenberg.org 9,693
24 crunchbase.com 9,583
25 tiktok.com 9,317
26 metacritic.com 9,121
27 rottentomatoes.com 8,714
28 letterboxd.com 8,273
29 espn.com 7,593
30 github.com 7,010
31 uk.com 6,832
32 fifa.com 6,646
33 justwatch.com 6,649
34 apple.com 6,231
35 history.com 5,920
36 quora.com 5,682
37 shopee.co.id 5,410
38 spotify.com 5,260
39 cambridge.org 5,258
40 wikia.com 5,249
41 hbomax.com 5,154
42 wikiwand.com 5,059
43 epicgames.com 4,877
44 pinterest.com 4,878
45 bbc.co.uk 4,708
46 webuy.com 4,626
47 plus.lefigaro.fr 4,526
48 premiere.fr 4,490
49 billboard.com 4,465
50 time.is 4,443
51 theguardian.com 4,433
52 forbes.com 4,352
53 imdb.com 4,343
54 shopee.ph 4,280
55 reuters.com 4,071
56 nfl.com 3,928
57 ign.com 3,807
58 vocabulary.com 3,787
59 nhl.com 3,773
60 bbc.com 3,749
61 bloomberg.com 3,748
62 hotels.com 3,599
63 soundcloud.com 3,455
64 vikidia.org 3,436
65 ca.gov 3,401
66 indeed.com 3,383
67 google.co.il 3,358
68 bing.com 3,354
69 independent.co.uk 3,299
70 dell.com 3,228
71 google.com.br 3,140
72 genius.com 3,041
73 pornhub.com 3,041
74 famousbirthdays.com 3,036
75 dictionary.net 2,962
76 itv.com 2,935
77 house.gov 2,852
78 netflix.com 2,822
79 playstation.com 2,776
80 nytimes.com 2,757
81 nih.gov 2,670
82 radiofrance.fr 2,602
83 washington.edu 2,579
84 thesaurus.com 2,493
85 france24.com 2,480
86 search.google 2,425
87 chess.com 2,368
88 nintendo.com 2,354
89 the-independent.com 2,297
90 rateyourmusic.com 2,293
91 kpmg.com 2,242
92 mit.edu 2,232
93 nasa.gov 2,220
94 gov.uk 2,206
95 gog.com 2,187
96 loc.gov 2,148
97 office.com 2,107
98 nps.gov 2,072
99 amazon.co.uk 2,075
100 watch.plex.tv 2,072
101+ 62,102 additional niche-specific domains in full dataset covering 69,550,803 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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