Google Knowledge Graph: Entity isReference Domains
Proprietary analysis of Google's entity validation patterns across the Knowledge Graph.
⚠️ 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.
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
💡 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 | 713,100 |
| 2 | instagram.com | 136,073 |
| 3 | x.com | 96,672 |
| 4 | allocine.fr | 83,392 |
| 5 | linkedin.com | 62,734 |
| 6 | deezer.com | 54,426 |
| 7 | facebook.com | 50,022 |
| 8 | twitter.com | 48,120 |
| 9 | namu.wiki | 39,644 |
| 10 | youtube.com | 36,710 |
| 11 | google.com | 34,942 |
| 12 | legacy.com | 28,594 |
| 13 | britannica.com | 22,144 |
| 14 | reddit.com | 18,207 |
| 15 | amazon.com | 17,411 |
| 16 | dictionary.com | 16,618 |
| 17 | microsoft.com | 13,957 |
| 18 | fandom.com | 12,459 |
| 19 | wiktionary.org | 11,783 |
| 20 | crunchbase.com | 10,167 |
| 21 | tiktok.com | 9,100 |
| 22 | trustpilot.com | 9,007 |
| 23 | letterboxd.com | 8,740 |
| 24 | rottentomatoes.com | 8,219 |
| 25 | yahoo.com | 8,054 |
| 26 | metacritic.com | 7,600 |
| 27 | github.com | 7,052 |
| 28 | quora.com | 6,832 |
| 29 | apple.com | 6,537 |
| 30 | fifa.com | 6,492 |
| 31 | justwatch.com | 6,387 |
| 32 | history.com | 5,988 |
| 33 | shopee.co.id | 5,410 |
| 34 | espn.com | 5,252 |
| 35 | wikiwand.com | 5,198 |
| 36 | hbomax.com | 5,154 |
| 37 | forbes.com | 4,991 |
| 38 | cambridge.org | 4,976 |
| 39 | epicgames.com | 4,922 |
| 40 | time.is | 4,790 |
| 41 | uk.com | 4,781 |
| 42 | imdb.com | 4,755 |
| 43 | billboard.com | 4,572 |
| 44 | theguardian.com | 4,433 |
| 45 | pinterest.com | 4,424 |
| 46 | shopee.ph | 4,280 |
| 47 | bbc.co.uk | 4,087 |
| 48 | dictionary.net | 3,940 |
| 49 | bbc.com | 3,840 |
| 50 | nhl.com | 3,827 |
| 51 | spotify.com | 3,814 |
| 52 | pornhub.com | 3,758 |
| 53 | independent.co.uk | 3,731 |
| 54 | isfdb.org | 3,554 |
| 55 | indeed.com | 3,460 |
| 56 | bloomberg.com | 3,458 |
| 57 | google.co.il | 3,357 |
| 58 | genius.com | 3,351 |
| 59 | bing.com | 3,270 |
| 60 | dell.com | 3,225 |
| 61 | vocabulary.com | 3,192 |
| 62 | wikia.com | 3,151 |
| 63 | nih.gov | 3,063 |
| 64 | xhamster.com | 2,991 |
| 65 | soundcloud.com | 2,943 |
| 66 | itv.com | 2,874 |
| 67 | eo-paris.fr | 2,876 |
| 68 | house.gov | 2,857 |
| 69 | nfl.com | 2,849 |
| 70 | temu.com | 2,799 |
| 71 | netflix.com | 2,786 |
| 72 | thesaurus.com | 2,722 |
| 73 | plus.lefigaro.fr | 2,715 |
| 74 | ca.gov | 2,674 |
| 75 | famousbirthdays.com | 2,632 |
| 76 | radiofrance.fr | 2,608 |
| 77 | goodreads.com | 2,595 |
| 78 | televisionacademy.com | 2,571 |
| 79 | amazon.co.uk | 2,522 |
| 80 | nytimes.com | 2,449 |
| 81 | google.com.br | 2,437 |
| 82 | france24.com | 2,425 |
| 83 | hotels.com | 2,418 |
| 84 | reuters.com | 2,373 |
| 85 | nintendo.com | 2,326 |
| 86 | the-independent.com | 2,294 |
| 87 | rateyourmusic.com | 2,264 |
| 88 | playstation.com | 2,193 |
| 89 | gog.com | 2,187 |
| 90 | deel.com | 2,185 |
| 91 | gov.uk | 2,169 |
| 92 | inc.com | 2,160 |
| 93 | ebay.com | 2,137 |
| 94 | zhihu.com | 2,102 |
| 95 | nasa.gov | 2,100 |
| 96 | one-line.com | 2,096 |
| 97 | loc.gov | 2,089 |
| 98 | delta.com | 2,089 |
| 99 | libri.de | 2,055 |
| 100 | aliexpress.com | 2,044 |
| 101+ | 62,102 additional niche-specific domains in full dataset covering 74,238,934 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:
- How to Get Your Brand in Google's Knowledge Graph Without a Wikipedia Page
- isReference - the key to corporate publisher and person content creator optimization
🔐 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.
Work With Us