4Book on YouTube
4Book sponsored 3 channels in 4 sponsored videos — the smallest channel had 1.2M subscribers. Sponsoring YouTube creators since January 2026. Last sponsored video detected Aug 2026.
Channel sizes 4Book sponsors
Distinct channels sponsored, by current subscriber count. The band you sit in tells you how often this brand says yes at your size.
- 0Under 10K subs
- 010K–100K subs
- 0100K–500K subs
- 0500K–1M subs
- 31M+ subs
Channels 4Book sponsored most
Top 3 of 3, by sponsored videos.
- 1Megaprojects1.6M subs · CZ2sponsored videos
- 2Into the Shadows1.2M subs · CZ1sponsored videos
- 3WarFronts1.4M subs · CZ1sponsored videos
Latest sponsored videos
The most recent 4 detections — the proof behind every count on this page.
Why Argentina Still Defends Its Worst War Crime...Into the Shadows · 1.2M subs · Aug 2026
How is the B-52 Stratofortress Still in Service?Megaprojects · 1.6M subs · Aug 2026
Why The US Can't Replace the Cobra and the ApacheMegaprojects · 1.6M subs · May 2026
The Greenland Crisis Has Broken NATOWarFronts · 1.4M subs · Jan 2026
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Counts are active sponsored videos in our index (published in the last year), detected from public YouTube data via the official YouTube Data API. A sponsored video is one whose description or paid-promotion disclosure names the brand. A detected sponsorship is not confirmation of contract terms, and does not mean the brand is currently taking new creators.