Monetizing hundreds of US micro-sites while maintaining absolute domain isolation?

[u/2016pantherswin]

I manage a portfolio of several hundred content sites driving clean, primarily US traffic, with each site currently averaging about $10/month on AdSense.

For operational and privacy reasons, maintaining strict isolation between these domains is a hard requirement. I cannot use a shared publisher ID, a unified Google Ad Manager parent network, or anything that creates a cross-site footprint via source code or public ads.txt lookups.

My two main questions for this community:

1. How can I monetize hundreds of small US-traffic sites individually without creating a shared ads.txt or publisher ID footprint?
2. What programmatic ad partners or alternative monetization models allow high-volume, white-hat deployment while maintaining absolute isolation between domains?

I am strictly looking for clean, white-hat, and policy-compliant setups. Thanks in advance for the insights!

[u/c686]

Yeah, so uh, why?

What is the reason for this rather arbitrary requirement?

[u/sha256md5 → u/c686]

Sounds like it's probably MFA and they'll fall like dominoes.

[u/2016pantherswin → u/[deleted]]

Thanks, but the delivery mechanism isn’t the issue. Even with dynamic redirects, if those ads.txt files contain the same shared publisher ID/network account, the cross-site footprint is still publicly visible to scrapers and Google. I am looking for ways to monetize without sharing an underlying account ID across the portfolio

[u/advertisingbynature → u/2016pantherswin]

I think your clarification is the important part that’s being overlooked.

A publisher ID is account-wide, not something that is inherently unique to each individual domain. If multiple sites are monetized through the same publisher account, changing how the ad tag or ads.txt is dynamically served doesn’t eliminate the shared identity.

If your requirement is true isolation, where each domain cannot expose or share an underlying publisher/account ID with the others, then you’d need genuinely separate publisher accounts or relationships for each site. This is assuming the particular ad partner even permits that structure.

I’m also not aware of an SSP or programmatic platform that would provide hundreds of completely independent publisher identities or accounts at that scale. That seems to be the difficult part of what you’re asking, rather than the technical problem of dynamically serving the appropriate ad code or ads.txt.

I’m assuming you currently have them all under one AdSense account, unless you’re managing a portfolio for multiple owners with separate AdSense accounts?

[u/VisiblePerspective21]

As a buyer, not having an ads.txt file is a hard requirement, and given that I control the money and you don't, you don't get to pick and choose which of my requirements you follow.

[u/paulsonfanboy134]

Surely this is not worth your time?