Starting 6 November 2025, Google is replacing the old ad networks blocking control with a new google authorised buyers blocking control — existing blocks are preserved, new authorised buyers will be allowed by default, and publishers get clearer parent/child visibility.
What changed (quick facts publishers want)
Launch date: 6 November 2025.
What’s removed: the old Ad networks blocking control and the “Automatically allow new Google-certified ad networks” toggle.
Default behavior after launch: New authorised buyers are allowed by default.
What’s preserved: your currently blocked ad networks will remain blocked and carry over into the new Authorised Buyers control — no action required to keep current blocks.
Excluded from the new list: inactive ad networks, test ad networks and Display & Video 360 (DV360) networks are not included in Authorised Buyers.
Source: Google’s Official Support Page
Why Google made this change
Google is modernizing brand-safety controls to match how programmatic demand is bought today — focusing on authorized buyers (DSPs, trading desks, ad networks with programmatic access to Google Partner Inventory) rather than legacy “ad network” labels.
The new UI gives better parent–child visibility and finer control over who can bid on your inventory.
What you should do now (practical, step-by-step)
Below I have described a step by step guide in very easier and shorter way:
Preview the new page: Sign in to AdSense → Brand safety → Content → Blocking controls → Authorised Buyers to inspect the layout before Nov 6.
The preview is view-only until launch. After that, it may be removed.
Confirm existing blocks: Any changes you make to Ad networks before launch are preserved — if you rely on custom blocks, keep them until the transition.
Decide your default policy: Because new authorised buyers will be allowed by default after launch, decide whether you’ll manually block specific buyers afterward.
Consider enabling the currently available “automatically allow new Google-certified ad networks” setting now to simulate the new default behavior (if you use it, as it is optional).
Audit DV360 & Advertiser blocks: DV360 accounts remain manageable from the Ad Review Centre (Advertiser detail view) after launch — but Authorised Buyers will be managed separately.
Ensure your DV360 blocks are recorded in the Ad Review Centre.
Document and monitor: Export or screenshot your current blocked list and re-check after 6 Nov to confirm mappings — good for audits and ad ops teams. And also you use that if you find any difficulty.
Quick checklist for publishers
At the end, below is a quick checklist for publishers to make sure if any step needs attension:
Sign into AdSense and open Brand safety → Content → Blocking controls → Authorised Buyers.
Screenshot current Ad networks blocked list.
Keep or add any manual blocks you rely on before Nov 6.
Review Ad Review Centre for any DV360 advertiser blocks.
After Nov 6, review the new Authorised Buyers list and block any unwanted bidders.
This is my first time pay a quick visit at here and i am really happy to read everthing at one place
Pretty! This has been a really wonderful post. Many thanks for providing these details.