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Onetag

Ad Exchange

Programmatic advertising technology platform

Corporate history

Companies that became part of Onetag through acquisitions and mergers, from the reports that confirmed them.

Profile

TierMid-market (1,000+)
OwnsIts own SSP
Identity solutionsRampID (LiveRamp) · ID5
AIAI bidding
StrengthsStrong identity options · AI bidding · Self-serve account
Same publishers asMagnite · Google Ad Manager · PubMatic

Access

How you get inApplication
Minimum spendNot published

Running campaigns

Audience dataThird-party data
Deals and supplyPrivate marketplace

What you buy

FormatsHigh impact
Deal typesCurated

Reach

publishers9,128
Direct share86%
Confirmed by the exchange133 / 7,861

North America · Latin America · Europe · Middle East & North Africa · Sub-Saharan Africa · South Asia · East Asia · Southeast Asia · Central Asia & Caucasus · Oceania

Quality

Ad-heavy sites reached2.4%
Median publisher rank#179,007
Supply score68 / 100 · #25 of 1,175

How to buy

How to open an account here, what it takes and the minimum spend.

In the news

Update

Jun 15, 2026

Onetag claims new Dynamo tool cuts CPA by 25% with zero tech fee

Update

Jun 15, 2026

Onetag Dynamo Delivers 25% Lower CPA with Zero Tech Fee by Optimising Outcomes Before the Bid

All 20 stories about Onetag

As an SSP: DSPs that buy through Onetag

1 DSP

Exchanges selling the same publishers as Onetag

8 exchanges

Publishers Onetag can sell

Which publishers this platform can sell, largest first.