Identity graph
AppNexus headquarters, locations and relationships
- Legal name
- AppNexus Inc.
- Industry
- Digital Advertising Software
- Founded
- 2007
- Phone
- +1 646 825 6460
- Website
- appnexus.com
- LinkedIn profile for AppNexus
AppNexus office locations
| City | State / region | Country | Type |
|---|---|---|---|
| New York City | New York | United States | Headquarters |
| Sydney | New South Wales | Australia | Office |
| São Paulo | São Paulo | Brazil | Office |
| Paris | Île-de-France | France | Office |
| Hamburg | Hamburg | Germany | Office |
| Nagato | Yamaguchi | Japan | Office |
- Parent company
- AppNexus is part of Xandr.
- Competitors
- AppNexus competes with 12 organizations in the GraphIQ.ai identity graph.
Verified from public filings, company websites and news · Methodology
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Revenue, headcount, growth and industry codes.
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Capabilities (available after sign-in)
Products, services and certifications.
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News (available after sign-in)
Recent coverage and signals, resolved to the entity.
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And more (available after sign-in)
Subsidiaries, people and lookalike companies.
Who uses the AppNexus entity
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Revenue and GTM teams
Territories, enrichment and account expansion on one resolved account.
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Developers and AI agents
The entity and its relationships through the REST API and MCP server.
Developers -
Private equity and investors
Corporate family, comparable companies and deal sourcing.
Private equity -
Industry and supply chain
Suppliers, sites and partners mapped to the right legal entity.
Industry -
Government and public sector
Supplier vetting, ownership and jurisdiction checks against one verified entity.
Government
About AppNexus
AppNexus is headquartered in New York City, New York, United States. Founded in 2007, the company has 19 recorded locations across 10+ countries and employs approximately 1,000 people worldwide.
Where is AppNexus's main office?
AppNexus's main headquarters office is located at 28 West 23rd Street 4th Floor, New York City, New York 10010-5260, United States. This is the company's primary corporate address.
AppNexus regional offices
Beyond its headquarters in New York City, AppNexus has recorded locations in United States, Australia, Brazil, France, Germany, Japan, Mexico, Norway and 2 other countries.
AppNexus contact information
The main switchboard for AppNexus headquarters can be reached at +1 646 825 6460. Official website: appnexus.com.
What does AppNexus do?
AppNexus is an American multinational technology company operating a cloud-based software platform that enables and optimizes programmatic online advertising. Headquartered in the Flatiron District of New York City, the company has 23 offices in North America, Latin America, Europe, Asia and Australia.
One entity, every stage
Put AppNexus to work across your revenue bowtie
- Target Define the market Build the account list from companies shaped like your best customers, AppNexus included. Fingerprint search
- Cover Plan territories AppNexus's 19 locations roll up to one account, so it lands in one territory, once. Territory planning
- Engage Act on timing Leadership changes, funding and M&A arrive linked to the account, not a loose headline. Signal monitoring
- Convert Close on a resolved record Inbound and closed-won attach to one CRM record, with no duplicates to merge. CRM enrichment
- Retain Ground every answer Customer teams and AI agents answer from the same entity, with a source and a date. AI agent data layer
- Expand Find the next buyer inside Follow subsidiaries and divisions to the next team that can buy. Account expansion
About the source
What is GraphIQ.ai?
A B2B identity graph. It resolves each organization into one verified entity and maps its parent and subsidiaries, employees, competitors and news signals. Revenue teams use it in the product; AI agents query it through the REST API and MCP server.
POST/api/v2/organizations/search
AppNexus: frequently asked questions
Where is AppNexus headquarters?
28 West 23rd Street 4th Floor, New York City, New York 10010-5260, United States.
What is AppNexus's phone number?
+1 646 825 6460 (headquarters).
When was AppNexus founded?
2007.
How many employees does AppNexus have?
About 1,000, as of October 2026 (GraphIQ.ai estimate).
How many offices does AppNexus have?
19 locations across 10+ countries, including Sydney, São Paulo, Paris, Hamburg.
Questions about GraphIQ.ai
Is GraphIQ.ai a list of companies like a spreadsheet?
No. Each organization resolves to one verified entity linked to its parent, subsidiaries, people and signals, so AppNexus here is the same AppNexus in your CRM, territory plan and agent answers.
Where does this AppNexus data come from?
Public filings, company websites and news, resolved to one entity and continuously updated.