Appnexus headquarters details
28 West 23rd Street 4th Floor
New York City
New York
10010-5260
United States
2007
Location map
Open in Google MapsAll Appnexus office locations
| City | State / region | Country | Type |
|---|---|---|---|
| New York City HQ | New York | United States | Headquarters |
About Appnexus
Appnexus (Private) is headquartered in New York City, New York, United States. Founded in 2007, the company operates across 10 countries with approximately 1,000 employees 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. This serves as the company's primary corporate address and is home to its executive leadership team.
Appnexus regional offices
Beyond its headquarters in New York City, Appnexus maintains 19 offices across 10 countries. Regional offices span 10 countries.
Appnexus contact information
The main switchboard for Appnexus headquarters can be reached at 16468256460. For investor relations, visit appnexus.com/investor-relations.
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.
Frequently asked questions
Where is Appnexus headquarters?
Appnexus's headquarters is located at 28 West 23rd Street 4th Floor, New York City, New York 10010-5260, United States.
How many offices does Appnexus have?
Appnexus operates 19 offices across 10 countries as of 2026.
What is Appnexus's corporate address?
The official corporate address is 28 West 23rd Street 4th Floor, New York City, New York 10010-5260.
When was Appnexus founded?
Appnexus was founded in 2007 and has grown to employ approximately 1,000 people worldwide.
What is Appnexus's phone number?
The main phone number for Appnexus headquarters is 16468256460.