> Enrich.chat gives AI agents verified work emails and mobiles. To use it from an agent, read https://enrich.chat/agents.md . This is the Markdown version of https://enrich.chat/companies-using/open-adstream/ # Companies using Open AdStream (AppNexus) Open AdStream is an ad serving platform, later part of AppNexus, used by publishers to manage and deliver online advertising. Here are the organizations where it was detected, where it is most common and how to reach the people who run it. By Enrich.chat Editorial. Updated October 21, 2026. **Short answer:** Organizations that use Open AdStream (AppNexus) include Amazon, Accenture, Starbucks, Walgreens and Google. Open AdStream (AppNexus) is in the advertising and retargeting category; below are the industries where it is most common, how adoption changes with size and the tools found alongside it. ## What is Open AdStream (AppNexus)? Open AdStream is an ad serving platform, later part of AppNexus, used by publishers to manage and deliver online advertising. It sits in the advertising and retargeting category and is usually owned by advertising and paid media leaders. ## Which companies use Open AdStream (AppNexus)? Organizations where Open AdStream (AppNexus) was detected include Amazon, Accenture, Starbucks, Walgreens and Google. The table lists a selection of larger ones in alphabetical order; names link to company profiles. | Company | Industry | Size | | --- | --- | --- | | [Accenture](https://enrich.chat/company/accenture/) | Management consulting | 100,000+ | | [Airbus](https://enrich.chat/company/airbus/) | Aviation and aerospace | 100,000+ | | [Albertsons](https://enrich.chat/company/albertsons/) | Retail | 100,000+ | | [Aldi Süd](https://enrich.chat/company/aldi-s-d/) | Retail | 100,000+ | | [Alibaba Cloud](https://enrich.chat/company/alibaba-cloud/) | Information technology and services | 100,000+ | | [Amazon](https://enrich.chat/company/amazon/) | Information technology and services | 100,000+ | | [Ansell](https://enrich.chat/company/ansell/) | Mechanical or industrial engineering | 100,000+ | | [CVS Health](https://enrich.chat/company/cvs-health/) | Hospitals and health care | 100,000+ | | [Dunkin'​](https://enrich.chat/company/dunkin/) | Food and beverages | 100,000+ | | [EDF](https://enrich.chat/company/edf/) | Environmental services | 100,000+ | | [EMS](https://enrich.chat/company/ems/) | Pharmaceuticals | 100,000+ | | [Google](https://enrich.chat/company/google/) | Information technology and services | 100,000+ | | [Hilton Austin](https://enrich.chat/company/hilton-austin/) | Hospitality | 100,000+ | | [Honeywell International](https://enrich.chat/company/honeywell-international/) | Electrical and electronic manufacturing | 100,000+ | | [Kaiser Permanente](https://enrich.chat/company/kaiser-permanente/) | Hospitals and health care | 100,000+ | | [Kotak Securities](https://enrich.chat/company/kotak-securities/) | Capital markets | 100,000+ | | [Lidl in Germany](https://enrich.chat/company/lidl-in-germany/) | Retail | 100,000+ | | [Mahindra Group](https://enrich.chat/company/mahindra-group/) | Executive office | 100,000+ | | [Novartis](https://enrich.chat/company/novartis/) | Pharmaceuticals | 100,000+ | | [Peugeot](https://enrich.chat/company/peugeot/) | Automotive | 100,000+ | | [Providence Health & Services](https://enrich.chat/company/providence-health-and-services/) | Hospitals and health care | 100,000+ | | [PwC](https://enrich.chat/company/pwc/) | Professional training and coaching | 100,000+ | | [Starbucks](https://enrich.chat/company/starbucks/) | Retail | 100,000+ | | [Tech Mahindra](https://enrich.chat/company/tech-mahindra/) | Information technology and services | 100,000+ | | [Thermo Fisher Scientific](https://enrich.chat/company/thermo-fisher-scientific/) | Research | 100,000+ | | [Toyota North America](https://enrich.chat/company/toyota-north-america/) | Automotive | 100,000+ | | [Walgreens](https://enrich.chat/company/walgreens/) | Health, wellness and fitness | 100,000+ | | [Woolworths Group](https://enrich.chat/company/woolworths-group/) | Retail | 100,000+ | | [Woolworths Supermarkets](https://enrich.chat/company/woolworths-supermarkets/) | Retail | 100,000+ | | [YouTube](https://enrich.chat/company/youtube/) | Information technology and services | 100,000+ | ## Which industries use Open AdStream (AppNexus) most? The bars show, for each industry, the share of listed organizations where Open AdStream (AppNexus) was detected. **Figure: Where Open AdStream (AppNexus) shows up most often.** Bars for the share of organizations in each of 8 industries where Open AdStream (AppNexus) was detected, from Computer and network security at 32% down to Retail at 10%. *Share of listed organizations in each industry where Open AdStream (AppNexus) was detected.* ## Do larger companies use Open AdStream (AppNexus) more? For each size range, the column shows the share of listed organizations where Open AdStream (AppNexus) was detected. **Figure: Open AdStream (AppNexus) by company size.** Six columns, one per size range from 2,000 to over 100,000 employees, showing the share of organizations where Open AdStream (AppNexus) was detected: 2-5K 5%, 5-10K 6%, 10-25K 8%, 25-50K 10%, 50-100K 13%, 100K+ 13%. *Share of listed organizations in each size range where Open AdStream (AppNexus) was detected.* ## What tools go with Open AdStream (AppNexus)? Among the organizations that use Open AdStream (AppNexus), these tools stand out: each is detected more often alongside Open AdStream (AppNexus) than across all the organizations listed. The tick on each bar marks that wider average. **Figure: Tools that stand out among Open AdStream (AppNexus) users.** Bars for the share of Open AdStream (AppNexus) users that also use each tool, with a tick for the share across all listed organizations: AT Internet 22% against 4%, Salesforce Service Cloud 17% against 3%, TripleLift 14% against 2%, RTB House 14% against 2%, OpenX Ad Exchange 13% against 2%, Rubicon Project 12% against 2%, Flashtalking 10% against 2%, Krux (Salesforce DMP) 10% against 2%. *Share of organizations using Open AdStream (AppNexus) where each tool was also detected. The tick marks the share across all listed organizations.* [AT Internet](https://enrich.chat/companies-using/at-internet/)[Salesforce Service Cloud](https://enrich.chat/companies-using/salesforce-service-cloud/)[TripleLift](https://enrich.chat/companies-using/triplelift/)[RTB House](https://enrich.chat/companies-using/rtb-house/)[OpenX Ad Exchange](https://enrich.chat/companies-using/openx/)[Rubicon Project](https://enrich.chat/companies-using/rubicon-project/)[Flashtalking](https://enrich.chat/companies-using/flashtalking/)[Krux (Salesforce DMP)](https://enrich.chat/companies-using/krux/) ## Open AdStream (AppNexus) by industry Open an industry to see the organizations in it that use Open AdStream (AppNexus). [Information technology and services](https://enrich.chat/companies-using/open-adstream/information-technology-and-services/)[Retail](https://enrich.chat/companies-using/open-adstream/retail/)[Higher education](https://enrich.chat/companies-using/open-adstream/higher-education/)[Financial services](https://enrich.chat/companies-using/open-adstream/financial-services/)[Hospitals and health care](https://enrich.chat/companies-using/open-adstream/hospitals-and-health-care/) ## How do you reach the people who run Open AdStream (AppNexus)? The tool tells you what a company already runs; the people to talk to are usually advertising and paid media leaders. Pick an account from the table, then ask your AI agent for them. ```text Use www.enrich.chat to find the advertising and paid media leaders at [company], with titles and verified work emails ``` Check any other company with the free [tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/), or find a company's [email format](https://enrich.chat/tools/email-format-finder/). ## Frequently asked questions ### What companies use Open AdStream (AppNexus)? Organizations where Open AdStream (AppNexus) was detected include Amazon, Accenture, Starbucks, Walgreens and Google. The page lists a selection of larger ones with links to their profiles. ### Which industries use Open AdStream (AppNexus) most? Open AdStream (AppNexus) shows up most often in computer and network security, publishing and media production. ### How is Open AdStream (AppNexus) usage detected? From public signals: code and tags on a company's website, the HTTP headers its servers send, and DNS records. A detected tool shows it was seen, not what the company pays for it. ### Who should I contact at a company that uses Open AdStream (AppNexus)? Usually advertising and paid media leaders. Ask your AI agent to use www.enrich.chat to find people in those roles at the account, with verified work emails. ## Try this prompt Find the people who run Open AdStream (AppNexus) ```text Use www.enrich.chat to find the advertising and paid media leaders at [company], with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [Companies using Facebook Custom Audiences](https://enrich.chat/companies-using/facebook-custom-audiences/) - [Companies using DoubleClick](https://enrich.chat/companies-using/doubleclick/) - [Companies using Adobe Media Optimizer](https://enrich.chat/companies-using/adobe-media-optimizer/) - [Companies using DoubleClick Conversion Tracking](https://enrich.chat/companies-using/doubleclick-conversion/) - [Companies using Google Dynamic Remarketing](https://enrich.chat/companies-using/google-dynamic-remarketing/) - [Companies using LinkedIn Marketing Solutions](https://enrich.chat/companies-using/linkedin-marketing-solutions/) - [Companies using Google Ads Conversion Tracking](https://enrich.chat/companies-using/google-adwords-conversion/) - [Companies using DoubleClick Floodlight](https://enrich.chat/companies-using/doubleclick-floodlight/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)