Companies / Listar / Subprocessors
Listar provides a ChatGPT plugin and browser extension that find and verify professional emails and mobile numbers for companies and decision-makers. It serves sales teams and businesses looking to build targeted prospect lists from criteria such as industry, size and region.
Summarized from its homepage on 12 Nov 2026.
4 square Rapp, Paris, 75007, FR
Subprocessors of Listar
Listar declares 9 subprocessors, including AI providers Anthropic.
From the company's own list.Read the source
| Subprocessor | Purpose |
|---|---|
| Hosting of Listar's technical infrastructure (servers, storage), in the AWS Paris region (eu-west-3). | |
| AI models that run Listar AI and analyze some searches. | |
| Login via Google Sign-In. | |
| Hosting of the search index of the professional data used for enrichment. | |
| Sending transactional emails: signup confirmation, password reset, invoices. | |
| Measurement of the performance of our Meta ads through the server-side Conversions API: sign-up, first usage and credit purchases. | |
| Listar's application database (accounts, searches, lists, results), hosted in the AWS Paris region (eu-west-3). | |
| Secure card-payment processing and invoicing of credit top-ups. | |
| proxycheck.io | Check of the sign-up IP address, to detect the VPNs and proxies used to abuse the credits granted at sign-up. |
Questions about Listar
Vendor's own statement, retrieved from the source URL on the date shown. StrataDB does not verify the underlying claim. Data sources.
See Listar's full stack
Every vendor with its source and date, and an alert when Listar adds or drops one. The same lookup works for any company.
- Every company and vendor, with its public source
- 100 API calls a month, plus MCP and the Chrome extension
- Work email only. No card, no sales call