Company lists · Data refreshed September 2026
Top 25 Data enrichment apis based in the United States
RevenueBase identified 88 data enrichment apis headquartered in the United States as of September 2026 and tracks 2,006 professional contacts across them, including 456 with verified work emails and 301 with mobile numbers. San Francisco is the largest hub.
This list covers data enrichment apis headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 3, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest data enrichment apis based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 424 | ||||
“LeadGenius helps B2B companies find and reach their next best customers.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 2 | 367 | ||||
“Lusha is the B2B data and sales intelligence system used by sales, marketing, recruiting, RevOps teams, and AI agents to find contacts, enrich records, and track real-world buying…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
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“RevenueBase is a B2B contact data platform. This directory is built from its company graph.” | |||||
| 3 | 159 | ||||
“eCore helps GTM teams fix the data problems that slow down sales, marketing, RevOps, and AI initiatives.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 4 | 114 | ||||
“DiscoverOrg helps go-to-market teams accelerate growth with the most accurate company and contact data on the market, and a suite of tools to ensure continued growth and success.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 5 | 79 | ||||
“CloudLead provides B2B Lead Generation & Data Enrichment services to our partners and clients.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 6 | 48 | ||||
“At Connectist, we specialize in providing high-quality contact data for decision-makers in companies worldwide.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 7 | 45 | ||||
“Not "yet another email & phone finder".” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 8 | 40 | ||||
“Woo is the Data Enrichment Engine for staffing and recruitment agencies.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 9 | 34 | ||||
“AI Ark is a B2B data platform built for sales teams and GTM agencies that need accurate, ready-to-use contact data - not stale CSV exports.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 10 | 31 | ||||
“DealSignal provides fresh, accurate, verified B2B data that helps sales & marketing teams maximize their efficiency, performance and results.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 11 | Lead ME MediaIndirect evidence | 30 | |||
“Rob Clouse, Founder of IMarketing Consultants and Lead Me Media started his career in digital marketing with eDirect in IMarketing Consultants which was sold to Come & Stay in…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 12 | TrestleStrong evidence | 30 | |||
“Trestle is a Bellevue, Washington–based technology company specializing in enterprise-grade identity data APIs for validation, verification, and enrichment.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 13 | 29 | ||||
“Identify, qualify, and enrich pipeline at scale.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 14 | reef.aiPartial evidence | 23 | |||
“Reef.ai is the data and intelligence foundation powering customer revenue-generating AI agents in the enterprise.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 15 | Zprecise LLCIndirect evidence | 18 | |||
“Z Precise enables business professionals to connect with their leads quickly and authentically, allowing them to expand their business 10x.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 16 | 15 | ||||
“RevenueBase provides the continuously refreshed, verified B2B data that AI agents need to operate reliably-with pricing that doesn’t punish high-volume usage.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 17 | 13 | ||||
“RampedUp is a trusted contact data solution for global marketers.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 18 | 13 | ||||
“Helping businesses find their ideal customers with validated emails.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 19 | 11 | ||||
“At Accurate Append – we live and breathe data.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 20 | 10 | ||||
“Freckle is the modern AI enrichment platform for HubSpot and Salesforce users.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 21 | 10 | ||||
“McGRAW is a leading provider of B2B and B2C data solutions, empowering businesses to drive growth through precise, accurate, and compliant data.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 22 | 10 | ||||
“BossLeads.com Top 5 Star Quality - Businesses today don’t always know why some data converts, or even if the list will return desired results.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 23 | 10 | ||||
“TechnologyCommand Data Solutions specializes in empowering your data and content with a high degree of quality and scope.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 24 | Salutary DataPartial evidence | 9 | |||
“Salutary Data is the leading provider of foundational data that drives the most advanced data platforms and products in the market.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 25 | 9 | ||||
“Abstract helps developers and companies build the best experience for their users by providing a suite of high-quality data APIs that can be used in any context.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 88 data enrichment apis based in the United States
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Data enrichment apis based in the United States at a glance
As of Sep 3, 2026Companies by employee count
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among data enrichment apis, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “data enrichment apis”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among data enrichment apis, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 456 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 3, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
How many data enrichment apis are there based in the United States?
RevenueBase identified 88 data enrichment apis headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Leadgenius, headquartered in Berkeley, tops this list with the largest team on record.
Which city has the most data enrichment apis?
San Francisco leads with 13 headquartered companies, followed by New York (6) and Atlanta (4).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 456 verified decision-maker contacts tracked across these 88 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 3, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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