Company lists · Data refreshed November 2026
Top 25 Contact data apis worldwide
RevenueBase identified 251 company matches for contact data apis worldwide as of November 2026 and tracks 4,113 professional contacts across them, including 1,120 with verified work emails. The United States is the largest market and New York the largest hub.
This list covers company matches for contact data apis worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 4, 2026. Country and city lists for contact data apis follow the table.
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 contact data apis worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 498 contacts → | ||||
Exact match “Cognism provides accurate, compliant-first B2B data and sales intelligence for teams growing across Europe and beyond.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase | |||||
| 2 | 445 contacts → | ||||
Exact match “LeadGenius helps B2B companies find and reach their next best customers.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase | |||||
| Try free | |||||
Not rated “RevenueBase is a B2B contact data platform. This directory is built from its company graph.” | |||||
| 3 | 348 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase | |||||
| 4 | 179 contacts → | ||||
Exact match “Supercharge Your Success with InFynd!” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase | |||||
| 5 | 144 contacts → | ||||
Exact match “eCore provides a validation-first data quality layer for GTM teams, cleaning, validating, enriching and monitoring contact and account CRM data so sales, marketing, RevOps and AI…” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase | |||||
| 6 | 110 contacts → | ||||
Exact match “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.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase | |||||
| 7 | 96 contacts → | ||||
Exact match “At ContactOut, we pride ourselves on being the most accurate contact data intelligence tool out there.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase | |||||
| 8 | 86 contacts → | ||||
Exact match “RocketReach is an intuitive and easy-to-use lead intelligence and sales intelligence solution that is powered by the largest and most accurate contact database on this planet.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase | |||||
| 9 | 84 contacts → | ||||
Exact match “Whitepages is the trusted source for identity data and property intelligence, bringing together publicly available information to help millions of monthly users in the U.S.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase | |||||
| 10 | 65 contacts → | ||||
Exact match “HF Labs», LLC, is a Russian company that was found in the beginning of the year 2005, aiming at software development and service provision of the highest quality in the sphere of…” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase | |||||
| 11 | 64 contacts → | ||||
Exact match “GBG Loqate is a trusted data specialist for businesses of all sizes and sectors.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase | |||||
| 12 | 64 contacts → | ||||
Exact match “Bouncer is a company that provides powerful and affordable email list verification and email validation.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase | |||||
| 13 | 63 contacts → | ||||
Exact match “Not "yet another email & phone finder".” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase | |||||
| 14 | 62 contacts → | ||||
Exact match “Markaaz is the leading global business identity and intelligence platform, connecting verified businesses through superior data, advanced technology, and a trusted global network.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase | |||||
| 15 | 42 contacts → | ||||
Exact match “Trestle is a Bellevue, Washington–based technology company specializing in enterprise-grade identity data APIs for validation, verification, and enrichment.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase | |||||
| 16 | 42 contacts → | ||||
Exact match “ListKit is a leading B2B Data Provider that helps businesses build hyper-targeted contact lists without the need for manual verification.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase | |||||
| 17 | 41 contacts → | ||||
Exact match “Wiza makes prospecting magical.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase | |||||
| 18 | 40 contacts → | ||||
Exact match “Profinder is an online consumer and business contact search platform, for prospecting and targeting advertising and sales.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase | |||||
| 19 | 37 contacts → | ||||
Exact match “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.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase | |||||
| 20 | 34 contacts → | ||||
Exact match “EGON is an international Data Quality solution focused on address validation and geocoding that relies on a skilled staff who boast more than 30 years of experience in data…” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase | |||||
| 21 | 32 contacts → | ||||
Exact match “Adapt is a global B2B account intelligence provider with users and 61M+ high-quality business contacts.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase | |||||
| 22 | 30 contacts → | ||||
Exact match “AeroLeads provides B2B contact data with business emails, phone numbers, people data, and company data.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase | |||||
| 23 | 26 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase | |||||
| 24 | 23 contacts → | ||||
Exact match “Businesses look to Service Objects when they want to be sure every contact record in every database is as genuine, accurate, and up-to-date as it possibly can be.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase | |||||
| 25 | 23 contacts → | ||||
Exact match “Grow your business & land your perfect customers by prompting in Origami.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “contact data apis”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 251 contact data apis worldwide
See the full list, filter by size, metro and specialty, and access 1,120 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Contact data apis worldwide at a glance
As of Nov 4, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- 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.
- Coverage
- Every country. Country and city lists for contact data apis are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “contact data apis” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- 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 displayed company carries at least one verified work email. RevenueBase tracks 1,120 professional contacts with verified work emails across the full matched dataset. 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 November 4, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Contact data apis by location
1 lists · largest firstEvery Contact data apis list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “contact data apis”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many contact data apis are there worldwide?
RevenueBase identified 251 company matches for contact data apis worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Cognism tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most contact data apis?
The United States leads with 103 companies. Every contact data apis list by country and city is linked on this page.
Which city has the most contact data apis?
New York leads with 12 company records, followed by San Francisco (10) and London (9).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,120 professional contacts with verified work emails tracked across these 251 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 4, 2026.
Ready to reach these companies? Verified emails and direct dials for all 251 contact data apis worldwide. Start with a free account, no credit card.
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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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- B2B demand generation agencies based in the United States
- instantly lookalikes
- Account based marketing agencies based in the United States
- Account based marketing agencies based in the United Kingdom
- Account based marketing agencies based in Brazil
- Account based marketing agencies based in Canada
Company intelligence · public preview
Top 25 contact data apis worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 251 matching company records for contact data apis worldwide, with 4,113 tracked contacts and 1,120 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 4, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 contact data apis worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Cognismcognism.comHQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 498 contacts → |
“Cognism provides accurate, compliant-first B2B data and sales intelligence for teams growing across Europe and beyond.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Leadgeniusleadgenius.comHQ: Berkeley, CA, United StatesReported employees: 201-500 | Berkeley, CA, United States | 201-500 | Exact match | 445 contacts → |
“LeadGenius helps B2B companies find and reach their next best customers.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| Boston, MA, United States | n/a | Publisher disclosure | Try free | ||
Publisher disclosure “RevenueBase is a B2B contact data platform. This directory is built from its company graph.” | |||||
| 3 |  LUSHAlusha.comHQ: Boston, MA, United StatesReported employees: 201-500 | Boston, MA, United States | 201-500 | Exact match | 348 contacts → |
“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…” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Infyndinfynd.comHQ: Bracknell, United KingdomReported employees: 51-200 | Bracknell, United Kingdom | 51-200 | Exact match | 179 contacts → |
“Supercharge Your Success with InFynd!” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  ECOREecoreservice.comHQ: Pittsburgh, PA, United StatesReported employees: 51-200 | Pittsburgh, PA, United States | 51-200 | Exact match | 144 contacts → |
“eCore provides a validation-first data quality layer for GTM teams, cleaning, validating, enriching and monitoring contact and account CRM data so sales, marketing, RevOps and AI…” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Discoverorgdiscoverorg.comHQ: Vancouver, WA, United StatesReported employees: 501-1,000 | Vancouver, WA, United States | 501-1,000 | Exact match | 110 contacts → |
“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.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Contactoutcontactout.comHQ: San Francisco, United StatesReported employees: 51-200 | San Francisco, United States | 51-200 | Exact match | 96 contacts → |
“At ContactOut, we pride ourselves on being the most accurate contact data intelligence tool out there.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Rocketreachrocketreach.coHQ: Brooklyn, United StatesReported employees: 51-200 | Brooklyn, United States | 51-200 | Exact match | 86 contacts → |
“RocketReach is an intuitive and easy-to-use lead intelligence and sales intelligence solution that is powered by the largest and most accurate contact database on this planet.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Whitepageswhitepages.comHQ: Seattle, WA, United StatesReported employees: 11-50 | Seattle, WA, United States | 11-50 | Exact match | 84 contacts → |
“Whitepages is the trusted source for identity data and property intelligence, bringing together publicly available information to help millions of monthly users in the U.S.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Hflabshflabs.ruHQ: Moscow, RussiaReported employees: 51-200 | Moscow, Russia | 51-200 | Exact match | 65 contacts → |
“HF Labs», LLC, is a Russian company that was found in the beginning of the year 2005, aiming at software development and service provision of the highest quality in the sphere of…” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  GBG Loqateloqate.comHQ: Worcester, United KingdomReported employees: 501-1,000 | Worcester, United Kingdom | 501-1,000 | Exact match | 64 contacts → |
“GBG Loqate is a trusted data specialist for businesses of all sizes and sectors.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Bouncerusebouncer.comHQ: Wroclaw, PolandReported employees: Not recorded | Wroclaw, Poland | Not recorded | Exact match | 64 contacts → |
“Bouncer is a company that provides powerful and affordable email list verification and email validation.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Fullenrichfullenrich.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 63 contacts → |
“Not "yet another email & phone finder".” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Markaazmarkaaz.comHQ: Austin, TX, United StatesReported employees: 51-200 | Austin, TX, United States | 51-200 | Exact match | 62 contacts → |
“Markaaz is the leading global business identity and intelligence platform, connecting verified businesses through superior data, advanced technology, and a trusted global network.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Trestletrestleiq.comHQ: Bellevue, WA, United StatesReported employees: 11-50 | Bellevue, WA, United States | 11-50 | Exact match | 42 contacts → |
“Trestle is a Bellevue, Washington–based technology company specializing in enterprise-grade identity data APIs for validation, verification, and enrichment.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Listkitlistkit.ioHQ: Tampa, FL, United StatesReported employees: 11-50 | Tampa, FL, United States | 11-50 | Exact match | 42 contacts → |
“ListKit is a leading B2B Data Provider that helps businesses build hyper-targeted contact lists without the need for manual verification.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  WIZAwiza.coHQ: Newark, DE, United StatesReported employees: 11-50 | Newark, DE, United States | 11-50 | Exact match | 41 contacts → |
“Wiza makes prospecting magical.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Profinderprofinder.fiHQ: Helsinki, FinlandReported employees: 11-50 | Helsinki, Finland | 11-50 | Exact match | 40 contacts → |
“Profinder is an online consumer and business contact search platform, for prospecting and targeting advertising and sales.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  AI ARKai-ark.comHQ: San Francisco, United StatesReported employees: 11-50 | San Francisco, United States | 11-50 | Exact match | 37 contacts → |
“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.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  EGONegon.comHQ: Verona, ItalyReported employees: 11-50 | Verona, Italy | 11-50 | Exact match | 34 contacts → |
“EGON is an international Data Quality solution focused on address validation and geocoding that relies on a skilled staff who boast more than 30 years of experience in data…” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  adapt.ioadapt.ioHQ: Coimbatore, IndiaReported employees: 11-50 | Coimbatore, India | 11-50 | Exact match | 32 contacts → |
“Adapt is a global B2B account intelligence provider with users and 61M+ high-quality business contacts.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Aeroleadsaeroleads.comHQ: San Francisco, United StatesReported employees: 11-50 | San Francisco, United States | 11-50 | Exact match | 30 contacts → |
“AeroLeads provides B2B contact data with business emails, phone numbers, people data, and company data.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  KASPRkaspr.ioHQ: Paris, FranceReported employees: 11-50 | Paris, France | 11-50 | Exact match | 26 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 24 |  Service Objectsserviceobjects.comHQ: Santa Barbara, CA, United StatesReported employees: 11-50 | Santa Barbara, CA, United States | 11-50 | Exact match | 23 contacts → |
“Businesses look to Service Objects when they want to be sure every contact record in every database is as genuine, accurate, and up-to-date as it possibly can be.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Origamiorigami.chatHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 23 contacts → |
“Grow your business & land your perfect customers by prompting in Origami.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 251 company matches
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Contact data apis: dataset insights
November 4, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
251 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 251 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 4, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Contact data apis by location
1 lists · largest firstEvery Contact data apis list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for contact data apis?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many contact data apis did RevenueBase find worldwide?
The saved snapshot records 251 matching company records, 4,113 tracked contacts and 1,120 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 4, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 contact data apis worldwide. Snapshot: November 4, 2026. https://revenuebase.ai/companies/browse/contact-data-apis.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- B2B demand generation agencies based in the United States
- instantly lookalikes
- Account based marketing agencies based in the United States
- Account based marketing agencies based in the United Kingdom
- Account based marketing agencies based in Brazil
- Account based marketing agencies based in Canada
Company intelligence · public preview
Top 25 contact data apis worldwide
RevenueBase records 251 matching company records for contact data apis worldwide, with 4,113 tracked contacts and 1,120 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 4, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 contact data apis worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Cognismcognism.com HQ: London, United KingdomReported employees: 201-500 | London, United Kingdom | 201-500 | Exact match | 498 contacts → |
“Cognism provides accurate, compliant-first B2B data and sales intelligence for teams growing across Europe and beyond.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Leadgeniusleadgenius.com HQ: Berkeley, CA, United StatesReported employees: 201-500 | Berkeley, CA, United States | 201-500 | Exact match | 445 contacts → |
“LeadGenius helps B2B companies find and reach their next best customers.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| Boston, MA, United States | n/a | Publisher disclosure | Try free | ||
Publisher disclosure “RevenueBase is a B2B contact data platform. This directory is built from its company graph.” | |||||
| 3 | LUSHAlusha.com HQ: Boston, MA, United StatesReported employees: 201-500 | Boston, MA, United States | 201-500 | Exact match | 348 contacts → |
“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…” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Infyndinfynd.com HQ: Bracknell, United KingdomReported employees: 51-200 | Bracknell, United Kingdom | 51-200 | Exact match | 179 contacts → |
“Supercharge Your Success with InFynd!” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | ECOREecoreservice.com HQ: Pittsburgh, PA, United StatesReported employees: 51-200 | Pittsburgh, PA, United States | 51-200 | Exact match | 144 contacts → |
“eCore provides a validation-first data quality layer for GTM teams, cleaning, validating, enriching and monitoring contact and account CRM data so sales, marketing, RevOps and AI…” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Discoverorgdiscoverorg.com HQ: Vancouver, WA, United StatesReported employees: 501-1,000 | Vancouver, WA, United States | 501-1,000 | Exact match | 110 contacts → |
“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.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Contactoutcontactout.com HQ: San Francisco, United StatesReported employees: 51-200 | San Francisco, United States | 51-200 | Exact match | 96 contacts → |
“At ContactOut, we pride ourselves on being the most accurate contact data intelligence tool out there.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Rocketreachrocketreach.co HQ: Brooklyn, United StatesReported employees: 51-200 | Brooklyn, United States | 51-200 | Exact match | 86 contacts → |
“RocketReach is an intuitive and easy-to-use lead intelligence and sales intelligence solution that is powered by the largest and most accurate contact database on this planet.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Whitepageswhitepages.com HQ: Seattle, WA, United StatesReported employees: 11-50 | Seattle, WA, United States | 11-50 | Exact match | 84 contacts → |
“Whitepages is the trusted source for identity data and property intelligence, bringing together publicly available information to help millions of monthly users in the U.S.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Hflabshflabs.ru HQ: Moscow, RussiaReported employees: 51-200 | Moscow, Russia | 51-200 | Exact match | 65 contacts → |
“HF Labs», LLC, is a Russian company that was found in the beginning of the year 2005, aiming at software development and service provision of the highest quality in the sphere of…” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | GBG Loqateloqate.com HQ: Worcester, United KingdomReported employees: 501-1,000 | Worcester, United Kingdom | 501-1,000 | Exact match | 64 contacts → |
“GBG Loqate is a trusted data specialist for businesses of all sizes and sectors.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Bouncerusebouncer.com HQ: Wroclaw, PolandReported employees: Not recorded | Wroclaw, Poland | Not recorded | Exact match | 64 contacts → |
“Bouncer is a company that provides powerful and affordable email list verification and email validation.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Fullenrichfullenrich.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 63 contacts → |
“Not "yet another email & phone finder".” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Markaazmarkaaz.com HQ: Austin, TX, United StatesReported employees: 51-200 | Austin, TX, United States | 51-200 | Exact match | 62 contacts → |
“Markaaz is the leading global business identity and intelligence platform, connecting verified businesses through superior data, advanced technology, and a trusted global network.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Trestletrestleiq.com HQ: Bellevue, WA, United StatesReported employees: 11-50 | Bellevue, WA, United States | 11-50 | Exact match | 42 contacts → |
“Trestle is a Bellevue, Washington–based technology company specializing in enterprise-grade identity data APIs for validation, verification, and enrichment.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Listkitlistkit.io HQ: Tampa, FL, United StatesReported employees: 11-50 | Tampa, FL, United States | 11-50 | Exact match | 42 contacts → |
“ListKit is a leading B2B Data Provider that helps businesses build hyper-targeted contact lists without the need for manual verification.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | WIZAwiza.co HQ: Newark, DE, United StatesReported employees: 11-50 | Newark, DE, United States | 11-50 | Exact match | 41 contacts → |
“Wiza makes prospecting magical.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Profinderprofinder.fi HQ: Helsinki, FinlandReported employees: 11-50 | Helsinki, Finland | 11-50 | Exact match | 40 contacts → |
“Profinder is an online consumer and business contact search platform, for prospecting and targeting advertising and sales.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | AI ARKai-ark.com HQ: San Francisco, United StatesReported employees: 11-50 | San Francisco, United States | 11-50 | Exact match | 37 contacts → |
“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.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | EGONegon.com HQ: Verona, ItalyReported employees: 11-50 | Verona, Italy | 11-50 | Exact match | 34 contacts → |
“EGON is an international Data Quality solution focused on address validation and geocoding that relies on a skilled staff who boast more than 30 years of experience in data…” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | adapt.ioadapt.io HQ: Coimbatore, IndiaReported employees: 11-50 | Coimbatore, India | 11-50 | Exact match | 32 contacts → |
“Adapt is a global B2B account intelligence provider with users and 61M+ high-quality business contacts.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Aeroleadsaeroleads.com HQ: San Francisco, United StatesReported employees: 11-50 | San Francisco, United States | 11-50 | Exact match | 30 contacts → |
“AeroLeads provides B2B contact data with business emails, phone numbers, people data, and company data.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | KASPRkaspr.io HQ: Paris, FranceReported employees: 11-50 | Paris, France | 11-50 | Exact match | 26 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 24 | Service Objectsserviceobjects.com HQ: Santa Barbara, CA, United StatesReported employees: 11-50 | Santa Barbara, CA, United States | 11-50 | Exact match | 23 contacts → |
“Businesses look to Service Objects when they want to be sure every contact record in every database is as genuine, accurate, and up-to-date as it possibly can be.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Origamiorigami.chat HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 23 contacts → |
“Grow your business & land your perfect customers by prompting in Origami.” Recorded description excerpt · November 4, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 251 company matches
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Contact data apis: dataset insights
November 4, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
251 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 251 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 4, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Contact data apis by location
1 lists · largest firstEvery Contact data apis list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for contact data apis?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many contact data apis did RevenueBase find worldwide?
The saved snapshot records 251 matching company records, 4,113 tracked contacts and 1,120 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 4, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 contact data apis worldwide. Snapshot: November 4, 2026. https://revenuebase.ai/companies/browse/contact-data-apis.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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