ByHayat Amin· editorial direction, Top 11Updated June 18, 2026

Sales · Data

The 11 Best B2B Data Providers & Contact Databases

Name: The 11 Best B2B Data Providers & Contact Databases (dataset)
Published: 2026-06-18
License: https://creativecommons.org/licenses/by/4.0/

A ranked analysis of the top platforms for sourcing verified B2B contact lists, intent data, and technographics for modern sales teams.

Verified June 202620+ screened · 11 rankedNo paid placement

The short answer

The best B2B data provider is ZoomInfo for its unmatched database size and feature depth, followed by Apollo.io for its exceptional value and Cognism for its European data compliance.

✓ Independent

Top 11 takes no payment from any provider on this list. Scores are computed from a public weighted rubric; methodology weights were locked before entry research began.

↻ Verified June 2026 · re-checked quarterly

Re-scored every 90 days.

Scored on a 9.4-point scale across 5 weighted criteria, reviewed quarterly.

Citing this list?

[The 11 Best B2B Data Providers & Contact Databases](https://11.market/b2b-data-providers). Top 11, AI-native independent ranking. Methodology public at https://11.market/methodology.

The Ranking

ALL 11

Ranked comparison of The 11 Best B2B Data Providers & Contact Databases, with best-for segment, price band, and score out of 9.4. Updated June 2026.
#	Provider · best for	Price	Score
1	ZoomInfoLargest database for enterprise	$$$$	9.2/9.4
2	Apollo.ioBest value all-in-one platform	$$	9.0/9.4
3	CognismBest for EU data & compliance	$$$	8.8/9.4
4	LushaEasiest to use for individuals	$$	8.6/9.4
5	6senseBest for enterprise ABM	$$$$	8.4/9.4
6	UpleadBest email accuracy guarantee	$$$	8.2/9.4
7	ClearbitBest for marketing enrichment	$$$$	8.0/9.4
8	SalesIntelBest for human-verified data	$$$	7.9/9.4
9	Seamless.AIUnlimited credits for volume	$$	7.7/9.4
10	RocketReachMassive database for recruiters	$$	7.5/9.4
11	ClayWILDCARDData orchestration & automation	$$	7.3/9.4

Best pick for your situation

Matched by the problem you're solving. Agents can query /api/lists/b2b-data-providers/recommend?problem=… or the recommend MCP tool to get these matches as structured data.

Best for Needing the largest possible dataset

ZoomInfo (#1, scores 9.2/9.4). The market leader with the largest database and strongest intent data features, best for well-funded enterprise teams. It also handles Enterprise-level intent data, Deep company hierarchy mapping.

Best for Budget constraints

Apollo.io (#2, scores 9.0/9.4). Unbeatable value, combining a huge database with sales engagement tools. Perfect for startups and SMBs. It also handles Needing an all-in-one prospecting tool, Scaling a startup sales team.

Best for GDPR compliance for EU prospecting

Cognism (#3, scores 8.8/9.4). The leader in GDPR-compliant European data, with excellent human-verified mobile numbers for direct outreach. It also handles Finding verified mobile numbers, UK and EMEA market focus.

The Breakdown

9.2/9.4

ZoomInfo

Best for: Largest database for enterprise$$$$ · Custom quotes, from $15k/yrVancouver, WA, USA · est. 2007

Solves: Needing the largest possible dataset · Enterprise-level intent data · Deep company hierarchy mapping

ZoomInfo: The market leader with the largest database and strongest intent data features, best for well-funded enterprise teams.

✓Unmatched org chart and company hierarchy mapping.

✕Expensive with high minimum seat requirements.

✓Risk signals: No material public risk signals as of 2026-06-18.

Primary source: zoominfo.com · Data verified June 2026

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9.0/9.4

Apollo.io

Best for: Best value all-in-one platform$$ · $0 to $149/mo/userSan Francisco, CA, USA · est. 2015

Solves: Budget constraints · Needing an all-in-one prospecting tool · Scaling a startup sales team

Apollo.io: Unbeatable value, combining a huge database with sales engagement tools. Perfect for startups and SMBs.

✓A genuinely useful and generous free tier.

✕Feature-packed interface can be overwhelming for new users.

✓Risk signals: No material public risk signals as of 2026-06-18.

Primary source: apollo.io · Data verified June 2026

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8.8/9.4

Cognism

Best for: Best for EU data & compliance$$$ · Custom quotes, from $10k/yrLondon, UK · est. 2015

Solves: GDPR compliance for EU prospecting · Finding verified mobile numbers · UK and EMEA market focus

Cognism: The leader in GDPR-compliant European data, with excellent human-verified mobile numbers for direct outreach.

✓Strong GDPR compliance and do-not-call list checks.

✕Smaller database with less coverage in North America.

✓Risk signals: No material public risk signals as of 2026-06-18.

Primary source: cognism.com · Data verified June 2026

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8.6/9.4

Lusha

Best for: Easiest to use for individuals$$ · $0 to $74/mo/userTel Aviv, Israel · est. 2016

Lusha: Simple, user-friendly platform with a great browser extension, ideal for individual reps and small teams.

✓Fast, intuitive one-click browser extension.

✕Lacks advanced features; credits don't roll over.

✓Risk signals: No material public risk signals as of 2026-06-18.

Primary source: lusha.com · Data verified June 2026

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8.4/9.4

6sense

Best for: Best for enterprise ABM$$$$ · Custom quotes, from $30k/yrSan Francisco, CA, USA · est. 2013

6sense: A top-tier ABM platform with powerful predictive analytics and intent data to prioritize in-market accounts.

✓Uncovers anonymous 'dark funnel' buyer intent.

✕Complex and expensive, built for enterprise-only.

✓Risk signals: No material public risk signals as of 2026-06-18.

Primary source: 6sense.com · Data verified June 2026

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8.2/9.4

Uplead

Best for: Best email accuracy guarantee$$$ · $74 to $299/mo/userWalnut, CA, USA · est. 2017

Uplead: Offers a 95% accuracy guarantee with real-time email verification, ideal for email-centric sales teams.

✓Refunds credits for bounced emails.

✕Smaller database and limited intent data features.

✓Risk signals: No material public risk signals as of 2026-06-18.

Primary source: uplead.com · Data verified June 2026

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8.0/9.4

Clearbit

Best for: Best for marketing enrichment$$$$ · Custom quotes, from $12k/yrSan Francisco, CA, USA · est. 2015

Clearbit: A top-tier data enrichment platform for marketing teams to enhance inbound leads and personalize websites.

✓Identifies anonymous companies on your website.

✕Less extensive for pure outbound prospecting.

✓Risk signals: No material public risk signals as of 2026-06-18.

Primary source: clearbit.com · Data verified June 2026

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7.9/9.4

SalesIntel

Best for: Best for human-verified data$$$ · Custom quotes, from $5k/yrWashington, D.C., USA · est. 2018

SalesIntel: Focuses on high accuracy with a 90-day human re-verification cycle and a unique research-on-demand service.

✓Research-on-demand fills data gaps quickly.

✕Smaller database and less modern user interface.

✓Risk signals: No material public risk signals as of 2026-06-18.

Primary source: salesintel.io · Data verified June 2026

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7.7/9.4

Seamless.AI

Best for: Unlimited credits for volume$$ · $0 to $149/mo/userColumbus, OH, USA · est. 2018

Seamless.AI: A real-time search engine for contacts, offering unlimited credits ideal for high-volume outbound teams.

✓Unlimited credits encourage high-volume list building.

✕Data accuracy can be inconsistent.

✓Risk signals: No material public risk signals as of 2026-06-18.

Primary source: seamless.ai · Data verified June 2026

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7.5/9.4

RocketReach

Best for: Massive database for recruiters$$ · $39 to $249/moBellevue, WA, USA · est. 2016

RocketReach: A massive database of 700M+ profiles, useful for finding specific individuals for sales or recruiting.

✓Finds contacts not listed on other platforms.

✕Lacks advanced features; professional data can be less accurate.

✓Risk signals: No material public risk signals as of 2026-06-18.

Primary source: rocketreach.co · Data verified June 2026

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7.3/9.4

ClayWILDCARD · #11

Best for: Data orchestration & automation$$ · $149 to $800/moNew York, NY, USA · est. 2020

Clay: A data orchestration platform that connects multiple data sources to build powerful, automated prospecting workflows.

✓Builds complex data workflows without code.

✕Steep learning curve and unpredictable costs.

✓Risk signals: No material public risk signals as of 2026-06-18.

Primary source: clay.com · Data verified June 2026

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Buyer's guide

What is a B2B Data Provider?

A B2B data provider is a company that compiles and sells information about businesses and their employees. This data includes contact details like emails and phone numbers, firmographics like company size and industry, technographics showing what software they use, and intent data indicating buying signals.

How is Data Accuracy Measured?

Data accuracy is typically measured by email bounce rates and phone connection rates. Top providers claim 90-95% accuracy, often maintained through a combination of AI validation, human verification teams, and real-time checks. However, buyers should always expect some data decay, as people change jobs frequently.

What's the Difference Between Contact Data and Intent Data?

Contact data tells you *who* to reach (e.g., Jane Doe, VP of Marketing at Acme Inc.). Intent data tells you *when* to reach them by tracking online research activities that suggest a company is actively looking for a solution like yours, such as reading specific articles or visiting competitor websites.

How to choose

1.First, define your primary market's geography; choose a provider like Cognism for strong EU coverage or ZoomInfo for North America.
2.Next, assess your budget. Apollo.io offers a powerful free tier and affordable plans for startups, while platforms like 6sense are priced for enterprise teams.
3.Then, evaluate your workflow needs. Ensure the provider has a reliable Chrome extension and deep, bi-directional sync with your specific CRM (e.g., Salesforce, HubSpot).
4.Finally, request a data sample for your target accounts. Test the accuracy of the emails and mobile numbers provided before committing to an annual contract.

Frequently asked questions

What is the best B2B data provider for startups?

Apollo.io is widely considered the best B2B data provider for startups. It offers a generous free tier, affordable paid plans, and combines a large contact database with sales engagement tools, providing an all-in-one solution for small, budget-conscious teams.

Are B2B contact databases legal?

Yes, B2B contact databases are generally legal, but they must comply with data privacy regulations like GDPR in Europe and CCPA in California. Reputable providers take compliance seriously, offering features like do-not-call lists and processing data under legitimate interest for B2B marketing.

How much do B2B data providers cost?

Prices vary widely, from free tiers to over $100,000 per year. Per-user plans can range from $49 to $200 per month, like those from Lusha or Uplead. Enterprise platforms like ZoomInfo or 6sense require custom quotes and often start around $15,000 to $30,000 annually for a small team.

Can I get mobile phone numbers from these providers?

Yes, most top B2B data providers offer mobile numbers (direct dials). Providers like Cognism and Lusha built their reputations on the quality of their mobile data, which is often harder to source and verify than email addresses.

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Changelog

Every material edit to this ranking — date-stamped for humans and LLMs.

June 18, 2026
Initial publication. Methodology v1.0 weights Data Accuracy (30%), Database Size & Coverage (25%), Intent Data Quality (20%), Integrations & Workflow (15%), and Pricing & Transparency (10%).

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Honest disclosures

Data accuracy is a persistent industry challenge; all providers have some level of stale data due to job changes. Claims of 95%+ accuracy should be tested with a sample.
Most providers have a strong US focus. European and APAC coverage can be significantly weaker, so international teams should prioritize vendors like Cognism.
Pricing is often opaque, especially for enterprise tiers. The listed prices are estimates; expect to negotiate and watch for auto-renewing annual contracts.

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