Best for: ZoomInfo suits full-funnel GTM across sales, marketing, and ops. D&B Hoovers suits sales prospecting on the D&B Data Cloud.
Data: ZoomInfo has 500M contacts, 100M companies, and 200M+ verified business emails, with up to 95% first-party accuracy. D&B Hoovers is built on the D&B Data Cloud, with 330M+ companies and 520M+ contacts.
Pricing: D&B Hoovers offers a self-serve Essentials tier, and its full platform is quote-based. Start free on GTM.AI with consumption credits, or try the free trial.
AI: ZoomInfo Agent Teams in GTM Studio run on the GTM Context Graph. D&B Hoovers' product pages don't position an agent or MCP layer.
Fit: Teams can start with ZoomInfo Lite or a free trial. The full D&B Hoovers platform is custom-quoted and gated.
Proof: More than half of the Fortune 500 use ZoomInfo.
Both platforms sell B2B data to GTM teams. They differ in what each is built for, and how you pay.
An AI GTM platform that turns B2B intelligence into pipeline
500M contacts and 100M companies, plus intent and buying signals
Agents and Agent Teams for prospecting, enrichment and account research, with 50+ ready-made agents
GTM Workspace for sellers, GTM Studio for marketers and RevOps, plus conversation intelligence
API and MCP access, with SOC 2 Type II and ISO/IEC 42001-certified AI governance
Start free on GTM.AI and pay with consumption credits
Dun & Bradstreet's B2B sales intelligence platform, built on commercial data history
330M+ companies and 520M+ contacts on the D&B Data Cloud
Anchored on the D-U-N-S Number and corporate family-tree hierarchy
Essentials tier at $49/month; the full platform is custom-quoted and gated
Gartner reviewers flag data freshness concerns
No MCP access listed on its product pages
Compare ZoomInfo directly to D&B Hoovers from a high-level against core features.
Features |  |  |
|---|---|---|
Best for | Teams wanting data, intelligence, execution, and AI agents in one platform | Teams needing compliance-grade data, D-U-N-S hierarchy, or D&B ecosystem workflows |
Database scale | 330M+ companies, 520M+ contacts from a 600M+ business Data Cloud | |
Data accuracy | 95%+ first-party verified, backed by human validation | ~70% reported in Gartner reviews, including outdated or retired contacts |
Corporate hierarchy | Parent-child hierarchy and org charts | D-U-N-S-anchored family trees and Decision HQ, globally recognized |
Intent data | Native, with Guided Intent included on Advanced+ tiers. See our intent data platform guide | Three separate add-ons: Bombora, Custom Intent, Visitor Intelligence |
Native outbound | Built-in workflows, dialing, email, and Salesloft partnership | Email drafting only; no native outbound sequencing |
Conversation intelligence | Native conversation intelligence | Not included |
Pricing transparency | Start free on GTM.AI with consumption credits, or try the free trial. Flexible packages are also available | Essentials: $49/month or $529/year; Enterprise custom-quoted |
AI agents | Agent Teams in GTM Studio, with 50+ ready-made agents | Not positioned on D&B Hoovers product pages |
How you pay | Consumption credits through GTM.AI, with a free start or the free trial | Credit packages on Essentials; enterprise contracts custom-quoted |
APIs and MCP | APIs, CLI, and MCP through GTM.AI | No MCP access listed on product pages |
Corporate hierarchy and data accuracy are where D&B Hoovers and ZoomInfo differ most.
500M contacts and 100M companies, with B2B contact databases built for prospecting
Parent-child hierarchy and org charts
95%+ first-party accuracy, backed by human validation
330M+ companies and 520M+ contacts on the D&B Data Cloud
D-U-N-S Number and globally recognized family trees, built for compliance and credit
Gartner reviewers report outdated or retired contacts, with accuracy around 70% on records they attempted to reach
ZoomInfo's agents run on the GTM Context Graph, so they reason across verified data, CRM history, intent, and conversation signals together. With Agent Teams in GTM Studio, a supervisor agent coordinates specialist agents through a full play, from spotting a signal to outreach and CRM updates. Teams can start from 50+ ready-made agents or describe a play in plain English, and see a credit estimate before each play runs.
D&B Hoovers' product pages don't position an agent or MCP layer. Its strength is the D&B Data Cloud and the D-U-N-S identifier behind it.
D&B Hoovers' product pages don't position a conversation intelligence product, so there is no native call recording or transcript analysis to compare.
ZoomInfo includes conversation intelligence as a native, active product. It records, transcribes, and analyzes sales calls, surfacing deal risk signals, competitive mentions, and coaching opportunities from every customer conversation, and feeds those signals into the GTM Context Graph. When an AI agent in GTM Workspace recommends the next action for a deal, it draws on what was said in the last call, not just firmographic data about the account.
An all-in-one platform still has to connect to the rest of your stack, and to your AI tools.
ZoomInfo delivers the same data and intelligence wherever you work: in GTM Workspace or GTM Studio, inside Salesforce, HubSpot, and other native integrations, or headless through the API and MCP. The B2B data API and the ZoomInfo MCP server draw on the same verified data. ZoomInfo maintains ISO/IEC 27001, 27701, 27017 and 42001 certifications, SOC 2 Type II, the TRUSTe Responsible AI Certification, and TRUSTe GDPR and CCPA validations, published in its Trust Center.
D&B Hoovers connects to Salesforce through D&B Connect, which covers CRM data matching and enrichment. Its product pages don't list MCP access.
D&B Hoovers has self-serve entry pricing. Its full platform is quote-based. You can start ZoomInfo free on GTM.AI with consumption credits, or try the free trial.
Start free on GTM.AI with consumption credits, or try the free trial. No credit card needed.
Data credits pay for data. Each one enriches or exports a single company, contact or intent record.
AI credits pay for AI work, like account research and Agent Team plays.
ZoomInfo Lite is a free tier with no credit card and no commitment.
Essentials: $49/month for 150 company and 150 contact credits, or $529/year
The full enterprise platform is custom-quoted and gated
Intent data, the Salesforce integration, and vertical add-ons are negotiated on custom contracts
See the D&B Hoovers pricing guide
D&B Hoovers and ZoomInfo are often compared by teams evaluating corporate-hierarchy and compliance-grade data against a broader GTM platform. So what do the reviews say?
Users of ZoomInfo often praise it for the data coverage internationally. But as well as this, the general consensus among users is that ZoomInfo is also a more advanced product in terms of the use cases available.
You can leverage the GTM Context Graph, ZoomInfo's data foundation through GTM Workspace, GTM Studio, the headless layer (GTM.AI), or via your GTM tech stack integrations.
D&B Hoovers holds G2 Leader badges across Small Business, Mid-Market, and Asia/India regional segments, and TrustRadius named it a 2025 Buyer's Choice. The recurring theme in Gartner reviews, however, is data freshness: several reviewers cite outdated or retired contacts, with accuracy estimated around 70% on the records they attempted to reach. For more, see D&B Hoovers reviews and D&B Hoovers alternatives.
D&B Hoovers gives you data to research and build lists. ZoomInfo gives you the data, the intelligence layer, and the execution tools to act on it without switching platforms.
ZoomInfo's first-party data reaches 95%+ accuracy backed by human validation, versus the ~70% accuracy some Gartner reviewers report for D&B Hoovers, including outdated or retired contacts.
ZoomInfo's GTM Context Graph fuses your CRM, conversation transcripts, and behavioral signals so AI agents can draft outreach and prioritize next actions. D&B Hoovers hands data off to separate engagement tools.
ZoomInfo's native conversation intelligence captures and analyzes sales calls, feeding signals into the GTM Context Graph. D&B Hoovers does not position a conversation intelligence product.
Teams switch to ZoomInfo when they need more than enrichment. With stronger data, better workflows, and real results, it’s the clear choice for revenue teams ready to scale.
70% less inaccurate data. 1,100+ hours saved. $4.9M+ pipeline in two quarters.
With other providers, we weren't able to get the quality and quantity of data that we needed.
CEO and Co-Founder, Sendoso
39% of active pipeline from ZoomInfo signals. 54% more productive. 11.5 hours saved per week.
It's bringing data together faster than anyone could. It's both a time savings and a quality improvement.
Chief Business Officer, Seismic
monday.com scaled its ABM program 4X. 22 sales teams across 5 regions.
We can see everything in one place. We can see that the data is correct, understand the signals, and finally optimize our campaigns.
Strategic Demand & Lead Generation
2x higher new customer conversion. 90% higher opportunity open rates. 25% higher customer engagement.
They've done really a great job working with us to get us what we need.
Sales Data Science Manager, Snowflake
D&B Hoovers draws on Dun & Bradstreet commercial data, covering 330M+ companies and 520M+ contacts, but multiple Gartner reviewers flag data freshness and accuracy concerns, with some reporting accuracy around 70%, including outdated or retired contacts.
ZoomInfo's first-party verified data achieves 95%+ accuracy with human validation continuously updating 500M contacts, 200M+ verified emails, and 135M+ verified phone numbers. For sales teams where direct-dial accuracy drives connect rate, the verification depth is the deciding factor.
ZoomInfo includes several capabilities D&B Hoovers does not offer natively: native conversation intelligence, GTM Workspace with AI agents that draft emails, update CRM records, and prioritize next actions, GTM Studio for marketing and RevOps orchestration, native outbound sequencing via the Salesloft partnership, and the GTM Context Graph reasoning layer. D&B Hoovers is a research and list-building tool that hands data off to your other platforms.
D&B Hoovers is the right choice when your workflows depend on D-U-N-S Numbers for credit, procurement, or compliance verification; when you need corporate family tree mapping with globally recognized subsidiary identification; when you sell into healthcare or technology verticals and want D&B's pre-built vertical datasets; or when you need a self-serve SMB solution at $49 per month. ZoomInfo is the better fit when you need data, AI execution, conversation intelligence, and CRM automation in one platform.
Not for teams that need a full GTM execution platform. D&B Hoovers provides strong research and list-building capabilities anchored on D-U-N-S data, but its product pages don't position native outbound sequencing, conversation intelligence, AI agents, or a GTM Context Graph reasoning layer. Teams using D&B Hoovers for prospecting still need separate tools for outreach, call recording, CRM automation, and intent-driven prioritization.
Dun & Bradstreet's Data Cloud covers 330M+ companies and 520M+ contacts built on commercial data history, anchored on the D-U-N-S Number. ZoomInfo's B2B dataset covers 500M contacts, 100M companies, 135M+ verified phone numbers, 120M direct dials, and 200M+ verified business emails, with multi-source verification and human validation. The core difference is purpose: D&B data is optimized for compliance, credit, and commercial hierarchy mapping; ZoomInfo data is optimized for verified, actionable sales and marketing outreach.
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