ZoomInfo shows the company. Knock2 reveals the buyer.

The 93%* figure refers to account-level identification on engaged sessions (Google Analytics defines an engaged session as 10 seconds or more, or 2+ pageviews). The 62%* figure is for person-level identification on US traffic, measured the same way. We publish both numbers because they answer different questions: which companies are on my site, and which individuals can I reach out to.

They serve different parts of the stack. ZoomInfo is a static B2B contact database — your reps search for companies or personas and buy contact records. Knock2 surfaces the specific people from specific companies who are on your website right now, with real-time intent signal attached.

The practical difference: ZoomInfo tells you who exists in the world. Knock2 tells you who is actively in-market and researching your product this week. Many teams use both — ZoomInfo for outbound prospecting at cold accounts, Knock2 for prioritizing warm ones.

Pricing is also very different. ZoomInfo is typically per-seat and often starts in the tens of thousands annually. Knock2 starts at $199/month with no per-seat fees.

Knock2 uses device fingerprinting combined with an identity graph built from consented publisher login data. When someone logs into a major publisher site, their identity is tied to their device. When that same device later visits your site, our pixel matches it back to the person. It's the same underlying technology that powers retargeting pixels from Meta, Google, and LinkedIn.

Account-level identification tells you which company a visitor is from. Person-level identification tells you exactly who the individual is: name, title, work email, phone, and LinkedIn profile. Person-level data is only available for US traffic due to privacy regulations in other regions.

Yes. Native integrations are built for HubSpot, Salesforce, Slack, Apollo, Outreach, Lemlist, Instantly, and Clay. For anything not on that list, webhooks cover Zapier, Make, n8n, and any other tool that accepts them.

Yes. Knock2 uses the same underlying technology as ad retargeting pixels from Meta, Google, and LinkedIn. Our data comes from consented publisher login co-ops, tying identity to an anonymous device fingerprint. There are no cookies involved, so cookie consent requirements don't apply. Knock2 is SOC 2 compliant.

Plans start at $199/month (Startup) and scale with included credits. Identifying an account costs 1 credit, identifying a person costs 6 credits, and prospecting additional contacts at an account costs 3 credits. Most teams land on Growth ($499) or Scale ($999). No per-seat fees. Every plan includes a 7-day free trial.