# B2B contact databases: how to compare providers > B2B contact databases ยท Published 2026-08-27 by Hilead. Canonical HTML page: https://hilead.co/blog/b2b-contact-database-guide A B2B contact database is useful only when it returns the right decision-makers, in the markets you sell to, with contact details your team can actually use. The largest headline number rarely answers that question: some vendors count stored contacts, others describe searchable profile reach, and verified emails or mobiles may sit behind separate credits. This guide provides a practical framework for comparing coverage, accuracy, compliance, workflow, and total cost. ## 1. Start with your actual target market Define the countries, industries, company sizes, departments, seniorities, and special fields your team needs. A provider can have a huge global database and still perform poorly for finance leaders in France or operations executives at UK manufacturers. Turn your [ICP](https://hilead.co/blog/how-to-find-your-icp) into a fixed evaluation sample before looking at vendor totals. ## 2. Distinguish stored records from searchable reach A stored contact database, a company database, and access to a public professional network are different inventories. Ask what the published number counts, whether duplicate or inactive records are included, and which fields are actually available. Hilead's 1.3B figure is potential search reach across LinkedIn's published member universe, not 1.3B owned records with verified contact details. ## 3. Test email and phone coverage separately Do not accept one combined 'contact accuracy' percentage. Measure the proportion of your sample with a usable business email, verified email, direct dial, mobile, and correct current role. Phone-first teams may rationally prefer a smaller premium database with human-verified mobiles; email-first teams may get more value from a broader [enrichment waterfall](https://hilead.co/blog/email-enrichment-waterfall-vs-single-provider). ## 4. Measure accuracy on a blind sample Give every shortlisted provider the same representative accounts and contacts. Verify job status, company, email validity, phone connectivity, duplicates, and missing fields. Record correct, incorrect, stale, and unavailable results separately. Vendor-wide accuracy claims cannot substitute for match rate and usability inside your own market. ## 5. Inspect freshness and job-change handling B2B data decays whenever people change role, company, email, or territory. Ask how each field is sourced, how often it is refreshed, what triggers an update, and whether a redeemed contact consumes another credit after a career move. Freshness should be measured at field level: a current company record can still contain a former employee's phone number. ## 6. Evaluate compliance for the regions you contact Review sourcing, lawful basis, suppression handling, privacy requests, and Do-Not-Call screening with your legal team. A generic compliance badge does not answer whether mobile data is screened against the lists relevant to your markets or whether your planned outreach is permitted. The vendor supplies data and controls; your company remains responsible for how it uses them. ## 7. Calculate cost per usable contact Include platform fees, minimum seats, reveal and export credits, phone-verification charges, enrichment, API access, onboarding, and the separate tools needed to run outreach. Divide total cost by contacts that match the ICP and pass your usability checks. A cheap record that bounces or reaches the wrong person costs more than a premium record that starts a qualified conversation. ## 8. Compare the workflow after the record is found Decide whether you need a database feeding an existing CRM and sales-engagement stack or one product that also handles signals, enrichment, campaigns, and replies. Enterprise data platforms can be stronger for governance and large-scale enrichment. An integrated outbound workflow can be simpler for a lean team. Compare the operating models in the detailed [ZoomInfo](https://hilead.co/versus/zoominfo), [Cognism](https://hilead.co/versus/cognism), [Clay](https://hilead.co/versus/clay), [Lusha](https://hilead.co/versus/lusha), [Kaspr](https://hilead.co/versus/kaspr), [Seamless.AI](https://hilead.co/versus/seamless), [RocketReach](https://hilead.co/versus/rocketreach), [Waalaxy](https://hilead.co/versus/waalaxy), [La Growth Machine](https://hilead.co/versus/la-growth-machine), and [Expandi](https://hilead.co/versus/expandi) pages. ## Frequently asked questions ### What is a B2B contact database? It is a searchable collection of company and professional records used for prospecting, enrichment, market analysis, routing, and outreach. Depending on the provider, contact fields can include role, work email, direct dial, mobile, company details, technology, and buying signals. ### Which B2B database has the most contacts? Published totals are rarely like-for-like. Some count stored contacts, companies, verified emails, or searchable public profiles. Compare coverage and usable fields on your own ICP sample instead of choosing solely from the largest headline number. ### How do I test a B2B data provider? Create a blind sample across your main regions and segments, then measure current-role accuracy, email validity, phone connectivity, missing fields, duplicates, exportability, and cost per usable ICP-fit contact. Use the same sample for every vendor. ### Is it legal to use a B2B contact database? Legality depends on the jurisdiction, data source, lawful basis, outreach channel, suppression requirements, and your specific use. Review the vendor's controls and your intended workflow with qualified legal counsel; purchasing access does not transfer compliance responsibility. ## About Hilead Search profiles, enrich selected buyers, add buying signals, and move qualified contacts into outreach without rebuilding the workflow across separate tools. https://hilead.co/pricing.md lists what it costs.