8 Best B2B Databases for Spain in 2026 (Iberian Market Deep Dive)

TL;DR

• Best for GDPR-compliant Spanish mobile data: Cognism — phone-verified contacts with strong AEPD compliance posture
• Best for signal-driven outreach: SyncGTM — waterfall enrichment plus buying signals across your Spanish target accounts
• Best free tier entry: Apollo.io — broad Spanish coverage with free plan for testing
• Best for email discovery: Hunter.io — domain-based pattern mapping for Spanish company domains
• Best enterprise option: ZoomInfo — global scale including Spanish enterprise; expensive for Spain-only GTM
• Best for company enrichment: Clearbit — firmographic depth for Spanish company records
• Best budget option: Adapt.io — affordable Spanish B2B contacts for cost-conscious teams
• Best for quick LinkedIn lookups: Lusha — Chrome extension for ad-hoc Spanish contact research

Why Spanish B2B Data Is Complex

Spain has the fourth-largest economy in the EU, but its B2B data landscape is fragmented in ways that catch global providers off guard. The Registro Mercantil (commercial registry) is the authoritative source for Spanish company information — including NIF/CIF tax identifiers — but it operates at both national and provincial levels, creating a distributed structure that global databases often index incompletely.

The SME segment is the other complicating factor. Spain has a very large autónomo (self-employed) population — many of whom operate as registered businesses — alongside a significant SME economy. These smaller entities are systematically undercovered by US-built global databases that prioritize enterprise and mid-market accounts.

AEPD compliance adds a third layer of complexity. Spain's data protection authority is among the most active GDPR enforcers in Europe, issuing more fines than most EU peers. Any B2B outreach into Spain needs a clearly documented legitimate interest basis, and providers who don't take European compliance seriously create meaningful legal risk for their customers.

1. SyncGTM

SyncGTM is the strongest option for GTM teams targeting Spain who need both data quality and outreach timing intelligence. Waterfall enrichment cascades across 50+ providers — including Iberian-specific sources — to maximize contact fill rates for Spanish companies. When one provider misses a mobile number or email, the next in the cascade is tried automatically.

The buying signals layer is what separates SyncGTM from static data providers. SyncGTM monitors your Spanish target accounts for funding rounds, hiring surges, leadership changes, and technology adoption signals — so your outreach lands when the account is actively evaluating solutions, not 90 days after they've already made a decision.

For Spain specifically, the GDPR-compliant data sourcing means your outreach sequences are built on a defensible legal basis — critical given AEPD's enforcement track record.

• Waterfall enrichment across 50+ providers for higher Spanish contact fill rates
• Buying signal monitoring: funding, hiring, leadership changes across target accounts
• Native HubSpot and Salesforce integration
• GDPR-compliant data sourcing
• Free tier available — no credit card required
• Starting price: $99/mo

2. Apollo.io

Apollo.io offers the broadest Spanish contact coverage among globally accessible databases. Madrid, Barcelona, and Valencia enterprise and mid-market accounts are reasonably well represented; the free plan gives teams a low-risk way to validate Spanish contact quality before committing budget.

The gaps are predictable: SME direct dials and mobile numbers for Spanish contacts are thinner than Apollo's US coverage. For enterprise-focused Spain outreach, Apollo is a solid anchor; for SME-heavy lists, pair it with a European-specialist provider via waterfall enrichment.

• Broad Spanish coverage — Madrid, Barcelona, Valencia enterprise accounts
• Free plan with 50 email credits/mo
• Built-in sequence automation
• SME direct dial coverage weaker than European-specialist providers
• Starting price: $49/mo

3. Cognism

Cognism is the European B2B database with the strongest compliance posture — and for Spain, that matters. Phone-verified mobile numbers and a documented GDPR legitimate interest basis make Cognism the safest choice for Spanish cold outreach from a regulatory standpoint.

Spanish mobile number hit rates through Cognism are consistently better than US-built databases. The trade-off is pricing — Cognism is custom-quoted and positioned for mid-market and enterprise buyers — and coverage depth outside major Spanish cities.

• Phone-verified mobile numbers for Spanish contacts
• GDPR-compliant data with documented legitimate interest basis
• Strong AEPD compliance posture — critical for Spain outreach
• Best Spanish mobile number accuracy of the European-specialist providers
• Starting price: Custom — contact for pricing

4. ZoomInfo

ZoomInfo has Spanish company and contact records, but Spanish coverage is not a differentiator at the price point. Enterprise accounts in Madrid's financial district and Barcelona's tech corridor are reasonably covered; SME contacts and autónomos are sparse.

ZoomInfo makes strategic sense for enterprise GTM teams who need Spain as one region within a broader global database — not for teams whose primary market is Spain. The $15k+/yr pricing is difficult to justify against local or European specialists for a Spain-focused use case.

• Largest global B2B database — Spanish enterprise records included
• Intent data via Bombora integration
• Enterprise contracts — minimum ~$15k/yr
• Spanish SME and autónomo coverage very thin
• Starting price: $15k+/yr

5. Lusha

Lusha works well for individual SDRs doing ad-hoc LinkedIn research on Spanish prospects. The Chrome extension surfaces contact details directly on LinkedIn profiles — useful for researching specific decision-makers at target Spanish accounts.

For systematic Spanish list-building, Lusha's per-credit model becomes expensive quickly and its Spanish mobile hit rates are variable. It is better positioned as a supplemental lookup tool than a primary Spanish market database.

• Chrome extension for real-time LinkedIn contact lookups
• Free tier: 50 credits/mo
• Spanish mobile numbers variable — not optimized for Iberian market
• Better for ad-hoc research than bulk Spanish list building
• Starting price: $49/mo

6. Clearbit

Clearbit (now part of HubSpot) is strongest as a firmographic enrichment layer rather than a prospecting database. For Spanish company records — industry classification, employee count, technology stack, and company description — Clearbit adds meaningful depth to accounts you've already identified.

For building net-new Spanish contact lists or sourcing direct dials, Clearbit is not the primary tool. Its value for Spanish market GTM is in enriching inbound leads and website visitors with company context, not in outbound list generation.

• Strong firmographic enrichment for Spanish company records
• Best for enriching inbound leads and website visitors
• Technology stack detection for Spanish company websites
• Not designed for outbound contact list building
• Starting price: Custom — now part of HubSpot ecosystem

7. Hunter.io

Hunter.io is the most efficient tool for discovering and verifying email addresses at specific Spanish companies. Enter a Spanish company domain and Hunter surfaces the email pattern (.es domains included) and any publicly indexed contacts at that domain.

Hunter does not provide mobile numbers or firmographic data. It is a targeted email discovery and verification tool — powerful for warming up or verifying Spanish company contacts you've identified through other means.

• Domain-based email discovery — works well for Spanish .es domains
• Email verification to reduce Spanish bounce rates
• Free plan: 25 searches/mo
• No mobile numbers or firmographic data
• Starting price: $49/mo

8. Adapt.io

Adapt.io is a budget-accessible B2B contact database with Spanish records. For cost-conscious teams running initial Spanish market experiments, Adapt provides a lower entry point than Cognism or ZoomInfo.

Data freshness is the caveat. Adapt's Spanish records vary in accuracy — especially for mid-market contacts where job changes may not be reflected promptly. Validate email addresses through Hunter.io or SyncGTM before sending sequences to avoid high bounce rates.

• Budget-friendly Spanish B2B contact database
• Free tier available for initial testing
• Broader European coverage beyond Spain
• Data freshness requires validation before outreach
• Starting price: $49/mo

Side-by-Side Comparison

How to Choose

The right choice depends on what you are optimizing for:

• GDPR compliance is the priority: Cognism — phone-verified data with documented AEPD-defensible legitimate interest basis.
• Signal-driven outreach at scale: SyncGTM — waterfall enrichment plus buying signals so you reach Spanish accounts at the right moment.
• Testing the Spanish market on a budget: Apollo.io with free tier, supplemented by Hunter.io for email verification.
• Company enrichment only: Clearbit for firmographic depth on Spanish inbound leads.
• Enterprise global database including Spain: ZoomInfo — only if Spain is one territory within a broader multi-region GTM motion.

For most Spanish-market GTM teams, the highest-ROI stack is Cognism for compliant mobile data combined with SyncGTM for buying signal monitoring and CRM delivery. Relying solely on a US-centric global database for Spanish outbound is the most common driver of low connected call rates and AEPD compliance exposure in this market.