B2B & Local Business Email, Phone, WhatsApp & Social Finder (v2.1 OpenStreetMap + Legal CIF + Deep Crawler)

Discover and enrich real local businesses in any city worldwide without search-engine IP blocks, extract verified Spanish fiscal CIF identifiers, assess email deliverability, and score lead quality for cold outreach.

Key Capabilities (v2.1)

1. Zero-Block Local Business Discovery (city + businessCategory):
   • Queries the official OpenStreetMap Nominatim Bounded Viewbox API to discover verified local businesses (Dentists, Clinics, Lawyers, Real Estate Agencies, Hotels, Companies, Coworking spaces, Architects, Tax Advisors, Restaurants, Gyms, etc.) with physical address, postcode, coordinates (latitude/longitude), and official website.
2. Deep Internal Subpage Crawler (/contacto, /aviso-legal, /contact, /impressum):
   • Automatically crawls internal contact and legal notice subpages where 70%+ of corporate data and CIFs are located.
3. Spanish CIF & Tax ID Extraction with Checksum Validation:
   • Extracts and verifies Spanish company CIFs (e.g. B87654321, A28015865) using official checksum algorithms (validating letter vs digit control characters for entity types A through W), flagging cif_verified: true.
4. Anti-Bounce DNS Deliverability Pre-flight:
   • Inspects target email domains via active DNS resolution to classify deliverability (VERIFIED_MX_ACTIVE, VERIFIED_FREE_PROVIDER, RISKY_NO_HOST) and prevent domain reputation damage in cold outreach campaigns.
5. B2B Lead Quality Score (0 - 100):
   • Automatically calculates an algorithmic lead readiness score based on presence of verified CIF, corporate domain email, direct phone, physical address, and social presence.
6. GDPR / LSSI Corporate Email Classification:
   • Automatically separates corporate_emails from generic_provider_emails (@gmail.com, @hotmail.com), with an optional corporateEmailsOnly toggle for strict B2B compliance.
7. Multi-Channel Lead Signals:
   • Extracts Phone Numbers (tel: links + OSM registry), Direct WhatsApp Links (wa.me / api.whatsapp.com), and Social Profiles (LinkedIn, Instagram, Facebook, X/Twitter, YouTube, TikTok).

Example Output Record (city: "Madrid, Spain", businessCategory: "dentist")

{
  "domain": "https://www.cleardent.es/clinica-dental/madrid/san-sebastian-de-los-reyes",
  "business_name": "Cleardent",
  "category": "dentist",
  "cif": "B19582136",
  "cif_verified": true,
  "lead_quality_score": 95,
  "email_deliverability": "VERIFIED_MX_ACTIVE",
  "emails": [
    "dpd@cleardent.es",
    "paciente@cleardent.es"
  ],
  "corporate_emails": [
    "dpd@cleardent.es",
    "paciente@cleardent.es"
  ],
  "generic_provider_emails": [],
  "phones": [
    "+34601862535",
    "+34919495377"
  ],
  "whatsapp_links": [
    "https://api.whatsapp.com/send?phone=34601862535"
  ],
  "social_profiles": [
    "https://www.instagram.com/clinicascleardent/",
    "https://www.linkedin.com/company/clinicas-cleardent/",
    "https://www.tiktok.com/@clinicascleardent",
    "https://www.youtube.com/@clinicascleardent"
  ],
  "address": "Avenida de España 12, 28703, San Sebastián de los Reyes",
  "city": "San Sebastián de los Reyes",
  "postcode": "28703",
  "country_code": "ES",
  "latitude": 40.5441143,
  "longitude": -3.6286558,
  "opening_hours": "Mo-Fr 10:00-14:00,16:00-20:00",
  "pages_crawled": 2,
  "contact_page_url": "https://www.cleardent.es/aviso-legal/",
  "gdpr_corporate_filter_active": false
}