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ISBNLab vs InternetData

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

ISBNLab compared with InternetData
Detail ISBNLabInternetData logo InternetData
What it doesBook metadata database and API for searching, converting and using ISBN data Trusted IP data and domain intelligence API and databases
StageNot given Startup
FoundedNot given 2026
Based inUS PK
Pricing modelFreemium Freemium
PricingFree: $0/mo with 1,000 Daily Calls; Standard: $5/mo with 5,000 Daily Calls; Pro: $15/mo with 15,000 Daily Calls. Custom plans available. Free plan: unlimited lookups with no key needed, limited fields; try paid fields 100 times daily with free account. Starter: $39/month (or $32.50/month billed yearly) for 250,000 lookups monthly, then $0.18 per 1,000 lookups overage. Scale: $199/month (or $165.83/month billed yearly) for 2,000,000 l
Key features
  • REST and GraphQL API
  • ISBN validation and conversion
  • Multiple response formats: JSON-LD, JSON and CSV
  • OpenAPI and Swagger documentation
  • Official client libraries for PHP, Python, TypeScript/JavaScript and Go
  • Catalog of 102.1M book editions
  • Groups every edition of a book together
  • Comprehensive book data: ISBN-10, ISBN-13, EAN, ASIN, title, authors, publishers
  • Author information including names, birth and death dates, biography and photos
  • IP address geolocation lookup
  • VPN, proxy and relay detection
  • WHOIS and registry data
  • DNS records and domain intelligence
  • Service detection (SSH, SMTP, Web, DNS)
  • AS and network classification
  • Free and open databases
  • MaxMind DB format files
  • REST API with JSON responses
  • Daily and weekly database updates
What makes it different
  • One consistent schema for every book keyed by ISBN
  • Catalog of 102.1M book editions
  • ISBN validation and conversion for any valid ISBN, not just books in the catalog
  • Suitable for beginner, intermediate and advanced users
  • High accuracy with evidence-based data
  • Comprehensive coverage of VPN and proxy providers
  • Flexible licensing for redistribution and embedding
Community votes00
DR (Domain Rating by Ahrefs)4 no change since last check16 no change since last check
Trust Flow (Majestic)115
Citation Flow (Majestic)3252
Referring domains (Majestic)6160

6 details filled in for both companies.

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