DomainDiscovery vs Fastly Domain Research API

DomainDiscovery8.6Visit Fastly Domain Research API7.1Visit

Higher score DomainDiscovery #2 in Domain Search Tools 8.6/10 Free plan Free plan✓ 1 of 2 features Try DomainDiscovery

vs

Fastly Domain Research API #6 in Domain Search Tools 7.1/10 Free plan Free plan✓ 1 of 2 features Visit Fastly

• DomainDiscovery fits best

  Broad free searches with strong discovery tools

• Fastly Domain Research API fits best

  Developers needing precise availability APIs

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Side by side

Feature	DomainDiscovery 8.6/10 Visit ↗	Fastly Domain Research API 7.1/10 Visit ↗
At a glance
Editor score	8.6	7.1
Ranking	#2 in Domain Search Tools	#6 in Domain Search Tools
Best for	Broad free searches with strong discovery tools	Developers needing precise availability APIs
Pricing model	Free	Free plan + paid
Starting price	Not published	Not published
Free plan	✓	✓
Free trial	—	—
Deployment	Cloud	Cloud
Support	Email	Docs
Built for	Solo, Small business, Mid-market	Small business, Mid-market, Enterprise
Features DomainDiscovery 1/2 · Fastly Domain Research API 1/2
Bulk upload	✓ (best)	Not published
API access	Not published	✓ (best)
Specs
TLD count	Not published	Not published
Bulk search limit	1000	Not published
Domain variations	Advanced	Advanced
Export options	Multiple	Not published
Our review
Pros	Searches live availability across more than 1,600 TLDs Supports bulk checks for up to 1,000 domains per run Combines AI ideas, keyword expansion, and registrar price comparisons	Registry-level availability checks for precise status results Algorithmic suggestions with context-aware refinements JSON responses with premium and aftermarket offer data
Cons	Does not complete domain registrations or payments Shortlists are stored locally in the browser Web-only access without a described API workflow	API-only access offers no standalone search interface Usage is split across separate Suggest and Status meters Estimated checks are less precise than registry-level checks
Our verdict	DomainDiscovery is a free, web-based domain research toolkit for startups, local businesses, agencies, investors, and operators. It brings live availability checks across more than 1,600 TLDs together with AI domain name generation,… Read the review →	Fastly Domain Research API is a programmatic domain discovery and availability service for developers building website builders, hosting platforms, CMS and ecommerce products, registrars, or branding workflows. Its Suggest method generates… Read the review →

Strengths and trade-offs

• DomainDiscovery — where it wins

  • Searches live availability across more than 1,600 TLDs
  • Supports bulk checks for up to 1,000 domains per run
  • Combines AI ideas, keyword expansion, and registrar price comparisons

  Where it doesn't

  • Does not complete domain registrations or payments
  • Shortlists are stored locally in the browser
  • Web-only access without a described API workflow

• Fastly Domain Research API — where it wins

  • Registry-level availability checks for precise status results
  • Algorithmic suggestions with context-aware refinements
  • JSON responses with premium and aftermarket offer data

  Where it doesn't

  • API-only access offers no standalone search interface
  • Usage is split across separate Suggest and Status meters
  • Estimated checks are less precise than registry-level checks

• DomainDiscovery8.6/10 · Free plan

  A broad free domain research toolkit for discovery, checking, and comparison.

  Try DomainDiscoveryFull verdict →
• Fastly Domain Research API7.1/10 · Free plan

  A focused API for precise domain availability, suggestions, and aftermarket signals.

  Visit FastlyFull verdict →