Domainr (Fastly) vs WhoisXML API - Domain API Comparison

Overview

Domainr (Fastly)

Fastly-backed Domain Search API

Domainr is now part of Fastly. The original standalone API is deprecated, while Fastly and RapidAPI packages still cover search, status, and suggestion workflows.

RapidAPI: 10,000 requests/month

WhoisXML API

Enterprise Domain, IP & DNS Intelligence

WhoisXML API offers product-specific WHOIS, DNS, IP, and threat data packages plus annual enterprise bundles for research, fraud, and security teams.

Complimentary credits after signup

Pricing Comparison

Pricing	Domainr (Fastly)	WhoisXML API
Free Tier	RapidAPI: 10,000 requests/month	Complimentary credits after signup
Paid Plans	High-volume plans via Fastly	Product-specific subscriptions
Enterprise	Custom via Fastly	Enterprise annual subscriptions
TLD Coverage	ICANN-accredited global coverage	7,500+ TLDs

Feature Comparison

Feature	Domainr (Fastly)	WhoisXML API
Free Tier	Included	Limited
API Access	Included	Included
Bulk Operations	Limited	Included
Real-time Data	Included	Included
WHOIS Data	Limited	Included
DNS Lookup	Not Included	Included
Domain Valuation	Not Included	Not Included
Brand Monitoring	Not Included	Premium Only
MCP/AI Integration	Not Included	Not Included

Which is Better?

Choose Domainr (Fastly) if you need

Backed by Fastly infrastructure
Creative domain suggestions
Lower-volume option via RapidAPI

Choose WhoisXML API if you need

Very broad domain and infrastructure coverage
Historical WHOIS, DNS, and threat data
Enterprise packages for security workflows

Consider DomScan Instead

DomScan offers the best of both worlds with comprehensive features and developer-friendly pricing.

✓ Free tier: 10,000 credits/month (no credit card)
✓ 1,500+ TLDs supported
✓ MCP integration for AI assistants
✓ Domain valuation, brand monitoring, OSINT

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