2026 guide

RDAP API alternatives

Whether you are frustrated with pricing, missing features, or just exploring options, we will help you find the right fit.

Why switch from RDAP API?

RDAP API is one of several domain API providers. Whether you're looking for different pricing, other features, or just want to see what else is available, you're in the right place.

We compare the key differences between RDAP API and its alternatives. DomScan is one option for teams that value a recurring free tier, a broad toolkit, and remote MCP access.

Common reasons to switch

You need availability checks beyond RDAP lookups
You want DNS, valuation, and monitoring in one API
You want a free monthly allowance, not a seven-day trial
You need SSL and email security checks too

Who should stay with RDAP API

Stay with RDAP API if your product centers on clean RDAP retrieval and normalization for domains, IPs, and ASNs.

Side-by-side comparison: DomScan vs RDAP API

DomScan

Modern domain intelligence API

DomScan is a developer-first domain intelligence platform offering real-time availability checks, RDAP data, domain valuation, and AI integration via MCP.

Free: 10,000 credits/month

RDAP API

RDAP-first domain, IP, and ASN lookup API

RDAP API centers on RDAP lookups for domains, IP ranges, and ASNs for teams that want structured registration data without buying a larger intelligence platform.

Seven-day free trial on every plan

Pricing comparison

Pricing	DomScan	RDAP API
Free tier	Free: 10,000 credits/month	Seven-day free trial on every plan
Paid plans	Pay-as-you-go from $10	$9/month Starter plan
Enterprise	Custom pricing	$199/month Business plan
How usage is billed	Credits are charged per operation or item, and every endpoint publishes its credit cost.	Credits, pages, requests, records, compute units, subscriptions, and browser-time blocks are not interchangeable.

Sources

Last updated: 2026-07-29

Feature comparison

Feature	DomScan	RDAP API
Free tier	Included	Limited
API access	Included	Included
Bulk operations	Included	Limited
Real-time data	Included	Included
WHOIS data	Included	Included
DNS lookup	Included	Not included
Domain valuation	Included	Not included
Brand monitoring	Included	Not included
MCP/AI integration	Included	Not included

What RDAP API offers

Focused RDAP experience for domains, IPs, and ASNs
Seven-day free trial on every plan

DomScan advantages

Free tier of 10,000 credits/month, no credit card required
1,100+ TLDs backed by live RDAP coverage
MCP integration for AI assistants like Claude
Domain valuation, brand monitoring, and OSINT tools
Modern REST API with JSON responses

Switching from RDAP API

Migrating from RDAP API to DomScan is straightforward. DomScan uses standard REST endpoints with JSON responses and predictable authentication.

Quick example:
# Check domain availability with DomScan
curl "https://domscan.net/v1/status?name=example&tlds=com,net,org" \
  -H "X-API-Key: your-api-key"

# Response
{
  "name": "example",
  "results": [
    { "domain": "example.com", "available": false, "source": "rdap" },
    { "domain": "example.net", "available": false, "source": "rdap" },
    { "domain": "example.org", "available": false, "source": "rdap" }
  ]
}

Frequently asked questions

How easy is it to switch from RDAP API to DomScan?

DomScan uses standard REST APIs with JSON responses. Migrating usually means changing the endpoint URL, the authentication header, and the response parsing.

Is DomScan cheaper than RDAP API?

DomScan has a free tier of 10,000 credits/month with no credit card required, and paid usage is pay-as-you-go. Compare the published rates and billing units for the workloads you run.

Does DomScan have all the features of RDAP API?

DomScan covers availability, WHOIS/RDAP, DNS, valuation, monitoring, and security workflows. Feature depth differs by provider, so compare the endpoints and limits your integration needs.

What support options does DomScan offer?

DomScan provides public documentation and email support. Contact us before purchase if you need contractual support or service commitments.