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RDAP API

by io.rdapapi
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Server Details

Normalized JSON for any domain across 1,200+ TLDs, reading WHOIS where no RDAP server exists.

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Status
Healthy
Uptime
100.0% over the last 24 hours
Last Tested
Transport
Streamable HTTP · MCP 2025-11-25
URL
ChatGPT
–
Claude
–

TDQS

A4/5.0

Scored across 7 tools

Disambiguation5/5

Each tool targets a distinct RDAP object type (ASN, domain, entity, IP, nameserver, TLD metadata), and descriptions explicitly clarify boundaries such as bulk vs single domain and entity handles vs domain registrars. There is no meaningful overlap that would cause misselection.

Naming Consistency4/5

Six of seven tools follow a clear <resource>-lookup convention (asn-lookup, domain-lookup, ip-lookup, etc.). The 'tlds' tool breaks the pattern, but it is a metadata listing rather than a lookup, making the deviation understandable.

Tool Count5/5

Seven tools is well-scoped for an RDAP API, with each tool covering a distinct query type. There are no redundant or filler tools, and the set is neither thin nor bloated.

Completeness5/5

The surface covers all major RDAP object types (domains, IPs, ASNs, entities, nameservers) plus bulk domain lookup and TLD metadata. Since RDAP is read-only, this represents complete lifecycle coverage; bulk IP/ASN lookups are the only conceivable extension but are not essential.

Available Tools

7 tools
asn-lookupASN LookupA
Read-only
Inspect

Look up normalized RDAP data (holder, country, status, registration dates) for an autonomous system number.

Inputs: asn (required).

bulk-domain-lookupBulk Domain LookupA
Read-only
Inspect

Look up normalized RDAP registration data for several domain names in one pooled call. Requires a Pro or Business plan; every domain in the batch counts against the quota.

Inputs: domains (required), whois, follow.

domain-lookupDomain LookupA
Read-only
Inspect

Look up normalized RDAP registration data (registrar, status, dates, nameservers, contacts) for a domain name.

Inputs: domain (required), whois, follow.

entity-lookupEntity LookupA
Read-only
Inspect

Look up normalized RDAP data for an RIR entity handle — an organization or contact identifier such as "GOGL" or "ORG-RIEN1-RIPE". Only ARIN, RIPE, APNIC, LACNIC and AFRINIC handles resolve; a domain's registrar or registrant comes from domain-lookup instead.

Inputs: handle (required).

ip-lookupIP Address LookupA
Read-only
Inspect

Look up normalized RDAP allocation data (network range, holder, country, status, geofeed URL) for an IP address or CIDR block.

Inputs: ip (required), prefix.

nameserver-lookupNameserver LookupB
Read-only
Inspect

Look up normalized RDAP data (IP addresses, status, sponsoring registrar) for a nameserver hostname.

Inputs: host (required).

tldsSupported TLDsA
Read-only
Inspect

List the TLDs this API can query, or describe one: which RDAP server answers for it, since when it has been supported, and how often that server fills each field. Metadata, so it never counts against the monthly quota.

Inputs: tld, since, server.

Tool Schema Changelog

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