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RDAP Lookup API

Structured registration data for a domain from its registry's RDAP server: registrar, creation/expiry dates, status codes, nameservers and DNSSEC. Personal registrant data is never returned.

GEThttps://api.gridlode.com/v1/domain/rdap
Get an API keyReference docs

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Parameters

NameTypeDescription
domainrequiredstringDomain to look up, e.g. example.com. URLs and subdomains are reduced to the registrable domain.
max_ageintegerAccept a cached answer up to this many seconds old, billed at 50%. Default 0 (always fresh).

Response fields

  • domain · Normalized registrable domain (punycode for IDNs).
  • registered · false when the registry has no record (the domain is unregistered).
  • registrar · name, iana_id, abuse_email, abuse_phone of the sponsoring registrar.
  • registrant · Organization and country only when published and not redacted. Never personal names or emails.
  • dates · registered, expires, updated, rdap_database_updated (ISO 8601).
  • age_days · Days since registration.
  • status · EPP status codes, e.g. client transfer prohibited.
  • nameservers · Lowercase name server hostnames.
  • dnssec · true when the delegation is signed.
  • rdap_server / registrar_rdap_url · The registry server we queried and the registrar's RDAP link when given.

Code

curl "https://api.gridlode.com/v1/domain/rdap?domain=example.com" \
  -H "Authorization: Bearer $GRIDLODE_KEY"
1 credit per request
One credit is $0.001 on the smallest pack, from $0.0003 on enterprise plans.
Half price for cached data
Cached for up to 24 h. Pass max_age to use it.
Failed requests are free
Blocks, timeouts and target errors never cost credits.

Market reference: TabAPI RDAP: 1 credit ($1.00/1k).

Questions

Part of these solutions
Why use RDAP instead of WHOIS?

RDAP returns standardized JSON over HTTPS with consistent fields across registries, so you don't have to parse free-form text. ICANN made RDAP the authoritative source for gTLDs in 2025.

Do you return registrant contact details?

No. We only return the registrant organization and country when the registry publishes them. Personal names, emails and phone numbers are never returned.

How much does the RDAP Lookup API cost?

1 credit per request. One credit costs $0.001 on the smallest pack and as little as $0.0003 on enterprise plans. Cached answers cost half and failed calls are free.

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