RDAP Extensions

Created

  • 2015-01-12

Last Updated

  • 2026-10-08

Available Formats


RDAP Extensions

Registration Procedure(s)

  • Specification Required

Expert(s)

  • Jasdip Singh, Scott Hollenbeck

Reference

  • RFC 7480: HTTP Usage in the Registration Data Access Protocol (RDAP)

Available Formats

Extension Identifier Registry Operator Specification Contact Intended Usage
arin_originas0 American Registry for Internet Numbers https://bitbucket.org/arin-specs/arin-rdap-originas/src/master/arin-rdap-originas.txt American Registry for Internet Numbers COMMON
artRecord .ART https://github.com/centralnicgroup-public/centralnic-rdap-extensions/blob/master/art-records.md CentralNic Ltd COMMON
autnums Any RFC 9910 IETF This extension identifier is used for INR-specific search operations.
autnumSearchResults Any RFC 9910 IETF This extension identifier is used for INR-specific search operations.
cidr0 Various RIRs under the NRO https://bitbucket.org/nroecg/nro-rdap-cidr/src/master/nro-rdap-cidr.txt American Registry for Internet Numbers COMMON
farv1 Any RFC 9560 IETF This extension describes version 1 of a federated authentication method for RDAP using OAuth 2.0 and OpenID Connect.
fred CZ.NIC, z. s. p. o. https://fred.nic.cz/rdap-extension/ Jaromir Talir FRED is open source domain registry system that includes RDAP server. This RDAP server provides some extended features defined in specification.
geofeed1 Any RFC 9877 IETF This extension describes version 1 of a method to access the IP geolocation feed data through RDAP.
icann_rdap_response_profile_0 (OBSOLETED) ICANN https://www.icann.org/gtld-rdap-profile ICANN COMMON
icann_rdap_response_profile_1 ICANN https://www.icann.org/en/system/files/files/rdap-response-profile-21feb24-en.pdf ICANN COMMON
icann_rdap_technical_implementation_guide_0 (OBSOLETED) ICANN https://www.icann.org/gtld-rdap-profile ICANN COMMON
icann_rdap_technical_implementation_guide_1 ICANN https://www.icann.org/en/system/files/files/rdap-technical-implementation-guide-21feb24-en.pdf ICANN COMMON
ips Any RFC 9910 IETF This extension identifier is used for INR-specific search operations.
ipSearchResults Any RFC 9910 IETF This extension identifier is used for INR-specific search operations.
nask NASK - National Research Institute https://www.dns.pl/NASK_extension_of_RDAP_Response NASK - National Research Institute COMMON
nro_rdap_profile_0 Any https://bitbucket.org/nroecg/nro-rdap-profile/raw/v1/nro-rdap-profile.txt NRO ADDRESS REGISTRIES
nro_rdap_profile_asn_flat_0 Any https://bitbucket.org/nroecg/nro-rdap-profile/raw/v1/nro-rdap-profile.txt NRO ADDRESS REGISTRIES
nro_rdap_profile_asn_hierarchical_0 Any https://bitbucket.org/nroecg/nro-rdap-profile/raw/v1/nro-rdap-profile.txt NRO ADDRESS REGISTRIES
paging Any RFC 8977 IETF This extension describes a best practice for result set paging.
platformNS Any https://github.com/centralnicgroup-public/centralnic-rdap-extensions/blob/master/platformNS.md CentralNic Ltd COMMON
rdap_objectTag Any RFC 8521 IETF This extension describes a best practice for structuring entity identifiers to enable query bootstrapping.
redacted Any RFC 9537 IETF This extension identifies the redacted fields in an RDAP response.
redirect_with_content Any https://raw.githubusercontent.com/APNIC-net/rdap-redirect-with-content/v1/apnic-rdap-redirect-with-content.txt Tom Harrison COMMON
regType Any https://github.com/centralnicgroup-public/centralnic-rdap-extensions/blob/master/regtype.md CentralNic Ltd COMMON
reliabilityAssessment Any bcsec-RDAP-RA, Version 1 Bertoldi Cybersecurity COMMON
reverse_search Any RFC 9536 IETF This extension identifier is used for both URI path segments and response extensions related to the reverse search in RDAP.
rirSearch1 Any RFC 9910 IETF This extension identifier is used for INR-specific search operations.
sorting Any RFC 8977 IETF This extension describes a best practice for result set sorting.
subsetting Any RFC 8982 IETF This extension describes best practice for partial response provisioning.
ttl0 Any RFC 10037 IETF This extension describes how DNS TTL values can be included in RDAP responses.

Contact Information

Name Contact URI Last Updated
American Registry for Internet Numbers info&arin.net 2023-01-02
Bertoldi Cybersecurity alessandro&bertoldicybersecurity.com 2026-10-06
CentralNic Ltd rdap&centralnic.com 2024-09-20
CZ.NIC, z. s. p. o. tech&nic.cz 2016-03-30
ICANN globalsupport&icann.org
IETF iesg&ietf.org
Jaromir Talir jaromir.talir&nic.cz 2016-03-30
NASK - National Research Institute info&dns.pl 2025-02-04
NRO secretariat&nro.net 2021-01-27
Tom Harrison tomh&apnic.net 2021-01-05