# Registration Data Access Protocol (RDAP)

The Registration Data Access Protocol (RDAP) is an alternative protocol to WHOIS that specifies how to access internet resource registration data. It is specifically designed to address various shortcomings in WHOIS. It makes use of HTTPS and follows a RESTful (representational state transfer) web services model.

# Using RDAP to query RIPE Database

The contents of RIPE database can be accessed using RDAP via https://rdap.db.ripe.net/{objectType}/{key} where {objectType} must be one of the Object Types listed below.

List of supported object types

Object Type Description
autnum AUT-NUM objects
domain DOMAIN objects
ip INETNUM and INET6NUM objects
entity PERSON, ROLE and MNTNER objects

The value of {key} depends on the object type.

For example:

curl -v https://rdap.db.ripe.net/ip/2001:67c:2e8:9::c100:14e6

queries IP information, while

curl -v https://rdap.db.ripe.net/domain/

queries domain information.

If the RIPE Database is not authoritative for the requested resource, the response will redirect to the authoritative RIR.

# RDAP Specification

The RDAP protocol is specified in the RFCs:

# Known Issues

Known issues with the RDAP implementation for RIPE Database can be found on GitHub (opens new window).