Skip to content


Switch branches/tags

Name already in use

A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?

Latest commit


Git stats


Failed to load latest commit information.
Latest commit message
Commit time


App::rdapper - a simple console-based RDAP client.


To install, run:

    cpanm --sudo App::rdapper


The git repository contains a Dockerfile that can be used to build an image on your local system.

Alternatively, you can pull the image from Docker Hub:

    $ docker pull gbxyz/rdapper

    $ docker run -it gbxyz/rdapper --help




rdapper is a simple RDAP client. It uses Net::RDAP to retrieve data about internet resources (domain names, IP addresses, and autonymous systems) and outputs the information in a human-readable format. If you want to consume this data in your own program you should use Net::RDAP directly.

rdapper was originally conceived as a full RDAP client (back when the RDAP specification was still in draft form) but is now just a very thin front-end to Net::RDAP.


You can pass any internet resource as an argument; this may be:

  • a "forward" domain name such as;
  • a "reverse" domain name such as;
  • a IPv4 or IPv6 address or CIDR prefix, such as or 2001:DB8::/32;
  • an Autonymous System Number such as AS65536.
  • the URL of an RDAP resource such as
  • the "tagged" handle of an entity, such as an LIR, registrar, or domain admin/tech contact. Because these handles are difficult to distinguish from domain names, you must use the --type argument to explicitly tell rdapper that you want to perform an entity query, .e.g rdapper --type=entity ABC123-EXAMPLE.

rdapper also implements limited support for in-bailiwick nameservers, but you must use the --type=nameserver argument to disambiguate from domain names. The RDAP server of the parent domain's registry will be queried.


  • --registrar - follow referral to the registrar's RDAP record (if any) which will be displayed instead of the registry record.

  • --reverse - if you provide an IP address or CIDR prefix, then this option causes rdapper to display the record of the corresponding or domain.

  • --type=TYPE - explicitly set the object type. rdapper will guess the type by pattern matching the value of OBJECT but you can override this by explicitly setting the --type argument to one of : ip, autnum, domain, nameserver, entity or url.

    If --type=url is used, rdapper will directly fetch the specified URL and attempt to process it as an RDAP response.

    If --type=entity is used, OBJECT must be a a string containing a "tagged" handle, such as ABC123-EXAMPLE, as per RFC 8521.

  • --help - display help message.

  • --raw - print the raw JSON rather than parsing it.

  • --short - omit remarks, notices, and links.

  • --bypass-cache - disable local cache of RDAP objects.

  • --auth=USER:PASS - HTTP Basic Authentication credentials to be used when accessing the specified resource.

  • --nocolor - disable ANSI colors in the formatted output.


Copyright (c) 2023 CentralNic Ltd. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.