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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 [OPTIONS] OBJECT


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.


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

  • a "forward" domain name such as;

  • a top-level domain such as com;

  • 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.

  • --both - display both the registry and (if any) registrar RDAP records (implies --registrar).

  • --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 the URL path ends with /help then the response will be treated as a "help" query response (if you want to see the record for the .help TLD, use --type=tld help).

    • 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.

  • --version - display package and version.

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

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

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

  • --auth=USER:PASS - HTTP Basic Authentication credentials to be used when accessing the specified resource. This option SHOULD NOT be used unless you explicitly specify a URL, otherwise your credentials may be sent to servers you aren't expecting them to.

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


Copyright (c) 2012-2023 CentralNic Ltd.

Copyright (c) 2023-2024 Gavin Brown.

All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.