Registration Protocols Extensions R. Carney
Internet-Draft GoDaddy Inc.
Intended status: Standards Track J. Galvin
Expires: December 11, 2016 Afilias USA
June 9, 2016

Unavailable Domain Name File Format Specification


This document defines the file format for the storage of unavailable domain names and related details for a top level domain name registry.

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Table of Contents

1. Introduction

This document specifies a file format for the storage of unavailable domain names and related details for a top level domain (TLD) name registry, designed to facilitate interoperability and reusability among domain name registries and registrars.

The increased number of domain name registries and registrars, the greater number of reasons for domain names not being available, and to make accommodations for possible real-time communications issues between registries and registrars has driven the need for this standard sharable file.

1.1. Conventions Used in This Document

The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119 [RFC2119].

2. General File Format Elements

File format will be a comma separated values (CSV) file and MUST use the US-ASCII character set. See informational RFC 4180 and RFC 7111 for details on the CSV file format.

Filename has two forms depending on content. For a file containing only a list of unavailable domain names in one Top Level Domain (TLD) the filename MUST be <TLD>-unavailablenames-<YYYY-MM-DDThhmmss>.csv. For a file containing a list of unavailable domain names in multiple Top Level Domains (TLDs) the filename MUST be unavailablenames-<YYYY-MM-DDThhmmss>.csv. For an IDN TLD <TLD> MUST be ace-encoded (i.e. in the "xn--" format). <YYYY-MM-DDThhmmss> MUST be the date and time (in UTC) the file was created indicating that all the names in the file were unavailable on that date at the time the file was created.

The first row MUST be the column headings: TLD, Domain Name, Status. The remaining rows will contain the data (all unavailable names) from the registry in the following structure: <TLD>, <Domain Name>, <Status>. Where <TLD> is the TLD of the domain name, <Domain Name> is the string of characters that represent the unavailable name, and <Status> is one of four values (REGISTERED, REGISTRY RESERVED, POLICY RESERVED, IDN VARIANT RESERVED). If the <TLD> and/or <Domain Name> is an IDN it MUST be ace-encoded (i.e. in the "xn--" format).

All domain name labels that are not available for registration in the SRS, for any reason, to the registrar channel MUST be included in this file.

3. Examples

3.1. Single TLD File Example

Example of a file that contains unavailable domain names from a single TLD.

FileName: example-unavailablenames-2016-05-01T010000.csv

3.2. Multiple TLDs File Example

Example of a file that contains unavailable domain names from multiple TLDs.

FileName: unavailablenames-2016-05-01T010000.csv

4. Security Considerations

The file format described in this document does not provide any security services.

5. Acknowledgements

The authors wish to thank the following persons for their feedback and suggestions:

6. Change History

7. Normative References

[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP 14, RFC 2119, DOI 10.17487/RFC2119, March 1997.
[RFC4180] Shafranovich, Y., "Common Format and MIME Type for Comma-Separated Values (CSV) Files", RFC 4180, DOI 10.17487/RFC4180, October 2005.
[RFC7111] Hausenblas, M., Wilde, E. and J. Tennison, "URI Fragment Identifiers for the text/csv Media Type", RFC 7111, DOI 10.17487/RFC7111, January 2014.

Authors' Addresses

Roger Carney GoDaddy Inc. 14455 N. Hayden Rd. #219 Scottsdale, AZ 85260 US EMail: URI:
James Galvin Afilias USA 300 Welsh Road, Building 3, Suite 105 Horsham, PA 19044 US EMail: URI: