Skip to main content

Registration Protocols Extensions (regext)

WG Name Registration Protocols Extensions
Acronym regext
Area Applications and Real-Time Area (art)
State Active
Charter charter-ietf-regext-02 Approved
Document dependencies
Additional resources Issue tracker, Wiki, Zulip stream
Personnel Chairs Antoin Verschuren, James Galvin
Area Director Murray Kucherawy
Mailing list Address
To subscribe
Chat Room address

Charter for Working Group

Charter for Working Group

The Extensible Provisioning Protocol (EPP, Standard 69) is the
standard domain name provisioning protocol for top-level domain name
registries. To avoid many separate EPP extensions that provide the
same functions, it's important to coordinate and standardize EPP

The EPP Extensions (EPPEXT) working group completed its first goal of
creating an IANA registry of EPP extensions. The registration process
of the registry is documented in RFC 7451. Extensions may be registered
for informational purposes as long as there is a published
specification that has been reviewed by a designated expert. The
Registration Data Access Protocol (RDAP, RFCs 7480-7484) is the
proposed standard for retrieving registration metadata from both
domain name and Regional Internet Registries. To ensure interoperable
implementations it's important to coordinate and standardize
extensions and profiles to be used by registries.

Extensions in both cases that are targeted for the Standards Track are
subject to more thorough review and open discussion within the IETF.
In addition, commonality may be discovered in related extensions,
especially EPP extensions listed on the EPP extension registry, for
which it would makes sense to merge them into a single standard
extension everybody agrees on.

The REGEXT working group is the home of the coordination effort for
standards track extensions. The selection of extensions for standards
track shall incorporate the following guidelines.

  1. Proprietary documented extensions and individual submissions of
    informational or experimental EPP extensions will follow the expert
    review process as described in RFC 7451 for inclusion in the EPP
    extensions registry. These documents will not be part of the REGEXT
    working group work or milestones. The working group may discuss or
    advise on these documents.

  2. Extensions that seek standards track status can be suggested for WG
    adoption. If accepted by the working group then the development of the
    standard may proceed.

  3. When there are no more proposals for Standards-Track extensions,
    the working group will either close or become dormant, with the
    decision made in consultation with the responsible AD. In any case,
    the mailing list will remain open and available for the use of the
    expert review process as described in RFC 7451.

The working group may also take on work to develop specifications that
describe the following types of information exchanged between entities
involved in Internet identifier registration that are using the RDAP or
EPP protocols:

  • Uniform representation formats for publishing local policy or
    configuration options regarding EPP and RDAP use.

  • Data formats for files exchanged between registration entities that
    need insertion in or extraction from EPP or RDAP.

  • Technical guidance for registration processes that are supported by
    EPP or RDAP.


Date Milestone Associated documents
May 2024 Submit for publication "Extensible Provisioning Protocol (EPP) mapping for DNS Time-To-Live (TTL) values" draft-ietf-regext-epp-ttl
Mar 2024 Submit for publication "RDAP RIR Search" draft-ietf-regext-rdap-rir-search
Jun 2023 Submit for publication "DNS Data Dictionary" draft-ietf-regext-datadictionary
Mar 2023 Submit for publication "Using JSContact in Registration Data Access Protocol (RDAP) JSON Responses" draft-ietf-regext-rdap-jscontact

Done milestones

Date Milestone Associated documents
Done Submit for publication "Federated Authentication for the Registration Data Access Protocol (RDAP) using OpenID Connect" draft-ietf-regext-rdap-openid
Done Submit for publication "Registration Data Access Protocol (RDAP) Reverse search capabilities" draft-ietf-regext-rdap-reverse-search
Done Submit for publication "Redacted Fields in the Registration Data Access Protocol (RDAP) Response" draft-ietf-regext-rdap-redacted
Done Submit for publication "Use of Internationalized Email Addresses in EPP protocol" draft-ietf-regext-epp-eai
Done Submit for publication "Finding the Authoritative Registration Data (RDAP) Service" draft-ietf-regext-rfc7484bis
Done Submit for publication "Registry Maintenance Notifications for the EPP" draft-ietf-regext-epp-registry-maintenance
Done Submit for publication "Registration Data Access Protocol (RDAP) Query Format" draft-ietf-regext-rfc7482bis
Done Submit for publication "JSON Responses for the Registration Data Access Protocol (RDAP)" draft-ietf-regext-rfc7483bis
Done Submit for publication "EPP Unhandled Namespaces" draft-ietf-regext-unhandled-namespaces
Done Submit for publication "EPP Secure Authorization Information for Transfer" draft-ietf-regext-secure-authinfo-transfer
Done Submit for publication "Registration Data Access Protocol (RDAP) Query Parameters for Result Sorting and Paging"
Done Submit for publication "Registration Data Access Protocol (RDAP) Partial Response"
Done Submit for publication "Domain Name Registration Data (DNRD) Objects Mapping" draft-ietf-regext-dnrd-objects-mapping
Done Submit for publication "Registry Data Escrow Specification" draft-ietf-regext-data-escrow
Done Submit for publication "Login Security Extension for the Extensible Provisioning Protocol (EPP)"
Done Submit for publication "EPP Domain Name Mapping Extension for Bundling Registration"
Done Submit for publication "Change Poll Extension for EPP"
Done Submit for publication "Registry Fee Extension for EPP"