IDN.3.4.Same Entity Allocation
Describe how this RSP’s implementation will comply with the following: For second-level variant labels that arise from a registration based on a second-level IDN table, all allocatable variant labels in the set must only be allocated to the same entity or withheld for possible allocation only to that entity (e.g., all allocatable second-level labels {s1, s1v1, …} under all allocated variant TLD labels {t1, t1v1, …}).
Response
As described in the answer to IDN Q3.3, TANGO REGISTRY SERVICES® currently supports two different models for supporting variants:
* variants as objects
* variants as attributes
The answer to this question will be different for the two models.
1. Variants as Objects
In this model, each variant domain is its own first-class domain object with its own independent life-cycle. Only for transfers the life-cycle is in-sync, i.e., it is not possible to transfer one domain without transferring all existing variants of that domain at the same time.
Another fixed link between a domain and all its variants is the registrant contact.
Creating/Activating a new Variant
A variant domain name of an existing domain can only be registered if the same contact handle or ROID (i.e., the exact same contact object) is used for its registrant contact. In case a different contact handle / ROID is used during a domain creation EPP command, the command will fail with an error message telling the registrar that this is a variant of an existing domain and therefore the same registrant contact needs to be used.
Contact objects will be shared across all variant TLDs, making it possible to create a contact in t1 and using the same contact object for domains in t1v1.
In case the registry does not support registrant contact objects (minimal dataset), the registrar will contractually be obliged to ensure the same entity principle for the registrant.
Independent of the registration data policy, any variant domain names can only be added by the sponsoring registrar of the source domain name. A different registrar, even if using the same registrant contact handle, will receive an error stating that the domain name is blocked as a variant of an existing domain.
Updating the Registrant Contact (if supported by the data model)
In case the contact itself is updated (contact:update), the same entity principle is not affected, because this contact handle is used for all existing variant domain names and hence all registrant contacts stay in sync.
In case a domain is assigned a new contact handle / ROID, this contact handle is automatically assigned to all existing variants of that domain name. This is a server policy. The response to such a domain update EPP command will contain a list of all existing variants to inform the registrar that their registrant contact handle was changed at the same time.
2. Variants as Attributes
As mentioned in the answer to Q3.3, TANGO RS will only support TLDs that have the same IDN tables across all variants. This makes it possible to have a single source domain name for each variant set across all variant TLDs (instead of requiring a source domain name per variant TLD).
As a consequence, all variant domain names can be added to a single domain name, even if the variants belong to different variant TLDs. For example, the domain s1.t1 can get a variant attribute s1v1.t1v1.
This model then adheres to the same entity principle by definition. The domain and all of its activated variants are an inseparable entity. Variants cannot exist without the main (source) domain name.
Each variant is added as an attribute to an already existing domain. The variant does not have any properties (and in particular no contacts) itself, it simply inherits all properties from the main domain. Since there is only one first-class domain object (with variant attributes) it can only belong to a single entity and can have only a single sponsoring registrar.
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