dc

A short description

A string holding one component, a label, of a DNS domain name naming a host.

Usage

Utility class
[ Core | Standard | Extended ]
Basic applications like white pages and some authorization data.

Is attribute required?
Optional. Application selects whether it will support attribute or not.

Confidentiality
None. No restrictions or requirements.

Integrity
Low. Values cannot be guaranteed to be up to date.

Availability
Low. The attribute may or may not be available for relevant objects.

Details

Multiple values?
Single value

Value format
IA5 String

Attribute origin
Common Attributes

LDAP

OID

2.16.840.1.113730.3.1.241

Datatype

IA5 String

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Valid values include "example" and "com" but not "example.com". The latter is invalid as it contains multiple domain components.

It is noted that the directory service will not ensure that values of this attribute conform to the host label restrictions. It is the client's responsibility to ensure that the labels it stores this attribute are appropriately restricted.

Directory applications supporting International Domain Names SHALL use the ToASCII method [RFC3490] to produce the domain component label. The special considerations discussed in Section 4 of RFC3490 should be taken, depending on whether the domain component is used for "stored" or "query" purposes.

Example applications for which this attribute would be useful:

Directory of directories, white pages, email client.