docs/reference/name-based-namespaces.rst
.. _reference.name-based-namespaces:
RFC 9562_ (formerly RFC 4122_) defines a handful of UUIDs to use with "for some potentially interesting name spaces."
.. list-table:: :widths: 30 70 :align: center :header-rows: 1
* - Constant
- Description
* - :php:const:`Uuid::NAMESPACE_DNS <Ramsey\\Uuid\\Uuid::NAMESPACE_DNS>`
- The name string is a fully-qualified domain name.
* - :php:const:`Uuid::NAMESPACE_URL <Ramsey\\Uuid\\Uuid::NAMESPACE_URL>`
- The name string is a URL.
* - :php:const:`Uuid::NAMESPACE_OID <Ramsey\\Uuid\\Uuid::NAMESPACE_OID>`
- The name string is an `ISO object identifier (OID)`_.
* - :php:const:`Uuid::NAMESPACE_X500 <Ramsey\\Uuid\\Uuid::NAMESPACE_X500>`
- The name string is an `X.500`_ `DN`_ in `DER`_ or a text output format.
.. _RFC 4122: https://tools.ietf.org/html/rfc4122 .. _RFC 9562: https://www.rfc-editor.org/rfc/rfc9562 .. _ISO object identifier (OID): http://www.oid-info.com .. _X.500: https://en.wikipedia.org/wiki/X.500 .. _DN: https://en.wikipedia.org/wiki/Distinguished_Name .. _DER: https://www.itu.int/rec/T-REC-X.690/