oid for Active Directory classess and attributes

In Microsoft They have:
1.2.840.113556.1.5.9 which is described below:

Value Meaning Description
1 ISO Identifies the root authority.
2 ANSI Group designation assigned by ISO.
840 USA Country/region designation assigned by the group.
113556 Microsoft Organization designation assigned by the country/region.
1 Active Directory Assigned by the organization.
5 Classes Assigned by the organization.
9 user class Assigned by the organization.

OID can be registered for organization in IANA in node:
1 - ISO
3 - identified-organization
6 - dod
1 - internet
4 - private
1 - enterprise
x - my organization (of course I know it, but I'll not provide it here

Using the same schema as Microsoft I can use:
1.3.6.1.4.1.x.1. - Active Directory
1.3.6.1.4.1.x.1.1. - classess
1.3.6.1.4.1.x.1.2. - attributes