Every object in Active Directory has required and optional attributes. The required attributes includes the Object Identifier ( OID ). The idea is analogous to internet addresses but instead of defining networks and subnets, the OIDs are used to define object classes and attributes. Unlike TCP/IP addresses there is no limitation to the length of the dotted notation. Like IP networks, there are multiple registrars to get your own OID. OIDs are owned by corporations, for example, Microsoft’s OID is 1.3.6.1.4.1.311. To make some sense of the OID:
- 1.3.6.1.4.1 – IANA-registered Private Enterprises
- 1.3.6.1.4 – Internet Private
- 1.3.6.1 – OID assignments from 1.3.6.1 – Internet OID root for the Internet
- 1.3.6 – US Department of Defense
- 1.3 – ISO Identified Organization
- 1 – ISO assigned OIDs
- 1.2.840.113556.1.4.1302 – Microsoft OID used with DEN Attributes
- 1.2.840.113556.1.4 – Microsoft OID used with DEN
- 1.2.840.113556.1 – Microsoft OID used with DEN
- 1.2.840.113556.3.10.1 – Microsoft MAPI TNEF
- 1.2.840.113556.3.10.2 – Microsoft MAPI Attachment – generic mapi attachment
- 1.2.840.113556.3.10 – Microsoft MAPI OIDs
- 1.2.840.113556.3 – Microsoft OIDs (MAPI?)
- 1.2.840.113556.4.2 – Microsoft Word
- 1.2.840.113556.4.3 – Microsoft Excel
- 1.2.840.113556.4.5 – Microsoft PowerPoint
- 1.2.840.113556.4.6 – Microsoft Works
- 1.2.840.113556.4 – Microsoft file formats
- 1.2.840.113556.5.1 – Microsoft Exchange
- 1.2.840.113556 – Microsoft
- 1.2.840 – USA
- 1.3.6.1.4.1.311.10.3.3 – Microsoft Server Gated Crypto (msSGC)
- 1.3.6.1.4.1.311 – Microsoft
- 2.23.42.9.33 – id-set-Microsoft
- 2.23.42.9 – SET Vendors
- 0 – ITU-T assigned
- 1 – ISO assigned
- 2 – Joint ISO/ITU-T assignment
If you are not sick of OIDs by now, for more information that you ever wanted to know about OIDs, or if you want to search the OID dbs, see the OID Web page.
Major thanks for the blog. Really Great.
netsera.com.ng