Overview#

1.2.840.113556 is the Private Enterprise Number Object IDentifier Assigned to Microsoft.

We have found a description as follows:[1]

• 1.2.840.113556.1 - Microsoft OID used with DEN (as used in Microsoft Active Directory)
• 1.2.840.113556.3 - Microsoft OIDs (MAPI?)
• 1.2.840.113556.4 - Microsoft file formats

More Information#

There might be more information for this subject on one of the following:

• LDAP Extensions and Controls Listing

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• [#1] - 1.2.840.113556 - Microsoft - based on information observed on 2014-01-02.