Enumeration syntax is a 4-byte signed int and could be represented as 1.3.6.1.4.1.1466.115.121.1.27 (RFC 2252) Integer
Enumeration syntax is found in the schema for the regarding attribute. This OID is described in the Microsoft Active Directory Technical Specification MSADTS. Enumeration syntax corresponds with the 1.3.6.1.4.1.1466.115.121.1.27 syntax.[2]
Enumeration syntax is, as far as LDAPWiki can determine, exclusively used in Microsoft Active Directory.