Object identifier

Syntax and lexicon

• 0: ITU-T
• 1: ISO
• 2: joint-iso-itu-t

• 1 ISO
• 1.3 identified-organization,
• 1.3.6 dod,
• 1.3.6.1 internet,
• 1.3.6.1.4 private,
• 1.3.6.1.4.1 IANA enterprise numbers,
• 1.3.6.1.4.1.343 Intel Corporation

• iso.identified-organization.dod.internet.private.enterprise.intel

Usage

• In computer security, OIDs serve to name almost every object type in X.509 certificates, such as components of Distinguished Names, CPSs, etc.
• Within X.500 and LDAP schemas and protocols, OIDs uniquely name each attribute type and object class, and other elements of schema.
• In Simple Network Management Protocol, each node in a Management Information Base is identified by an OID.
• IANA assigns Private Enterprise Numbers to companies and other organizations under the 1.3.6.1.4.1 node. OIDs down-tree from these are among the most commonly seen; for example, within SNMP MIBs, as LDAP attributes, and as vendor suboptions in the Dynamic Host Configuration Protocol.
• In the United States, Health Level Seven, a standards-developing organization in the area of electronic health care data exchange, is the assigning authority at the 2.16.840.1.113883 node. HL7 maintains its own , and as of January 1, 2008 it contained almost 3,000 nodes, most of them under the HL7 root.
• DICOM uses OIDs.
• The Centers for Disease Control and Prevention uses OIDs to manage the many complex values sets or "vocabularies" used in the Public Health Information Network Vocabulary Access and Distribution System.
• In Microsoft's COM and DCOM, OBJREFs have an object identifier field.

  Citations