An OID corresponds to a node in the "OID tree" or hierarchy, which is formally defined using the ITU's OID standard, X.660. The root of the tree contains the following three arcs:
Each node in the tree is represented by a series of integers separated by periods, corresponding to the path from the root through the series of ancestor nodes, to the node. Thus, an OID denoting Intel Corporation appears as follows,
1.3.6.1.4.1.343
and corresponds to the following path through the OID tree:
Each node in the tree is controlled by an assigning authority, which may define child nodes under the node and delegate assigning authority for the child nodes. Continuing with the example, the node numbers under root node "1" are assigned by ISO; the nodes under "1.3.6" are assigned by the US Department of Defense; the nodes under "1.3.6.1.4.1" are assigned by IANA; the nodes under "1.3.6.1.4.1.343" are assigned by Intel Corporation, and so forth.
IANA assigns Private Enterprise Numbers (PEN) 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 (DHCP).
In the United States, Health Level Seven (HL7), a standards-developing organization in the area of electronic health care data exchange, is the assigning authority at the 2.16.840.1.113883 (joint-iso-itu-t.country.us.organization.hl7) node. HL7 maintains its own OID registry, and as of December 1, 2020 it contained almost 20,000 nodes, most of them under the HL7 root.
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 (PHIN) Vocabulary Access and Distribution System (VADS).
Harald Tveit Alvestrand's Object Identifier Registry
IANA Private Enterprise Numbers
HL7 OID registry
Obtaining an Object Identifier
January 10, 2023
object, identifier, computing, object, identifiers, oids, identifier, mechanism, standardized, international, telecommunication, union, naming, object, concept, thing, with, globally, unambiguous, persistent, name, contents, syntax, lexicon, usage, also, refer. In computing object identifiers or OIDs are an identifier mechanism standardized by the International Telecommunication Union ITU and ISO IEC for naming any object concept or thing with a globally unambiguous persistent name 1 Contents 1 Syntax and lexicon 2 Usage 3 See also 4 References 5 External linksSyntax and lexicon EditAn OID corresponds to a node in the OID tree or hierarchy which is formally defined using the ITU s OID standard X 660 The root of the tree contains the following three arcs 0 ITU T 1 ISO 2 joint iso itu tEach node in the tree is represented by a series of integers separated by periods corresponding to the path from the root through the series of ancestor nodes to the node Thus an OID denoting Intel Corporation appears as follows 1 3 6 1 4 1 343and corresponds to the following path through the OID tree 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 CorporationA textual representation of the OID paths is also commonly seen for example iso identified organization dod internet private enterprise intelEach node in the tree is controlled by an assigning authority which may define child nodes under the node and delegate assigning authority for the child nodes Continuing with the example the node numbers under root node 1 are assigned by ISO the nodes under 1 3 6 are assigned by the US Department of Defense the nodes under 1 3 6 1 4 1 are assigned by IANA the nodes under 1 3 6 1 4 1 343 are assigned by Intel Corporation and so forth Usage EditIn 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 SNMP each node in a management information base MIB is identified by an OID IANA assigns Private Enterprise Numbers PEN 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 DHCP In the United States Health Level Seven HL7 a standards developing organization in the area of electronic health care data exchange is the assigning authority at the 2 16 840 1 113883 joint iso itu t country us organization hl7 node HL7 maintains its own OID registry and as of December 1 2020 it contained almost 20 000 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 PHIN Vocabulary Access and Distribution System VADS See also EditDigital object identifier Extended Validation Certificate International Geo Sample Number LSID Persistent Object Identifier Surrogate key Uniform Resource Name Universally Unique IdentifierReferences Edit Object Identifier Repository External links EditObject Identifier Repository Global OID reference database Harald Tveit Alvestrand s Object Identifier Registry IANA Private Enterprise Numbers HL7 OID registry Obtaining an Object Identifier Retrieved from https en wikipedia org w index php title Object identifier amp oldid 1122234683, wikipedia, wiki, book, books, library,
