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Reference

LDAP OID Reference

Every LDAP control, extended operation, attribute type, object class, syntax, and matching rule, indexed by its object identifier and cross-referenced to the RFC that defines it. Search by number or by name.

Browse by category

42

Controls

Controls change how a single LDAP operation behaves. A client attaches one to a request; a server advertises the ones it honors in the root DSE supportedControl attribute.

35

Extended operations

Extended operations add capabilities the core protocol never defined, from StartTLS to Password Modify. Servers list what they support in supportedExtension.

7

Features

Features flag optional protocol behavior a server implements. They surface in the root DSE supportedFeatures attribute.

1

Unsolicited notifications

Messages a server sends without a matching client request, such as the Notice of Disconnection.

4480

Attribute types

The fields an entry can hold: cn, mail, uidNumber, and several hundred more. Each has a syntax, matching rules, and an OID.

1034

Object classes

Object classes define which attributes an entry may and must carry, from top down to inetOrgPerson and posixAccount.

48

Syntaxes

Syntaxes define how an attribute value is encoded and compared, from Directory String to Generalized Time.

52

Matching rules

Matching rules tell the server how to compare values for a syntax: equality, ordering, and substring.

11

Name forms

Name forms specify which attributes an entry of a given structural object class may use in its RDN.

6

Administrative roles

Administrative roles mark the subtrees where an administrative model (access control, collective attributes, subschema) applies, per RFC 3672.

1222

Algorithms & PKI

Cryptographic algorithm identifiers, X.509 certificate extensions, elliptic curves, and other PKI object identifiers from OpenSSL's registry. Not LDAP schema, but constantly met alongside it in TLS and certificates.

4

Other

OIDs that do not fall into one of the standard LDAP categories.

Browse by arc

Grouped by who allocated the number, from standards bodies to individual vendors.

1546

Microsoft

1.2.840.113556

1143

Netscape / 389

2.16.840.1.113730

704

OpenDS / OpenDJ

1.3.6.1.4.1.26027

389

IETF / IANA

1.3.6.1.1

269

ForgeRock / OpenDJ

1.3.6.1.4.1.36733

207

OpenLDAP

1.3.6.1.4.1.4203

192

ITU-T (X.500)

2.5

185

PKIX (RFC 5280)

1.3.6.1.5.5.7

179

RSA Data Security

1.2.840.113549

135

Apple Open Directory

1.3.6.1.4.1.63.1000

132

FreeRADIUS

1.3.6.1.4.1.11344

100

Sun / Netscape

1.3.6.1.4.1.42.2.27

93

SAMBA Team

1.3.6.1.4.1.7165

91

NIST algorithms

2.16.840.1.101.3.4

77

Asterisk / Digium

1.3.6.1.4.1.22736

76

DHCP schema (Novell arc)

2.16.840.1.113719.1.203

72

COSINE

0.9.2342.19200300

68

Port Community Rotterdam

1.3.6.1.4.1.3317

59

ISODE (LDAP arc)

1.3.6.1.4.1.1466

53

X.509 certificate extensions

2.5.29

50

dNSDomain2 (Uninett)

1.3.6.1.4.1.2428.20

50

Kerberos schema (Novell arc)

2.16.840.1.113719.1.301

47

IBM

1.3.18

46

Kopano

1.3.6.1.4.1.47732

42

ANSI X9.62 (elliptic curve)

1.2.840.10045

40

Certicom / SECG (EC)

1.3.132

40

Daniel Ellard

1.3.6.1.4.1.31103

35

qmail-ldap project

1.3.6.1.4.1.7914

30

TERENA / GEANT (SCHAC)

1.3.6.1.4.1.25178

24

PADL Software Pty Ltd

1.3.6.1.4.1.5322

20

Hewlett-Packard

1.3.6.1.4.1.11

18

mozilla.org

1.3.6.1.4.1.13769

17

Microsoft

1.3.6.1.4.1.311

15

OIW SECSIG (legacy)

1.3.14.3.2

15

Internet2 (eduPerson)

1.3.6.1.4.1.5923

13

Isode Limited

1.3.6.1.4.1.453

11

sudo (Aaron Spangler)

1.3.6.1.4.1.15953

11

Sequanux

1.3.6.1.4.1.27080

10

interQ, Inc.

1.3.6.1.4.1.6981

9

Centro Tecnico per la Rete Unitaria della Pubblica Amministrazione

1.3.6.1.4.1.16572

8

SrvLoc.Org

1.3.6.1.4.1.6252

6

IGH Ingenieurgesellschaft Höpfner mbH

1.3.6.1.4.1.15347

6

University of Michigan

1.3.6.1.4.1.250

5

MIT

1.2.840.113554

5

Red Hat

1.3.6.1.4.1.2312

4

Google, Inc.

1.3.6.1.4.1.11129

4

Kudelski SA

1.3.6.1.4.1.1722

4

3A Systems, LLC

1.3.6.1.4.1.60142

3

Reed-Matthews, Inc.

1.3.6.1.4.1.7628

2

OpenSSH (LPK)

1.3.6.1.4.1.24552

2

stroeder.com

1.3.6.1.4.1.5427

2

SuSE Linux AG

1.3.6.1.4.1.7057

2

Novell / NetIQ

2.16.840.1.113719

1

ANSI X9.42 (Diffie-Hellman)

1.2.840.10046

1

NxNetworks

1.3.6.1.4.1.1

1

Double Precision, Inc.

1.3.6.1.4.1.10018

1

Free Software Foundation

1.3.6.1.4.1.11591

1

Ascom

1.3.6.1.4.1.188

1

Digital Data Security

1.3.6.1.4.1.3029

1

Wi-SUN Alliance, Inc

1.3.6.1.4.1.45605

6942 OIDs, sourced from the IANA LDAP Parameters registry. More categories and vendor schema (including Active Directory) are being added.