---
title: uidNumber
description: OID
component: pingds
version: 8.1
page_id: pingds:schemaref:at-uidNumber
canonical_url: https://docs.pingidentity.com/pingds/8.1/schemaref/at-uidNumber.html
---

# uidNumber

|                             |                                                                                                                                                                    |
| --------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| *OID*                       | 1.3.6.1.1.1.1.0                                                                                                                                                    |
| *Names*                     | uidNumber                                                                                                                                                          |
| *Description*               | An integer uniquely identifying a user in an administrative domain                                                                                                 |
| *Syntax*                    | [Integer](s-Integer.html)                                                                                                                                          |
| *Equality matching rule*    | [integerMatch](mr-integerMatch.html)                                                                                                                               |
| *Ordering matching rule*    | [integerOrderingMatch](mr-integerOrderingMatch.html)                                                                                                               |
| *Substring matching rule*   | [caseExactSubstringsMatch](mr-caseExactSubstringsMatch.html)                                                                                                       |
| *Single value*              | true                                                                                                                                                               |
| *User modification allowed* | true                                                                                                                                                               |
| *Usage*                     | userApplications                                                                                                                                                   |
| *Origin*                    | [draft-howard-rfc2307bis](https://datatracker.ietf.org/doc/html/draft-howard-rfc2307bis)                                                                           |
| *Schema file*               | 04-rfc2307bis.ldif                                                                                                                                                 |
| *Used by*                   | [nisKeyObject](oc-nisKeyObject.html), [posixAccount](oc-posixAccount.html), [sambaIdmapEntry](oc-sambaIdmapEntry.html), [sambaUnixIdPool](oc-sambaUnixIdPool.html) |