---
title: telephoneNumber
description: Phone number in a format complying with the ITU Recommendation E.123, such as +1 415 555 1212.
component: pingds
version: 8.1
page_id: pingds:schemaref:at-telephoneNumber
canonical_url: https://docs.pingidentity.com/pingds/8.1/schemaref/at-telephoneNumber.html
---

# telephoneNumber

Phone number in a format complying with the ITU Recommendation E.123, such as `+1 415 555 1212`.

|                             |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| --------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| *OID*                       | 2.5.4.20                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| *Names*                     | telephoneNumber                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| *Syntax*                    | [TelephoneNumber](s-TelephoneNumber.html)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| *Equality matching rule*    | [telephoneNumberMatch](mr-telephoneNumberMatch.html)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| *Substring matching rule*   | [telephoneNumberSubstringsMatch](mr-telephoneNumberSubstringsMatch.html)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| *Single value*              | false: multiple values allowed                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| *User modification allowed* | true                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| *Usage*                     | userApplications                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
| *Origin*                    | [RFC 4519](https://datatracker.ietf.org/doc/html/rfc4519)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| *Schema file*               | 00-core.ldif                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
| *Used by*                   | [dNSDomain](oc-dNSDomain.html), [dmd](oc-dmd.html), [documentSeries](oc-documentSeries.html), [domain](oc-domain.html), [inetOrgPerson](oc-inetOrgPerson.html), [organization](oc-organization.html), [organizationalPerson](oc-organizationalPerson.html), [organizationalRole](oc-organizationalRole.html), [organizationalUnit](oc-organizationalUnit.html), [person](oc-person.html), [pilotOrganization](oc-pilotOrganization.html), [pilotPerson](oc-pilotPerson.html), [rFC822LocalPart](oc-rFC822LocalPart.html), [residentialPerson](oc-residentialPerson.html), [room](oc-room.html), [sunservicecomponent](oc-sunservicecomponent.html) |