---
oid: "0.5"
asn1-notation: "{itu-r(0) r-recommendation(5)}"
description: "International Telecommunication Union - Radiocommunication sector [(ITU-R) Recommendations](http://www.itu.int/pub/R-REC)"
last-modified: "2022-01-04"
tags: [oid-repository]
---

## OID: `0.5`

```asn1
{itu-r(0) r-recommendation(5)}
```

### Description

International Telecommunication Union - Radiocommunication sector [(ITU-R) Recommendations](http://www.itu.int/pub/R-REC)

### Supplementary information

Identifier `r-recommendation` was added by ITU-T Study Group 17 in March 2004 to be used together with the top-level identifier [`itu-r(0)`](https://oid-base.com/get-md/0) for the purpose of OIDs such as `{itu-r(0) r-recommendation(5) ...}`. Consequently, Unicode label `R-Recommendation` can only be used with father Unicode label `ITU-R` in an Internationalized Resource Identifier "OID-IRI". Identifier `r-recommendation` shall not be used as a 'NameForm', *i.e.*, without its associated number `5` (see [Rec. ITU-T X.680 \| ISO/IEC 9834-1](http://itu.int/rec/T-REC-X.680/en), clause A.5, for more details on this specific case).

### Registrant

Name: Kevin Hughes
Address: ITU BR (Radiocommunication Bureau)
Switzerland
Assignment date: 2004-03-19

### Child OIDs

No child OID

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