---
oid: "1.3.6.1.5.5.7.21"
description: "Proxy certificate policy languages"
last-modified: "2024-05-13"
parent-oid: "1.3.6.1.5.5.7"
---

## OID: `1.3.6.1.5.5.7.21`

```asn1
{iso(1) identified-organization(3) dod(6) internet(1) security(5) mechanisms(5) pkix(7) id-ppl(21)}
```

### Description

Proxy certificate policy languages

### Supplementary information

See IETF [RFC 7299](https://www.rfc-editor.org/rfc/rfc7299.html) and the [register of child OIDs](https://www.iana.org/assignments/smi-numbers/smi-numbers.xhtml#smi-numbers-1.3.6.1.5.5.7.21). 
 
See also IETF [RFC 3820](http://tools.ietf.org/html/rfc3820.html).

### Registrant

Name: Russ Housley, Sean Turner

### Child OIDs

- `1.3.6.1.5.5.7.21.0`: `id-ppl-anyLanguage(0)`
- `1.3.6.1.5.5.7.21.1`: `id-ppl-inheritAll(1)`
- `1.3.6.1.5.5.7.21.2`: `id-ppl-independent(2)`

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[Terms of use](https://oid-base.com/disclaimer.htm.md)