---
oid: "2"
asn1-notation: "{joint-iso-itu-t(2)}"
description: "Areas of joint work between ISO/IEC (International Organization for Standardization/International Electrotechnical Commission) and ITU‑T (International Telecommunication Union – Telecommunication standardization sector), and other international work"
last-modified: "2026-04-14"
tags: [oid-repository]
---

## OID: `2`

```asn1
{joint-iso-itu-t(2)}
```

### Description

Areas of joint work between ISO/IEC (International Organization for Standardization/International Electrotechnical Commission) and ITU‑T (International Telecommunication Union – Telecommunication standardization sector), and other international work

**Classification**: Standards development organization (SDO)

### Supplementary information

This OID was allocated by [Rec. ITU-T X.660](https://itu.int/ITU-T/X.660) \| ISO/IEC 9834-1.
This OID is jointly administered by ISO and ITU-T according to [Rec. ITU-T X.662](https://itu.int/ITU-T/X.662) \| ISO/IEC 9834-3 "Procedures for the Operation of OSI Registration Authorities: Registration of Object Identifier Arcs for Joint ISO and ITU-T Work". As a consequence, all requests for registration must be jointly approved by ITU-T Study Group 17 and ISO/IEC JTC 1/SC 6. Child OIDs are recorded in the [Register of arcs beneath the root arc with primary integer value `2`](https://itu.int/go/X660).
New child OIDs will be allocated a number greater than `47`, except if there is a good rationale that a compact binary encoding is needed, in which case a number less or equal to `47` can be allocated so that the OID encodes on a single octet.

### Registrant

Name: ITU-T SG17 & ISO/IEC JTC 1/SC 6

### Child OIDs

- [OID `2.0`](https://oid-base.com/get-md/2.0): `presentation(0)`
- [OID `2.1`](https://oid-base.com/get-md/2.1): `asn1(1)`
- [OID `2.2`](https://oid-base.com/get-md/2.2): `association-control(2)`
- [OID `2.3`](https://oid-base.com/get-md/2.3): `reliable-transfer(3)`
- [OID `2.4`](https://oid-base.com/get-md/2.4): `remote-operations(4)`
- [OID `2.5`](https://oid-base.com/get-md/2.5): `ds(5)`
- [OID `2.6`](https://oid-base.com/get-md/2.6): `mhs(6)`
- [OID `2.7`](https://oid-base.com/get-md/2.7): `ccr(7)`
- [OID `2.8`](https://oid-base.com/get-md/2.8): `oda(8)`
- [OID `2.9`](https://oid-base.com/get-md/2.9): `ms(9)`
- [OID `2.10`](https://oid-base.com/get-md/2.10): `transaction-processing(10)`
- [OID `2.11`](https://oid-base.com/get-md/2.11): `dor(11)`
- [OID `2.12`](https://oid-base.com/get-md/2.12): `reference-data-transfer(12)`
- [OID `2.13`](https://oid-base.com/get-md/2.13): `network-layer(13)`
- [OID `2.14`](https://oid-base.com/get-md/2.14): `transport-layer(14)`
- [OID `2.15`](https://oid-base.com/get-md/2.15): `datalink-layer(15)`
- [OID `2.16`](https://oid-base.com/get-md/2.16): `country(16)`
- [OID `2.17`](https://oid-base.com/get-md/2.17): `registration-procedures(17)`
- [OID `2.18`](https://oid-base.com/get-md/2.18): `physical-layer(18)`
- [OID `2.19`](https://oid-base.com/get-md/2.19): `mheg(19)`
- [OID `2.20`](https://oid-base.com/get-md/2.20): `genericULS(20)`
- [OID `2.21`](https://oid-base.com/get-md/2.21): `transport-layer-security-protocol(21)`
- [OID `2.22`](https://oid-base.com/get-md/2.22): `network-layer-security-protocol(22)`
- [OID `2.23`](https://oid-base.com/get-md/2.23): `international-organizations(23)`
- [OID `2.24`](https://oid-base.com/get-md/2.24): `sios(24)`
- [OID `2.25`](https://oid-base.com/get-md/2.25): `uuid(25)`
- [OID `2.26`](https://oid-base.com/get-md/2.26): `odp(26)`
- [OID `2.27`](https://oid-base.com/get-md/2.27): `tag-based(27)`
- [OID `2.28`](https://oid-base.com/get-md/2.28): `its(28)`
- [OID `2.40`](https://oid-base.com/get-md/2.40): `upu(40)`
- [OID `2.41`](https://oid-base.com/get-md/2.41): `bip(41)`
- [OID `2.42`](https://oid-base.com/get-md/2.42): `telebiometrics(42)`
- [OID `2.48`](https://oid-base.com/get-md/2.48): `cybersecurity(48)`
- [OID `2.49`](https://oid-base.com/get-md/2.49): `alerting(49)`
- [OID `2.50`](https://oid-base.com/get-md/2.50): `ors(50)`
- [OID `2.51`](https://oid-base.com/get-md/2.51): `gs1(51)`
- [OID `2.52`](https://oid-base.com/get-md/2.52): `uav(52)`
- [OID `2.999`](https://oid-base.com/get-md/2.999): `example(999)`

This is a [frozen OID](https://oid-base.com/faq.htm#leaf) (no more child OIDs can be added to the existing ones).

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