---
type: SNMP Concept
title: "Enterprise OIDs (1.3.6.1.4.1): Vendor Numbers Explained"
description: "Private enterprise numbers, vendor OID roots, IANA PENs, and how to use enterprise OIDs in monitoring."
resource: "https://snmp-monitoring.info/what-is-snmp/oid/enterprise/"
tags: [what-is-snmp]
timestamp: 2026-07-10T00:00:00Z
---

# Enterprise OIDs (1.3.6.1.4.1): Vendor Numbers Explained

Private enterprise numbers, vendor OID roots, IANA PENs, and how to use enterprise OIDs in monitoring.

## Related concepts

- Up: [What Is an OID in SNMP? Object Identifiers Explained](/what-is-snmp/oid/index.md)

## Frequently asked questions

### What is 1.3.6.1.4.1?

The private enterprises branch of the OID tree—root for vendor/organization PENs and their enterprise MIBs.

### What is a private enterprise number?

A PEN is an integer assigned by IANA identifying an organization under 1.3.6.1.4.1. Registration is free.

### How do I get an enterprise OID?

Apply to IANA for a PEN, then define objects under 1.3.6.1.4.1.<yourPEN> in your MIB modules. You don’t buy a random number off a blog.

### Where do I find a vendor's OID?

IANA registry for the PEN; vendor MIB/docs for leaves; confirm with snmpwalk / MIB browser on real gear.

## Source

Concept generated from https://snmp-monitoring.info/what-is-snmp/oid/enterprise/ — the SNMP Monitoring vendor-neutral knowledge base. Content is limited to what that page states (no external claims added here).