---
id: mac-vendor-lookup
version: "0.1.15"
license: unclear
license_treatment: permissive
maintenance: aging
---

# mac-vendor-lookup — Find the vendor for a given MAC address

License: permissive · Maintenance: aging · Downloads: 148.6K/mo

## What it is and what it does

mac-vendor-lookup is a Python library that maps MAC addresses to their vendor names using a local copy of the IEEE's OUI (Organizationally Unique Identifier) prefix list. It provides both a synchronous interface for straightforward lookups and an asynchronous interface built on asyncio for non-blocking operations. The library ships with a pre-built vendor list and can optionally download a fresh copy from IEEE when needed.

The package is designed for network administration, device discovery, and hardware identification tasks where you need to determine which manufacturer produced a network interface given its MAC address. It includes a command-line tool for quick lookups and allows customization of the vendor list cache location.

Use it for:

- Identify network device manufacturers in network scanning or inventory tools
- Resolve MAC addresses to vendor names in DHCP or ARP monitoring applications
- Build device discovery systems that classify hardware by manufacturer
- Enrich network logs or packet captures with vendor information
- Implement async MAC lookups in high-throughput network analysis pipelines

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

Resolves MAC addresses to vendor names using a local IEEE OUI prefix list, with both synchronous and asynchronous interfaces.

Yes, if you need MAC-to-vendor resolution. The package is stable, permissively licensed, has minimal dependencies, and supports both sync and async workflows. The aging maintenance status (257 days since last release) is a minor concern but not a blocker—the core functionality is straightforward and unlikely to require frequent updates. No known vulnerabilities.

## Install

pip install mac-vendor-lookup
uv add mac-vendor-lookup
poetry add mac-vendor-lookup

## Installing mac-vendor-lookup

Before you install: Low install friction with only two runtime dependencies (aiofiles, aiohttp). Last release was recent, and the repository remains active with 86 stars, though maintenance status is aging—no updates in 257 days.

License in practice: Licensed under Apache Software License (permissive), imposing no significant restrictions on use or redistribution.

Quickstart:

pip install mac-vendor-lookup

from mac_vendor_lookup import MacLookup

mac = MacLookup()
print(mac.lookup("00:80:41:12:FE"))

Verify before relying:

- Whether the bundled OUI list is current or how frequently it is updated relative to IEEE releases
- Performance characteristics when looking up large batches of MAC addresses
- Whether aiofiles and aiohttp are truly required at runtime or only for async operations

## Package facts

- License: not declared (permissive)
- Python support: supports_current
- Install friction: low
- Maintenance: aging
- Downloads: 148.6K/month (top 15,000 on PyPI)
- Known vulnerabilities: none known

## Tags

MAC address vendor lookup, OUI prefix resolver, network device identification, MAC to vendor name, IEEE OUI database, async MAC address lookup, hardware vendor identification, network-tools, device-identification, async-support

[View on SkillFed](https://skillfed.io/packages/mac-vendor-lookup) · [View on PyPI](https://pypi.org/project/mac-vendor-lookup/)