OUI Master Database

The most comprehensive MAC address manufacturer lookup database - 87970+ vendors from IEEE, Nmap, Wireshark, and HDM Mac-Tracker

One master list to rule them all.

Live Demo

Try the online lookup tool: OUI Master Database Lookup

Search by MAC address or manufacturer name - works entirely in your browser!

Quick Download

Just want the data? Download directly:

Format	Size	Best For	Download
TXT	2.5 MB	grep/awk, legacy tools	master_oui.txt
CSV	9.5 MB	Spreadsheets, full data	master_oui.csv
TSV	5.8 MB	Excel/Sheets import	master_oui.tsv
JSON	21 MB	APIs, human-readable	master_oui.json
JSON (compact)	15 MB	Scripts, fast loading	master_oui.min.json
XML	20 MB	Enterprise/Java apps	master_oui.xml
SQLite	18 MB	Ready-to-query database	master_oui.db
SQL	12 MB	Database import script	import-to-d1.sql
Kismet	2.6 MB	Kismet wireless IDS	kismet_manuf.txt
Kismet (gzip)	0.6 MB	Kismet direct install	kismet_manuf.txt.gz

Raw GitHub URLs:

https://raw.githubusercontent.com/Ringmast4r/OUI-Master-Database/main/LISTS/master_oui.csv
https://raw.githubusercontent.com/Ringmast4r/OUI-Master-Database/main/LISTS/master_oui.json
https://raw.githubusercontent.com/Ringmast4r/OUI-Master-Database/main/LISTS/master_oui.txt

What is an OUI?

OUI = Organizationally Unique Identifier

The first 3 bytes (6 hex characters) of a MAC address that identifies the device manufacturer.

Example:

MAC Address:  3C:D9:2B:12:34:56
              └─OUI─┘ └─Device─┘

OUI:          3C:D9:2B
Manufacturer: Hewlett Packard
Device Type:  Computer
Country:      US

Why This Matters:

Device Identification: Know if a WiFi network is from Apple, Samsung, Cisco, etc.
Security Analysis: Identify rogue devices on your network
Network Mapping: Categorize devices by manufacturer and type
Wardriving: Identify access points and their vendors
IoT Discovery: Find all smart home devices, cameras, and appliances

Data Fields

Each OUI entry includes:

Field	Description	Example
OUI	MAC address prefix	`3C:D9:2B`
Manufacturer	Full company name	`Hewlett Packard`
Short Name	Abbreviated name	`HP`
Registry	IEEE assignment type	`MA-L`, `MA-M`, `MA-S`, `IAB`, `CID`
Device Type	Category classification	`Router`, `Phone`, `Camera`, `IoT`, etc.
Address	Company address	`11445 Compaq Center Drive, Houston TX US`
Country	Country code	`US`, `CN`, `DE`, `JP`, etc.
Registered Date	When OUI was first assigned	`2012-05-15`
Sources	Which databases confirmed it	`IEEE+Wireshark+Nmap`

Device Type Categories

The database automatically classifies manufacturers into device types:

Networking: Router, Switch, Access Point, Modem
Consumer: Phone, Computer, Tablet, TV, Gaming, Wearable
Smart Home: IoT, Smart Home, Camera, Thermostat, Appliance
Enterprise: Server, Storage, Industrial, VoIP
Other: Medical, Automotive, Printer, Audio, Media Player

Database Sources

This project combines all IEEE registries plus community databases:

IEEE Official Registries

Registry	Entries	Description
MA-L (Large)	38,630	Traditional 24-bit OUI (~16M addresses each)
MA-M (Medium)	6,189	28-bit blocks (~1M addresses each)
MA-S (Small)	6,827	36-bit blocks (~4K addresses each)
IAB (Individual)	4,575	Individual Address Blocks (legacy)
CID (Company ID)	209	Company identifiers
IEEE Total	56,430

Community Sources

Source	Entries	Description
Wireshark	55,963	Cross-validated with short names
Nmap	49,058	Community-discovered vendors
HDM Mac-Tracker	56,543	Historical registration dates

Final Results

Metric	Count
Total Unique OUIs	88212
Merged Entries	75,353 (verified from multiple sources)

Available Formats

1. TXT - Simple Format

# Format: OUI<tab>Manufacturer
286FB9	Nokia Shanghai Bell Co., Ltd.
08EA44	Extreme Networks Headquarters

Best for: grep, awk, legacy tools, minimal footprint

2. CSV - Full Data

oui,manufacturer,registry,short_name,device_type,registered_date,address,sources
00:00:0C,"Cisco Systems, Inc",MA-L,Cisco,Router,1998-04-22,"170 WEST TASMAN DRIVE SAN JOSE CA US 95134",IEEE+Wireshark+Nmap

Best for: Spreadsheets, databases, full data analysis

3. TSV - Tab-Separated

OUI	Manufacturer	Registry	Short_Name	Device_Type	Country	Sources
00:00:0C	Cisco Systems, Inc	MA-L	Cisco	Router	US	IEEE+Wireshark+Nmap

Best for: Excel/Google Sheets (no CSV quoting issues)

4. JSON - Pretty Printed

{
  "00:00:0C": {
    "manufacturer": "Cisco Systems, Inc",
    "registry": "MA-L",
    "short_name": "Cisco",
    "device_type": "Router",
    "registered_date": "1998-04-22",
    "address": "170 WEST TASMAN DRIVE SAN JOSE CA US 95134",
    "country": "US",
    "sources": ["IEEE", "Wireshark", "Nmap"]
  }
}

Best for: APIs, human-readable config files

5. JSON (Compact) - Single Line

Same as JSON but minified for faster loading in scripts.

6. XML - Enterprise Format

<oui_database>
  <entry>
    <oui>00:00:0C</oui>
    <manufacturer>Cisco Systems, Inc</manufacturer>
    <registry>MA-L</registry>
    <device_type>Router</device_type>
    <country>US</country>
    <sources>IEEE,Wireshark,Nmap</sources>
  </entry>
</oui_database>

Best for: Java applications, enterprise systems, XSLT transforms

7. SQLite - Ready to Query

Pre-built database file with indexes. Just download and query:

sqlite3 LISTS/master_oui.db "SELECT * FROM oui_registry WHERE oui = '00:00:0C'"
sqlite3 LISTS/master_oui.db "SELECT * FROM oui_registry WHERE device_type = 'Router'"
sqlite3 LISTS/master_oui.db "SELECT device_type, COUNT(*) FROM oui_registry GROUP BY device_type"

8. SQL - Import Script

CREATE TABLE oui_registry (...);
INSERT INTO oui_registry VALUES ...;

Best for: PostgreSQL, MySQL, Cloudflare D1, custom databases

9. Kismet - Wireless IDS Format

# Format: OUI<tab>Manufacturer (sorted)
00:00:00	Officially Xerox, but 0:0:0:0:0:0 is more common
00:00:01	Xerox Corporation
00:00:0C	Cisco Systems, Inc

Best for: Kismet wireless IDS manufacturer lookups

10. Kismet (gzip) - Ready to Install

Pre-compressed for direct installation:

# Install on Kismet system
sudo cp kismet_manuf.txt.gz /usr/share/kismet/kismet_manuf.txt.gz
sudo systemctl restart kismet

Generate Fresh Database

Requirements:

Node.js 14+
curl/bash (for downloading)
Internet connection

Step 1: Clone Repository

git clone https://github.com/Ringmast4r/OUI-Master-Database.git
cd OUI-Master-Database
npm install

Step 2: Download Latest Sources

bash download-sources.sh

Downloads from IEEE (all 5 registries), Wireshark, Nmap, and HDM Mac-Tracker.

Step 3: Merge into Master Database

node merge-oui-databases.js

Windows users: Just double-click update-database.bat

Usage Examples

1. Command Line Lookup (TXT format)

# Simple grep lookup
grep "3CD92B" LISTS/master_oui.txt

# Find all Apple devices
grep -i "apple" LISTS/master_oui.txt | head -20

# Count entries
wc -l LISTS/master_oui.txt

2. SQLite Direct Query

# Lookup by OUI
sqlite3 LISTS/master_oui.db "SELECT * FROM oui_registry WHERE oui = '3C:D9:2B'"

# Find all routers
sqlite3 LISTS/master_oui.db "SELECT oui, manufacturer FROM oui_registry WHERE device_type = 'Router'"

# Count by device type
sqlite3 LISTS/master_oui.db "SELECT device_type, COUNT(*) FROM oui_registry GROUP BY device_type ORDER BY COUNT(*) DESC"

# Find all US companies
sqlite3 LISTS/master_oui.db "SELECT oui, manufacturer FROM oui_registry WHERE country = 'US' LIMIT 20"

3. Python Script

import json

# Load OUI database
with open('LISTS/master_oui.min.json') as f:
    oui_db = json.load(f)

# Lookup function
def identify_device(mac):
    oui = mac[:8].upper()
    entry = oui_db.get(oui, {})
    return {
        'manufacturer': entry.get('manufacturer', 'Unknown'),
        'device_type': entry.get('device_type'),
        'country': entry.get('country')
    }

result = identify_device('00:00:0C:12:34:56')
print(result)
# {'manufacturer': 'Cisco Systems, Inc', 'device_type': 'Router', 'country': 'US'}

4. JavaScript / Node.js

const ouiDB = require('./LISTS/master_oui.json');

function lookupMAC(mac) {
    const oui = mac.substring(0, 8).toUpperCase();
    return ouiDB[oui] || { manufacturer: 'Unknown' };
}

console.log(lookupMAC('00:00:0C:12:34:56'));
// {
//   manufacturer: 'Cisco Systems, Inc',
//   device_type: 'Router',
//   country: 'US',
//   registered_date: '1998-04-22',
//   sources: ['IEEE', 'Wireshark', 'Nmap']
// }

5. curl/wget Direct Access

# Download latest
curl -O https://raw.githubusercontent.com/Ringmast4r/OUI-Master-Database/main/LISTS/master_oui.txt

# Lookup in one command
curl -s https://raw.githubusercontent.com/Ringmast4r/OUI-Master-Database/main/LISTS/master_oui.txt | grep "00000C"

Update Schedule

Recommended: Run monthly to stay current with new OUI assignments.

Automated Updates (Cron Job)

# Update first day of every month at midnight
0 0 1 * * cd /path/to/OUI-Master-Database && bash download-sources.sh && node merge-oui-databases.js

IEEE assigns ~500-1000 new OUIs per month, so monthly updates recommended.

CLI Tool

Cross-platform offline command-line lookup with network scanning!

Works on Windows, Linux, and macOS - just needs Node.js.

Quick Start

cd "CLI TOOL"

# Windows - double-click oui-lookup.bat or:
node oui-lookup.js --interactive

# Linux/macOS:
node oui-lookup.js --interactive

Features

Command	Description
`--wifi`	Scan nearby WiFi networks
`--bluetooth`	Scan Bluetooth devices
`--arp`	Show ARP table with vendors
`--search <term>`	Search by manufacturer
`--stats`	Database statistics
`--interactive`	Continuous lookup mode

Command Line Usage

# Look up a MAC address
node oui-lookup.js 00:00:0C:12:34:56

# Search by manufacturer
node oui-lookup.js --search cisco

# Scan WiFi networks (triggers real scan)
node oui-lookup.js --wifi

# Scan Bluetooth devices
node oui-lookup.js --bluetooth

# Show local network devices (ARP table)
node oui-lookup.js --arp

Platform Support

Feature	Windows	Linux	macOS
WiFi Scan	`netsh wlan`	`nmcli`	`airport`
Bluetooth	PowerShell	`bluetoothctl`	`system_profiler`
ARP Table	`arp -a`	`arp -a`	`arp -a`

Example Output

------------------------------------------------------------
MAC Address:    00:00:0C:12:34:56
OUI:            00:00:0C
Manufacturer:   Cisco Systems, Inc
Short Name:     Cisco
Device Type:    Router
Country:        US
Address:        170 WEST TASMAN DRIVE SAN JOSE CA US 95134
Registry:       MA-L
Registered:     1998-04-22
Sources:        IEEE, Wireshark, Nmap

Project Structure

OUI-Master-Database/
├── index.html                   # Web lookup interface
├── README.md                    # This file
├── QUICK-START.md              # Quick start guide
├── download-sources.sh          # Download all databases
├── merge-oui-databases.js       # Merge into master list
├── update-database.bat          # Windows updater
├── package.json                 # Node.js dependencies
│
├── CLI TOOL/                    # Cross-platform CLI lookup tool
│   ├── oui-lookup.js           # Main CLI script (Windows/Linux/macOS)
│   ├── oui-lookup.bat          # Windows launcher
│   └── README.md               # CLI documentation
│
├── sources/                     # Raw downloaded databases (gitignored)
│   ├── ieee_mal.csv            # IEEE MA-L (Large)
│   ├── ieee_mam.csv            # IEEE MA-M (Medium)
│   ├── ieee_mas.csv            # IEEE MA-S (Small)
│   ├── ieee_iab.csv            # IEEE IAB
│   ├── ieee_cid.csv            # IEEE CID
│   ├── wireshark_manuf.txt     # Wireshark database
│   ├── nmap_prefixes.txt       # Nmap database
│   └── mac_tracker_history.json # HDM registration dates
│
└── LISTS/                       # Generated master files
    ├── master_oui.txt          # Simple format
    ├── master_oui.csv          # Full CSV
    ├── master_oui.tsv          # Tab-separated
    ├── master_oui.json         # Pretty JSON
    ├── master_oui.min.json     # Compact JSON
    ├── master_oui.xml          # XML format
    ├── master_oui.db           # SQLite database
    ├── import-to-d1.sql        # SQL import script
    ├── kismet_manuf.txt        # Kismet IDS format (sorted)
    ├── kismet_manuf.txt.gz     # Kismet gzipped (ready to install)
    └── stats.txt               # Merge statistics

Use Cases

Network Security

Identify unauthorized devices on your network
Detect spoofed MAC addresses (check "Is Private" flag)
Audit network device inventory by type

Wardriving

Identify access point manufacturers
Map network infrastructure by vendor
Analyze WiFi network distribution by country

IoT Discovery

Find all smart home devices
Identify security cameras
Discover printers and networked appliances

Network Analysis

Categorize traffic by device type
Generate vendor and country statistics
Create network topology maps

Educational

Learn about MAC address structure
Understand IEEE OUI assignments
Explore device manufacturer landscape

Data Sources & Credits

IEEE Registration Authority (Official)

Source: https://standards-oui.ieee.org/
License: Public domain
Registries: MA-L, MA-M, MA-S, IAB, CID

Nmap MAC Prefixes

Source: https://github.com/nmap/nmap/raw/master/nmap-mac-prefixes
License: Modified GPLv2
Maintained by: Nmap Project

Wireshark Manufacturer Database

Source: https://www.wireshark.org/download/automated/data/manuf.gz
License: GPLv2
Maintained by: Wireshark Team

HDM Mac-Tracker (Historical Data)

Source: https://github.com/hdm/mac-tracker
License: MIT
Provides: Historical registration dates

License

IEEE Data: Public domain (official registry)
Wireshark Data: GPLv2
Nmap Data: Modified GPLv2
HDM Mac-Tracker: MIT
This Project: MIT License

You are free to:

Use commercially
Modify and redistribute
Use in proprietary software

Contributing

Want to add more OUI sources or improve the scripts? PRs welcome!

How to contribute:

Fork the repository
Add your improvements
Submit a pull request

Ideas for contributions:

Add more device type classifications
Improve country code detection
Add new data sources
Create API wrapper libraries

Support

Issues: https://github.com/Ringmast4r/OUI-Master-Database/issues
Pull Requests: https://github.com/Ringmast4r/OUI-Master-Database/pulls

Related Projects

WiFi Mothership: https://wifimothership.com/ - Global wardriving network
Wireshark: https://www.wireshark.org/
Nmap: https://nmap.org/
HDM Mac-Tracker: https://github.com/hdm/mac-tracker

Last Updated: 2026-04-01 Total OUIs: 88212+ Formats Available: 10 Device Types: 20+ categories Maintained by: @Ringmast4r

Name		Name	Last commit message	Last commit date
Latest commit History 31 Commits
.github/workflows		.github/workflows
CLI TOOL		CLI TOOL
LISTS		LISTS
.gitignore		.gitignore
OUI Master Database.png		OUI Master Database.png
QUICK-START.md		QUICK-START.md
README.md		README.md
download-sources.sh		download-sources.sh
index.html		index.html
merge-oui-databases.js		merge-oui-databases.js
package-lock.json		package-lock.json
package.json		package.json
update-database.bat		update-database.bat

Folders and files

Latest commit

History

Repository files navigation

OUI Master Database

Live Demo

Quick Download

What is an OUI?

Example:

Why This Matters:

Data Fields

Device Type Categories

Database Sources

IEEE Official Registries

Community Sources

Final Results

Available Formats

1. TXT - Simple Format

2. CSV - Full Data

3. TSV - Tab-Separated

4. JSON - Pretty Printed

5. JSON (Compact) - Single Line

6. XML - Enterprise Format

7. SQLite - Ready to Query

8. SQL - Import Script

9. Kismet - Wireless IDS Format

10. Kismet (gzip) - Ready to Install

Generate Fresh Database

Requirements:

Step 1: Clone Repository

Step 2: Download Latest Sources

Step 3: Merge into Master Database

Usage Examples

1. Command Line Lookup (TXT format)

2. SQLite Direct Query

3. Python Script

4. JavaScript / Node.js

5. curl/wget Direct Access

Update Schedule

Automated Updates (Cron Job)

CLI Tool

Quick Start

Features

Command Line Usage

Platform Support

Example Output

Project Structure

Use Cases

Network Security

Wardriving

IoT Discovery

Network Analysis

Educational

Data Sources & Credits

IEEE Registration Authority (Official)

Nmap MAC Prefixes

Wireshark Manufacturer Database

HDM Mac-Tracker (Historical Data)

License

Contributing

Support

Related Projects

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