MAC Vendor JSON Database

Gain access to our updated and comprehensive MAC address database completely free of charge. The database is available for download in multiple formats to suit your needs: JSON, CSV, and Cisco's "vendorMacs.xml" format.
Choose the format that works best for your project:

Each file contains over 77000 unique MAC prefixes, ensuring you have the most accurate and up-to-date vendor information for your network or development needs.

Unique MAC Prefixes

77800

Last Synchronized

12 November 2026

Daily upstream synchronization

Payload Footprint

~ 6MB

Full JSON array payload

OPEN ACCESS Free Download • Zero Authentication Required

MAC Vendor Database in JSON format

Download the MAC address database over HTTPS. It includes MA-L (24-bit), MA-M (28-bit), MA-S (36-bit), and historical IAB assignments, normalized for easy integration into your software.

Unique MAC address: 77800 Updated: 12 November 2026 Includes Private Masking Flag

Download JSON database (~ 6MB)

How to Use the MAC Vendor Database

Whether you're building network tools, analyzing devices, or integrating MAC address data into your software, our database is designed for easy integration. Simply download the file in your preferred format and start using it right away.

Format

[
  {
    "macPrefix": "00:00:00",
    "vendorName": "XEROX CORPORATION",
    "private": false,
    "blockType": "MA-L",
    "lastUpdate": "2015/11/17"
  }
]

Memory & Ingestion Advisory

The dataset is delivered as a flat JSON array containing 77+ thousand entries. For serverless functions or memory-constrained microservices, use streaming parsers (stream-json in Node.js or ijson in Python) to avoid loading the full buffer into memory.

Attributes

Attribute	Description
macPrefix	MAC address prefix
vendorName	Vendor/Company Name
private	If true: Company name & address will not be displayed on public listing
blockType	MAC address block: • MA-L: MAC Address Block Large (previously named OUI). Number of addresses 2^24 (~16 Million) • MA-M: MAC Address Block Medium. Number of addresses 2^20 (~1 Million) • MA-S: MAC Address Block Small (previously named OUI-36, encompasses IAB Assignments). Number of addresses 2^12 (4096) • CID: Company Identifier. This prefix will not be used for globally unique applications. Number of addresses 2^24 (~16 Million)
lastUpdate	When MAC information was last updated. Format (YYYY/MM/DD)

Complementary Database Formats & API Services

Need tabular structures for SQL ingestion, router-compatible XML, or zero-maintenance REST APIs?

CSV Database ~4.8 MB

Raw comma-separated tabular structure ready for instant ingestion via PostgreSQL COPY, Snowflake, DuckDB, or spreadsheet software.

View CSV Specifications

Cisco vendorMacs.xml XML Spec

Native Cisco vendor database format engineered for direct import into Cisco Prime Infrastructure, Cisco Catalyst Center, and ISE engines.

Download Cisco Schema

REST API v2 Live Query

Query single hardware addresses or batch resolve prefixes in real time without storing or maintaining local filesystem archives.

Explore Developer Docs