MAC Address Lookup & Vendor Identifier

Instantly identify the manufacturer of any network device from its MAC address. Search by MAC prefix, full address, or company name — all IEEE block types supported.

❯ MAC: 4C:B0:4A4C-B0-4A-5E-0B-C34CB04A5E0BC34CB0.4A5E.0BC3
❯ Vendor: Type a company name like “Cisco” or “Apple”
Database Statistics
Updated daily from IEEE
33,464
Total Vendors
57,709
Total MAC Addresses
31 May 2026, 02:10 PM IST
Last Updated
904
Total Visits
About This Tool

This tool identifies the manufacturer of any network device from its MAC (Media Access Control) address. The first 3 bytes form an OUI (Organizationally Unique Identifier) registered in the official IEEE database. Enter any MAC address or vendor name to look it up instantly.

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All Formats
Colon, hyphen, Cisco dot and plain hex — all accepted automatically. No manual conversion needed.
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All IEEE Block Types
Covers MA-L (OUI), MA-M, MA-S, CID and IAB assignments from the official IEEE registry.
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Vendor Name Search
Type a company name like "Cisco" or "Apple" to find all their registered MAC prefixes.
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Daily Updates
IEEE OUI database is refreshed every day — always the most current data.
What Is a MAC Address?
Full Guide

A MAC address (Media Access Control address) is a unique 48-bit hardware identifier permanently assigned to every network interface by its manufacturer. It operates at OSI Layer 2 and is used to direct traffic within local networks.

4C
B0
4A
5E
0B
C3
OUI — First 3 bytes
Identifies the manufacturer
NIC — Last 3 bytes
Assigned per device

Example: 4C:B0:4A:5E:0B:C3 — OUI 4C:B0:4A identifies vendor • 5E:0B:C3 is device-specific

MA-L (OUI)
Classic 24-bit block — large manufacturers like Cisco, Apple, Intel.
MA-M / MA-S
28-bit and 36-bit blocks for mid-size and small/IoT vendors.
CID
Company identifier for non-Ethernet protocol contexts.
IAB (Legacy)
36-bit legacy block, replaced by MA-S in 2014. Existing entries still valid.
Read Complete MAC Address Guide
Frequently Asked Questions
Q What is a MAC address lookup?
A MAC address lookup identifies the manufacturer of a network device using its OUI (Organizationally Unique Identifier). The first 3 bytes of any MAC address are registered to a company in the IEEE database. Enter any MAC address to find the vendor instantly and for free.
Q What MAC address formats are supported?
All formats are accepted automatically — colon-separated (4C:B0:4A:5E:0B:C3), hyphen-separated (4C-B0-4A-5E-0B-C3), plain hex (4CB04A5E0BC3), Cisco dot notation (4CB0.4A5E.0BC3), and partial OUI prefixes like 4C:B0:4A. No manual conversion needed.
Q Can I search by vendor or company name?
Yes. Type any company name such as “Cisco”, “Apple”, “Samsung” or “Raspberry Pi” into the search box. The tool returns all MAC address prefixes registered to that organisation in the IEEE OUI database.
Q How accurate is the data?
All data is sourced directly from the official IEEE Standards OUI Registry — the authoritative global database for MAC address assignments. We update the database daily so new vendor registrations appear within 24 hours.
Q What are MA-L, MA-M, MA-S, CID and IAB?
These are the IEEE MAC address block types. MA-L (Large) is the classic 24-bit OUI for large manufacturers like Cisco and Apple. MA-M (Medium) uses 28-bit prefixes for mid-size companies. MA-S (Small) uses 36-bit prefixes for small vendors and IoT devices. CID is for non-Ethernet protocol contexts. IAB is a legacy type replaced by MA-S in 2014.