MAC Address Lookup
Look up any MAC address to find the device manufacturer, vendor name and OUI prefix. Supports all common MAC formats — colon, dash or dot separated.
Well-Known OUI Prefixes
00:50:56
VMware virtual machines
08:00:27
VirtualBox virtual machines
00:1A:2B
Various vendors (example)
B8:27:EB
Raspberry Pi Foundation
DC:A6:32
Raspberry Pi Foundation (newer)
00:0C:29
VMware workstation
FC:FB:FB
Cisco Systems
00:16:3E
Xensource / Citrix
00:05:69
VMware (legacy)
28:CF:E9
Apple, Inc.
What is a MAC address?+
A MAC (Media Access Control) address is a unique hardware identifier assigned to every network interface by the manufacturer. It is 48 bits (6 bytes) long, displayed as 12 hexadecimal characters separated by colons or dashes. The first 24 bits identify the vendor (OUI) and the last 24 bits are the device serial number.
What is an OUI?+
An OUI (Organizationally Unique Identifier) is the first three octets (24 bits) of a MAC address, assigned by the IEEE to hardware manufacturers. It uniquely identifies the company that made the network interface. For example, all Apple devices have certain OUI prefixes registered to Apple, Inc.
Can a MAC address be changed?+
Yes — MAC addresses can be spoofed in software. Modern operating systems including Windows, macOS, iOS and Android randomly generate MAC addresses by default for privacy reasons (to prevent tracking across networks). The physical MAC burned into the hardware by the manufacturer is called the "burned-in address" (BIA).
Why is my MAC address private/randomized?+
iOS 14+, Android 10+, Windows 10+ and macOS 10.15+ use random MAC addresses by default when connecting to Wi-Fi networks. This prevents networks from tracking your device across locations. You may need to disable MAC randomisation for networks that use MAC address filtering.