⚡UtilVox
Networking · Device Identifier

MAC Address Lookup

Instantly map physical MAC addresses to their registered vendor, assignment details, and device anatomy.

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HEXADECIMAL

Supported formats: AA:BB:CC:DD:EE:FF, AA-BB-CC-DD-EE-FF, AABBCCDDEEFF

Identified Manufacturer

Apple, Inc.

MAC Address3C:07:54:12:34:56
OUI Prefix (Organization)3C:07:54
CountryUnited States
Assignment TypeMA-L (Large block)
Private ScopeNo (Global Address)
Multicast ScopeNo (Uni Target)
Hardware ScopePhysical Network Interface Card (NIC) Layer-2 Identifier

Address Anatomy Structure

3C:07:54
OUI
12:34:56
NIC
OUI (3 Bytes)

Organizationally Unique Identifier assigned by IEEE to identify the network hardware manufacturer.

NIC (3 Bytes)

Network Interface Controller specific host adapter index allocated uniquely per device.

Generator

Unicast vs Multicast
Scope Range

Format Converter

Colon Notation
3C:07:54:12:34:56
Hyphen Notation
3C-07-54-12-34-56
Cisco / Dot
3C07.5412.3456
Plain Hex String
3C0754123456

Batch Processor

Process and analyze up to 100 MAC addresses simultaneously.

Technical Overview: What is a MAC Address?

A **Media Access Control (MAC) address** is a unique physical identifier assigned to a network interface controller (NIC) by manufacturers for Layer-2 hardware operations.

Unlike temporary software-assigned IP addresses, physical MAC addresses are permanently "burned into" the network adapter chip at the factory.

Address Space Division

A MAC address consists of **48 bits** (6 octets) represented as twelve hexadecimal characters.

// Anatomy Breakdown

First 3 Bytes (OUI): 3C:07:54 (Apple, Inc.)

Last 3 Bytes (NIC): 12:34:56 (Unique Device ID)

Frequently Asked Questions

Can I change my physical MAC address?
Yes, via software-defined MAC Spoofing. While the hardware chip retains the original factory address, operating systems allow you to mask it with a temporary software-defined address for security and network diagnostic tests.
Is my physical MAC address visible to global websites?
No. MAC addresses operate strictly inside your local area network (Layer 2). Once your packages cross the default gateway router into the wider internet (Layer 3), the MAC indices are stripped out and replaced with standard IP tags.
What is an OUI prefix?
OUI stands for Organizationally Unique Identifier. It consists of the first 3 bytes (24 bits) of a MAC address and acts as a licensed manufacturer identifier issued uniquely by the IEEE.