Zerosuniverse
Tech

MAC Address Vendor OUI Lookup, Bit Analyzer & Spoofing Generator (2026)

Identify network hardware manufacturers from IEEE 24-bit OUI prefixes, inspect Unicast/Multicast and Locally Administered (LAA) randomized MAC bits, convert Cisco dotted notation, and generate OS spoofing commands.

FacebookX (Twitter)WhatsAppLinkedIn
MAC Address Vendor OUI Lookup & Spoofing Command Generator — Interactive Console
Runs locally in your browser • Instant output
OUI Presets:
OUI Manufacturer
Ayecom Technology Co., Ltd. / Cisco OEM (Enterprise Networking)
OUI Prefix: 001A2B
First Octet Bit Flags
Unicast Physical (I/G Bit = 0)
Globally Unique OUI (U/L = 0)
Notation Formats & EUI-64
Cisco: 001a.2b3c.4d5e
IPv6: fe80::021a:2bff:fe3c:4d5e
Cross-Platform MAC Address Spoofing CLI Commands
# Linux (iproute2)
sudo ip link set dev wlan0 down && sudo ip link set dev wlan0 address 00:1A:2B:3C:4D:5E && sudo ip link set dev wlan0 up

# macOS (Airport / en0)
sudo ifconfig en0 ether 00:1A:2B:3C:4D:5E

# Windows PowerShell (Run as Administrator)
Set-NetAdapter -Name "Wi-Fi" -MacAddress "00-1A-2B-3C-4D-5E" -Confirm:$false
Ready
Embed / Cite This Tool (Markdown & HTML)
GitHub / Reddit Markdown Badge[![MAC Address Vendor OUI Lookup & Spoofing Command Generator](https://img.shields.io/badge/ZerosUniverse-Free_Tool-ff6a00)](https://www.zerosuniverse.com/tools/mac-address-oui-vendor-lookup/)
Blog / Documentation HTML Citation<a href="https://www.zerosuniverse.com/tools/mac-address-oui-vendor-lookup/">MAC Address Vendor OUI Lookup & Spoofing Command Generator — ZerosUniverse</a>

2026 Quick-Reference Cheat Sheet & Benchmark Table: MAC Address Vendor OUI Lookup & Spoofing Command Generator

Quick Answer & 2026 Technical Summary (mac address vendor lookup)Updated 2026 Standard

A standard IEEE 802 48-bit (6-byte) MAC address is split into two 24-bit halves: the first 3 bytes (6 hex characters) form the Organizationally Unique Identifier (OUI) assigned to the hardware manufacturer by the IEEE, and the final 3 bytes form the Network Interface Controller (NIC) serial number assigned by that vendor. Use this interactive mac address vendor lookup above to test ieee oui mac vendor finder, mac address spoofing command generator, and locally administered mac address detector locally in your browser with zero server uploads.

Target Keyword Spec: mac address vendor lookup | Modules: IEEE 24-Bit OUI Manufacturer & VM Detector • First-Octet U/L & I/G Bitwise Dissector • 4-Format MAC Converter & SLAAC EUI-64 Calculator
Primary Focus: mac address vendor lookup
Core Capability: ieee oui mac vendor finder
Privacy Mode: 100% Client-Side (Zero Upload)
Technical Parameter / ModuleStandard / Keyword SpecArchitecture & Validation RuleOperational Use Case (2026)
IEEE 24-Bit OUI Manufacturer & VM Detectorieee oui mac vendor finderIdentifies hardware vendors and hypervisors (Apple, Intel, Cisco, Samsung, ...Rogue Device & IoT Identification on Local LANs
First-Octet U/L & I/G Bitwise Dissectormac address spoofing command generatorDecodes Bit 0 (Individual Unicast vs Group Multicast) and Bit 1 (Universall...Public Wi-Fi Privacy & Captive Portal Testing
4-Format MAC Converter & SLAAC EUI-64 Calculatorlocally administered mac address detectorInstantly converts between Colon (`AA:BB:CC:DD:EE:FF`), Hyphen (`AA-BB-CC-D...Network Engineering Format Normalization
Hardware & Protocol Spec Version2026 IEEE / JEDEC / VESA / PCI-SIGHigh-Precision Browser API TelemetryCross-checked against hardware datasheets
Real-Time Measurement LooprequestAnimationFrame / WebAudio / WebGLSub-Millisecond HighResTimeStamp (DOMHighRes)Runs natively on desktop, laptop & mobile browsers
Safety Headroom & Efficiency Factor80 PLUS / PFC 0.8–0.9 / 25% Surge MarginContinuous Load ≤ 75% Rated Peak CapacityPrevents thermal throttling & voltage droop
In-Depth ZerosUniverse Tutorial

What is a MAC Address & How to Find or Spoof It Safely

Read our complete step-by-step editorial guide, architecture breakdown, and defensive best practices on ZerosUniverse.

Read Full Guide

How to Use MAC Address Vendor OUI Lookup & Spoofing Command Generator

01

Enter Any Full MAC Address or 6-Hex OUI Prefix

Paste a MAC address in any format (`00:50:56:C0:00:08`, `00-1A-2B-3C-4D-5E`, or `0050.56c0.0008`) or click a vendor preset.

02

Inspect the Vendor Match & First-Octet Binary Bits

Check the identified manufacturer and look at Bit 1 of the first byte to see if the address is a factory-burned UAA or an iOS/Android randomized Private Wi-Fi address (LAA).

03

Copy Normalized Formats & IPv6 EUI-64 Address

Copy Colon, Hyphen, Cisco Dotted, or the derived IPv6 `fe80::` link-local SLAAC address with a single click.

04

Generate a New MAC & Copy OS Spoofing Commands

Pick a target vendor prefix or LAA random mode, enter your interface name (`eth0`, `wlan0`, `en0`), and copy the Linux, macOS, or Windows PowerShell commands.

Key Capabilities & Technical Architecture

IEEE 24-Bit OUI Manufacturer & VM Detector

Identifies hardware vendors and hypervisors (Apple, Intel, Cisco, Samsung, Raspberry Pi, Espressif IoT, VMware `00:50:56`, VirtualBox `08:00:27`, Docker, QEMU/KVM).

First-Octet U/L & I/G Bitwise Dissector

Decodes Bit 0 (Individual Unicast vs Group Multicast) and Bit 1 (Universally Administered IEEE burned-in OUI vs Locally Administered Private/Randomized MAC).

4-Format MAC Converter & SLAAC EUI-64 Calculator

Instantly converts between Colon (`AA:BB:CC:DD:EE:FF`), Hyphen (`AA-BB-CC-DD-EE-FF`), Cisco Dotted (`aabb.ccdd.eeff`), Raw Hex, and IPv6 Modified EUI-64 (`fe80::`) link-local addresses.

Realistic MAC Generator & Cross-OS Spoofing CLI

Generate valid vendor-prefixed or LAA-compliant random MAC addresses with copy-ready spoofing commands for Linux (`ip link` / `macchanger`), macOS (`ifconfig en0`), and Windows PowerShell.

Practical Use Cases

Rogue Device & IoT Identification on Local LANs

Paste unknown MAC addresses from your router's DHCP client table or `arp -a` output to distinguish smart-home ESP32 sensors, virtual machines, and mobile phones.

Public Wi-Fi Privacy & Captive Portal Testing

Generate Locally Administered (LAA) or vendor-matched MAC addresses and copy exact interface commands to rotate your laptop's hardware address on untrusted networks.

Network Engineering Format Normalization

Convert MAC addresses between Windows `ipconfig /all` hyphen notation, Linux colon notation, and Cisco Catalyst `show mac address-table` dotted-quad format.

Frequently Asked Questions (FAQs)

How is a 48-bit MAC address structured?+

A standard IEEE 802 48-bit (6-byte) MAC address is split into two 24-bit halves: the first 3 bytes (6 hex characters) form the Organizationally Unique Identifier (OUI) assigned to the hardware manufacturer by the IEEE, and the final 3 bytes form the Network Interface Controller (NIC) serial number assigned by that vendor.

How can I tell if a MAC address is randomized (Private Wi-Fi Address on iOS/Android/Windows)?+

Inspect the second hexadecimal character of the first byte (which controls the U/L Locally Administered bit, bit 1). If that second hex digit is `2`, `6`, `A`, or `E` (for example, `DA:A1:19:...` or `02:42:AC:...`), the Locally Administered Address (LAA) bit is set to 1—meaning the MAC is software-generated or randomized for privacy rather than burned into hardware.

Why does MAC address spoofing fail if the first byte is an odd hex number?+

The least significant bit of the first byte (Bit 0, the I/G bit) determines whether a frame is Unicast (`0`, even second hex digit) or Multicast (`1`, odd second hex digit like `1`, `3`, `5`, `7`, `9`, `B`, `D`, `F`). Network interfaces cannot assign a Multicast MAC address as a source hardware address, so `ip link` and `ifconfig` will reject it with `Cannot assign requested address`.

How does IPv6 SLAAC EUI-64 expose a device's hardware MAC address?+

Traditional IPv6 Stateless Address Autoconfiguration (EUI-64) builds the 64-bit interface ID by splitting the 48-bit MAC address in the middle, inserting `FF:FE`, and flipping the 7th bit (the U/L bit). Anyone who sees an EUI-64 IPv6 address (identifiable by `ff:fe` in the middle of the last 64 bits) can reverse the calculation to recover the exact hardware MAC address and vendor.

Does a MAC address travel across the internet past my local router?+

No. MAC addresses operate strictly at Layer 2 (Data Link Layer) within your local Ethernet or Wi-Fi broadcast domain. Every time an IP packet crosses a Layer-3 router hop, the router strips the incoming Layer-2 Ethernet header and encapsulates the packet in a brand-new frame using its own interface MAC address.