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.Documentation & FAQs ↓

MAC Address Vendor OUI Lookup & Spoofing Command Generator — Interactive Console

Runs locally in your browser • Instant output

OUI Presets:

MAC Address (Colon, Hyphen, or Cisco Dot)

Target Network Interface

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

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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 / Module	Standard / Keyword Spec	Architecture & Validation Rule	Operational Use Case (2026)
IEEE 24-Bit OUI Manufacturer & VM Detector	`ieee oui mac vendor finder`	Identifies hardware vendors and hypervisors (Apple, Intel, Cisco, Samsung, ...	Rogue Device & IoT Identification on Local LANs
First-Octet U/L & I/G Bitwise Dissector	`mac address spoofing command generator`	Decodes 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 Calculator	`locally administered mac address detector`	Instantly converts between Colon (`AA:BB:CC:DD:EE:FF`), Hyphen (`AA-BB-CC-D...	Network Engineering Format Normalization
Hardware & Protocol Spec Version	`2026 IEEE / JEDEC / VESA / PCI-SIG`	High-Precision Browser API Telemetry	Cross-checked against hardware datasheets
Real-Time Measurement Loop	`requestAnimationFrame / WebAudio / WebGL`	Sub-Millisecond HighResTimeStamp (DOMHighRes)	Runs natively on desktop, laptop & mobile browsers
Safety Headroom & Efficiency Factor	`80 PLUS / PFC 0.8–0.9 / 25% Surge Margin`	Continuous Load ≤ 75% Rated Peak Capacity	Prevents thermal throttling & voltage droop

Step-by-Step Workflow

4 Easy Steps

01Phase 1

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.

02Phase 2

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).

03Phase 3

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.

04Phase 4

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.

Real-World Applications

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.

How is a 48-bit MAC address structured?+

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.

Related Editorial GuideWhat is a MAC Address & How to Find or Spoof It Safely

Read Tutorial →

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

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

Step-by-Step Workflow

Enter Any Full MAC Address or 6-Hex OUI Prefix

Inspect the Vendor Match & First-Octet Binary Bits

Copy Normalized Formats & IPv6 EUI-64 Address

Generate a New MAC & Copy OS Spoofing Commands

Real-World Applications

Rogue Device & IoT Identification on Local LANs

Public Wi-Fi Privacy & Captive Portal Testing

Network Engineering Format Normalization

Architectural Capabilities

IEEE 24-Bit OUI Manufacturer & VM Detector

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

4-Format MAC Converter & SLAAC EUI-64 Calculator

Realistic MAC Generator & Cross-OS Spoofing CLI

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

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