2000+
Tools
50K+
Active Users
1M+
Files Processed
99.9%
Uptime
Identify the manufacturer and vendor of any network device by its MAC address. Instantly resolve the OUI prefix to find hardware brand, company name, and country of origin — a free MAC address lookup tool for network administrators, security audits, and device identification.
The MAC Address Lookup Tool allows you to identify themanufacturer of a network device using its MAC address. By entering a MAC address, the tool extracts theOrganizationally Unique Identifier (OUI) and matches it with vendor databases to determine the device manufacturer.
A MAC address (Media Access Control address) is a unique identifier assigned to network interfaces such asrouters, laptops, smartphones, switches, IoT devices, and network adapters. This identifier ensures that devices communicate correctly within a local network.
Network administrators, cybersecurity analysts, and developers often perform MAC address lookups to identify hardware vendors, audit network devices, and investigate unknown devices connected to a network.
A MAC address is a 48-bit hardware identifier assigned to a network interface card (NIC). It is typically represented as six pairs of hexadecimal numbers separated by colons or hyphens.
For example:
00:1A:2B:3C:4D:5E
The MAC address is divided into two main parts:
MAC addresses operate at Layer 2 of the OSI model and are used by network protocols to identify devices within local area networks (LANs).
| Section | Length | Description |
|---|---|---|
| OUI (Vendor Prefix) | First 24 bits | Identifies the manufacturer of the device |
| Device Identifier | Last 24 bits | Unique identifier assigned by the manufacturer |
The MAC address lookup tool analyzes the first portion of a MAC address to determine the hardware vendor that produced the device. This portion is known as the OUI prefix.
The lookup process works as follows:
Because the OUI database is publicly maintained by theIEEE Registration Authority, MAC address lookups can accurately identify thousands of hardware manufacturers.
MAC address lookup tools are commonly used innetwork management, cybersecurity, and device auditing. They help administrators understand which hardware vendors are present in a network environment.
For example, if an unknown MAC address appears in a router’s DHCP logs, a quick lookup can reveal whether the device belongs to a smartphone manufacturer, networking vendor, or IoT device maker.
| Tool | Purpose | Typical Usage |
|---|---|---|
| MAC Address Lookup | Identify hardware manufacturer | Find vendor from MAC address |
| DNS Lookup | Resolve domain names to IP addresses | Verify domain DNS configuration |
| IP Lookup | Identify geographic location of an IP | Analyze server or client IP origin |
| Port Scanner | Check open ports on a device | Detect running services on servers |
Online MAC address lookup tools provide a quick way to identify network hardware vendors without needing specialized networking software. They are useful for developers, IT professionals, and security analysts working with network infrastructure.
Advantages of using a browser-based MAC lookup tool include:
Whether you are managing a corporate network, investigating unknown devices, or analyzing IoT hardware, a MAC address lookup tool helps you quickly determine the origin and vendor of network devices.
A MAC (Media Access Control) address is a unique hardware identifier assigned to a network interface card (NIC). It allows devices to communicate with each other on a local network.
A MAC address lookup is a tool that identifies the manufacturer or vendor of a network device by analyzing the MAC address prefix assigned by IEEE.
A MAC address consists of 12 hexadecimal characters usually separated by colons or hyphens, for example 00:1A:2B:3C:4D:5E.
OUI stands for Organizationally Unique Identifier. It represents the first 24 bits of a MAC address and identifies the device manufacturer.
OUI prefixes are assigned by the IEEE (Institute of Electrical and Electronics Engineers) to hardware manufacturers.
Yes. The first 24 bits of a MAC address correspond to a manufacturer registered in the IEEE OUI database.
A MAC lookup can reveal the vendor name, manufacturer company, OUI prefix, and sometimes device type associated with the MAC address.
Yes. MAC address lookup tools rely on official IEEE OUI databases that map manufacturers to assigned MAC prefixes.
A MAC address identifies hardware on a local network, while an IP address identifies devices across the internet.
Under normal circumstances MAC addresses are unique, but they can be duplicated if a user manually changes or spoofs a MAC address.
MAC spoofing is the process of changing a device’s MAC address to impersonate another device on the network.
Administrators use MAC addresses to monitor network devices, enforce security policies, troubleshoot connectivity issues, and control device access.
No. MAC addresses only identify device manufacturers and do not reveal personal user data.
MAC addresses can be found in network settings or using commands like ipconfig /all on Windows or ifconfig on Linux and macOS.
A locally administered MAC address is manually assigned by a system administrator instead of being factory-assigned by the manufacturer.
A universally administered MAC address is assigned by the manufacturer and globally unique based on the IEEE OUI registry.
A 48-bit MAC address allows for over 281 trillion possible unique addresses.
EUI-48 is the standard 48-bit MAC address format used in Ethernet, while EUI-64 is a 64-bit format used in IPv6 addressing.
Yes. All network devices including routers, switches, and wireless access points have MAC addresses assigned to their interfaces.
The factory MAC address does not change, but users can temporarily modify it using MAC spoofing techniques.
Many modern devices randomize MAC addresses to protect user privacy when scanning or connecting to wireless networks.
MAC address filtering is a network security feature that allows or blocks devices from connecting based on their MAC addresses.
MAC lookup usually identifies the manufacturer but not the exact device model.
Yes. Security analysts use MAC address lookup to identify unknown devices on networks and investigate suspicious connections.
MAC lookup tools use IEEE OUI registries and manufacturer databases to match MAC address prefixes with vendors.
Yes. MAC lookup only analyzes public manufacturer data and does not access private device information.
The broadcast MAC address FF:FF:FF:FF:FF:FF is used to send data to all devices on a local network.
Multicast MAC addresses allow data to be delivered to multiple devices simultaneously within a network.