Tool Introduction
This tool is a convenient online Mac address vendor lookup tool. Users only need to enter a device's Mac address to quickly query the corresponding manufacturer information for that Mac address. The query results will display detailed information such as company name, country, province/state (including postal code), and specific street address. This provides great convenience for scenarios such as network device management, asset inventory, security auditing, troubleshooting, and identifying unknown network device sources, helping users quickly understand the physical ownership of a Mac address.
Mac Address Introduction
A Mac address (Media Access Control Address), also known as a physical address, hardware address, or Ethernet address, is a unique identifier assigned to a network interface controller (NIC) to uniquely identify a network device in a local area network (LAN) or wide area network (WAN). It typically consists of 48 binary bits, represented by 12 hexadecimal digits, for example, 00:1A:2B:3C:4D:5E. Mac addresses are globally unique, managed by the IEEE, and are permanently embedded in the network card hardware during device manufacturing, hence they are referred to as “burned-in addresses”.
OUI (Organizationally Unique Identifier)
The first 24 bits of a Mac address (i.e., the first 6 hexadecimal characters) are called the OUI (Organizationally Unique Identifier). This OUI is assigned by the IEEE to different hardware manufacturers or organizations, ensuring its global uniqueness. By querying the OUI part of a Mac address, we can precisely identify the manufacturer of that network device. This tool is based on this principle, parsing the input Mac address OUI and matching it against a vast database to provide detailed vendor information lookup services, helping users trace the origin of devices.
How to Use
- In the “Mac Address” input box on the page, enter the Mac address you need to query.
- Please ensure the entered Mac address format is correct. This tool supports various common formats, such as:
XX:XX:XX:XX:XX:XX (colon-separated), XX-XX-XX-XX-XX-XX (hyphen-separated), or XXXXXXXXXXXX (12 hexadecimal characters without separators). Input is case-insensitive.
- Click the “Query” button to submit the query request.
- The query results will be displayed in a list, including detailed information such as “Company Name”, “Country”, “Province/State (Postal Code)”, and “Street”.
Frequently Asked Questions
- Q: What Mac address input formats does this tool support?
- A: This tool supports various common Mac address formats, such as:
XX:XX:XX:XX:XX:XX (colon-separated), XX-XX-XX-XX-XX-XX (hyphen-separated), and XXXXXXXXXXXX (12 hexadecimal characters without separators). Input is case-insensitive.
- Q: What specific information will the query results provide?
- A: The query results will be presented in a clear list format, including detailed vendor geographical and ownership information such as “Company Name”, “Country”, “Province/State (Postal Code)”, and “Street”, helping you fully understand the manufacturer of the Mac address.
- Q: What if the entered Mac address cannot find vendor information?
- A: There could be several reasons: 1. The Mac address might be a private address (Local Administered Address, LAA) or a randomly generated address, not corresponding to any public vendor OUI. 2. The database might not yet contain the latest vendor information for that Mac address range. 3. Please carefully check if the entered Mac address is complete, correct, or if the format is incorrect.
- Q: How often is this tool's Mac address vendor database updated?
- A: This tool is committed to maintaining the latest Mac address vendor database. We update it regularly to include the latest OUI allocation information, but the global volume of Mac address allocations is vast and constantly changing, so 100% coverage of all the latest or extremely rare allocations cannot be guaranteed.
Notes
- Please ensure the entered Mac address is a valid 12-digit hexadecimal character combination, avoiding non-hexadecimal characters or insufficient/excessive length.
- The query results of this tool rely on the latest Mac address vendor database, but due to the dynamic nature of Mac address allocation and the existence of private addresses, matching results may not be found for very new, very old, or privately used Mac addresses.
- The query results are for reference only. Vendor information may change over time (e.g., company mergers, OUI reassignments, etc.), so it is recommended to supplement with other verification methods in critical applications.
