The leftmost 6 digits (24 bits) called a "prefix" is associated with the adapter manufacturer (M).Each vendor registers and obtains MAC prefixes as assigned by the IEEE.
Among all devices manufactured with the same vendor prefix, each is given their own unique 24-bit number.
Vendors often possess many prefix numbers associated with their different products.
For example, the prefixes , :9C and 68:7F:74 (plus many others) all belong to Linksys (Cisco Systems).
Some Internet Service Providers link each of their residential customer accounts to the MAC addresses of the home network router (or another gateway device).
The address seen by the provider doesn't change until the customer replaces their gateway, such as by installing a new router.
Comments Mac Address Assignments
List of MAC addresses with vendors identities GitHub
A2 Wellfleet 0000AA4 Acorn 0000AA6 Network General internal assignment, not for products 0000AA8 Stratus.…
MAC address - Wikipedia
A media access control address MAC address of a device is a unique identifier assigned to a. The IEEE manages allocation of MAC addresses, originally known as MAC-48 and which it now refers to as EUI-48 identifiers. The IEEE has a.…
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The Wireshark OUI lookup tool provides an easy way to look up OUIs and other MAC address prefixes. It uses the Wireshark manufacturer database, which is a.…
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Enter the MAC address or OUI and find which company made the device.…
How are MAC addresses assigned? - Quora
For convenience, most computers list MAC addresses as 12-digit hexadecimal. The current list of vendors and their OUI assignments are…
Home MAC Vendor Lookup Tool & API
Find the vendor / manufacturer of a device by its MAC Address with our lookup tool or automate it with our API!…
Ethernet Numbers - Internet Assigned Numbers Authority
This page has assignments by IANA as specified in RFC7042 to be under. As described in RFC7042, 48-bit MAC addresses in the range.…
Welcome to The Public Listing For IEEE Standards Registration.
Authority assigns unambiguous names to objects in a way which makes the assignment available to interested parties. MAC Address Block Medium MA-M.…