What this means
The IEEE assigned the MA-M block A453EE4 to Williamson Corporation. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting A4:53:EE:4, it is Williamson Corporation hardware.
Frequently Asked Questions
Who owns MAC prefix A453EE4?
A453EE4 is registered to Williamson Corporation in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. Williamson Corporation's block covers 1,048,576 addresses.
What devices use A453EE4?
Any network device with a MAC address starting A4:53:EE:4 was manufactured by or for Williamson Corporation.