What this means
The IEEE assigned the MA-M block B44D431 to iLine Microsystems S.L. (B20956751). 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 B4:4D:43:1, it is iLine Microsystems S.L. (B20956751) hardware.
Frequently Asked Questions
Who owns MAC prefix B44D431?
B44D431 is registered to iLine Microsystems S.L. (B20956751) 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. iLine Microsystems S.L. (B20956751)'s block covers 1,048,576 addresses.
What devices use B44D431?
Any network device with a MAC address starting B4:4D:43:1 was manufactured by or for iLine Microsystems S.L. (B20956751).