Christ Electronic System GmbH - MAC Prefix 189BA5C (MA-M)

What this means

The IEEE assigned the MA-M block 189BA5C to Christ Electronic System GmbH. 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 18:9B:A5:C, it is Christ Electronic System GmbH hardware.

Frequently Asked Questions

Who owns MAC prefix 189BA5C?

189BA5C is registered to Christ Electronic System GmbH 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. Christ Electronic System GmbH's block covers 1,048,576 addresses.

What devices use 189BA5C?

Any network device with a MAC address starting 18:9B:A5:C was manufactured by or for Christ Electronic System GmbH.

OUI prefix	189BA5C
Vendor	Christ Electronic System GmbH
Registry	MA-M (28-bit, medium block)
Block size	1,048,576 addresses
Country	DE
Other blocks by this vendor	1 total
Example MAC	18:9B:A5:C:00:00:00