Chelsea Technologies Group Ltd - MAC Prefix 70B3D5579 (MA-S)

What this means

The IEEE assigned the MA-S block 70B3D5579 to Chelsea Technologies Group Ltd. 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 70:B3:D5:57:9, it is Chelsea Technologies Group Ltd hardware.

Frequently Asked Questions

Who owns MAC prefix 70B3D5579?

70B3D5579 is registered to Chelsea Technologies Group Ltd in the IEEE MA-S registry.

What does the MA-S registry type mean?

An MA-S assignment, formerly called OUI-36, covers 36 bits, giving the vendor 4,096 device addresses, the smallest block the IEEE issues. Chelsea Technologies Group Ltd's block covers 4,096 addresses.

What devices use 70B3D5579?

Any network device with a MAC address starting 70:B3:D5:57:9 was manufactured by or for Chelsea Technologies Group Ltd.

OUI prefix	70B3D5579
Vendor	Chelsea Technologies Group Ltd
Registry	MA-S (36-bit, small block)
Block size	4,096 addresses
Other blocks by this vendor	1 total
Example MAC	70:B3:D5:57:9:00:00:00