54:08:3B:7 ASCS Sp. z o.o.
Every MAC address from 54:08:3B:70:00:00 to 54:08:3B:7F:FF:FF belongs to a block the IEEE assigned to ASCS Sp. z o.o.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 54:08:3B:7 belongs to
Written 54:08:3B:7, 54-08-3B-7 or 54083B7, depending on the system. Look up a full address.
Prefix
54:08:3B:7/28
Organization
ASCS Sp. z o.o.
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
54:08:3B:70:00:00
Last address
54:08:3B:7F:FF:FF
Address type
Globally unique, unicast
Registered address
Zwirki i Wigury 65A Mikolow Slask PL 43-190 Mikolow
Parent block
Inside 54:08:3B
This MA-M block is carved from the 24-bit block 54:08:3B, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.