74:E1:4A:9 Kanto Aircraft Instrument Co., Ltd.
Every MAC address from 74:E1:4A:90:00:00 to 74:E1:4A:9F:FF:FF belongs to a block the IEEE assigned to Kanto Aircraft Instrument Co., Ltd.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 74:E1:4A:9 belongs to
Written 74:E1:4A:9, 74-E1-4A-9 or 74E14A9, depending on the system. Look up a full address.
Prefix
74:E1:4A:9/28
Organization
Kanto Aircraft Instrument Co., Ltd.
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
74:E1:4A:90:00:00
Last address
74:E1:4A:9F:FF:FF
Address type
Globally unique, unicast
Registered address
2-3-18 Honfujisawa Fujisawa Kanagawa JP 251-0875
Parent block
Inside 74:E1:4A
This MA-M block is carved from the 24-bit block 74:E1:4A, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.