A4:59:D3:4 GRE SYSTEM INC.
Every MAC address from A4:59:D3:40:00:00 to A4:59:D3:4F:FF:FF belongs to a block the IEEE assigned to GRE SYSTEM INC.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who A4:59:D3:4 belongs to
Written A4:59:D3:4, A4-59-D3-4 or A459D34, depending on the system. Look up a full address.
Prefix
A4:59:D3:4/28
Organization
GRE SYSTEM INC.
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
A4:59:D3:40:00:00
Last address
A4:59:D3:4F:FF:FF
Address type
Globally unique, unicast
Registered address
A-311, Higgsutower, 184, Jungbu-daero, Giheung-gu Yongin-si Gyeonggi-do KR 17095
Parent block
Inside A4:59:D3
This MA-M block is carved from the 24-bit block A4:59:D3, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.
Same organization
Other blocks assigned to GRE SYSTEM INC.
1 more block registered under the same name.