10:63:A3:7 NRS Co., Ltd.
Every MAC address from 10:63:A3:70:00:00 to 10:63:A3:7F:FF:FF belongs to a block the IEEE assigned to NRS Co., Ltd.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 10:63:A3:7 belongs to
Written 10:63:A3:7, 10-63-A3-7 or 1063A37, depending on the system. Look up a full address.
Prefix
10:63:A3:7/28
Organization
NRS Co., Ltd.
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
10:63:A3:70:00:00
Last address
10:63:A3:7F:FF:FF
Address type
Globally unique, unicast
Registered address
Fujisirominami3-11-2 Toride Ibaraki JP 300-1516
Parent block
Inside 10:63:A3
This MA-M block is carved from the 24-bit block 10:63:A3, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.