70:B3:D5:56:B S.E.I. CO.,LTD.
Every MAC address from 70:B3:D5:56:B0:00 to 70:B3:D5:56:BF:FF belongs to a block the IEEE assigned to S.E.I. CO.,LTD.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 70:B3:D5:56:B belongs to
Written 70:B3:D5:56:B, 70-B3-D5-56-B or 70B3D556B, depending on the system. Look up a full address.
Prefix
70:B3:D5:56:B/36
Organization
S.E.I. CO.,LTD.
Registry
MA-S (36 bits)
Addresses
4,096
First address
70:B3:D5:56:B0:00
Last address
70:B3:D5:56:BF:FF
Address type
Globally unique, unicast
Registered address
59 Nirayama Tada Izunokuni Shizuoka JP 4102133
Parent block
Inside 70:B3:D5
This MA-S block is carved from the 24-bit block 70:B3:D5, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.
Same organization
Other blocks assigned to S.E.I. CO.,LTD.
3 more blocks registered under the same name.