70:B3:D5:48:F Seiwa Giken
Every MAC address from 70:B3:D5:48:F0:00 to 70:B3:D5:48:FF:FF belongs to a block the IEEE assigned to Seiwa Giken. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 70:B3:D5:48:F belongs to
Written 70:B3:D5:48:F, 70-B3-D5-48-F or 70B3D548F, depending on the system. Look up a full address.
Prefix
70:B3:D5:48:F/36
Organization
Seiwa Giken
Registry
MA-S (36 bits)
Addresses
4,096
First address
70:B3:D5:48:F0:00
Last address
70:B3:D5:48:FF:FF
Address type
Globally unique, unicast
Registered address
4-4-23 Hotarugaike-higashimachi Toyonaka-City Osaka JP 560-0032
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.