04:19:7F Grasphere Japan
Every MAC address from 04:19:7F:00:00:00 to 04:19:7F:FF:FF:FF belongs to a block the IEEE assigned to Grasphere Japan. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 04:19:7F belongs to
Written 04:19:7F, 04-19-7F or 04197F, depending on the system. Look up a full address.
Prefix
04:19:7F
Organization
Grasphere Japan
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
04:19:7F:00:00:00
Last address
04:19:7F:FF:FF:FF
Address type
Globally unique, unicast
Registered address
3-1-11 NNT build. Tokyo JP 1030013