B4:B1:5A Siemens AG Energy Management Division
Every MAC address from B4:B1:5A:00:00:00 to B4:B1:5A:FF:FF:FF belongs to a block the IEEE assigned to Siemens AG Energy Management Division. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who B4:B1:5A belongs to
Written B4:B1:5A, B4-B1-5A or B4B15A, depending on the system. Look up a full address.
Prefix
B4:B1:5A
Organization
Siemens AG Energy Management Division
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
B4:B1:5A:00:00:00
Last address
B4:B1:5A:FF:FF:FF
Address type
Globally unique, unicast
Registered address
Humboldtstr. 59 Nurnberg Bavaria DE 90459