B4:37:D1:E Union Tecnologica Noxium S.L.
Every MAC address from B4:37:D1:E0:00:00 to B4:37:D1:EF:FF:FF belongs to a block the IEEE assigned to Union Tecnologica Noxium S.L.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who B4:37:D1:E belongs to
Written B4:37:D1:E, B4-37-D1-E or B437D1E, depending on the system. Look up a full address.
Prefix
B4:37:D1:E/28
Organization
Union Tecnologica Noxium S.L.
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
B4:37:D1:E0:00:00
Last address
B4:37:D1:EF:FF:FF
Address type
Globally unique, unicast
Registered address
Calle Averroes nº8, Edificio Acropolis Sevilla Sevilla ES 41020
Parent block
Inside B4:37:D1
This MA-M block is carved from the 24-bit block B4:37:D1, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.