A4:B1:21 Arantia 2010 S.L.
Every MAC address from A4:B1:21:00:00:00 to A4:B1:21:FF:FF:FF belongs to a block the IEEE assigned to Arantia 2010 S.L.. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who A4:B1:21 belongs to
Written A4:B1:21, A4-B1-21 or A4B121, depending on the system. Look up a full address.
Prefix
A4:B1:21
Organization
Arantia 2010 S.L.
Registry
MA-L (a 24-bit OUI)
Addresses
16,777,216
First address
A4:B1:21:00:00:00
Last address
A4:B1:21:FF:FF:FF
Address type
Globally unique, unicast
Registered address
Volta do Castro s/n Santiago de Compostela A Coruña ES 15706