90:F4:21:A Proqualit Telecom LTDA
Every MAC address from 90:F4:21:A0:00:00 to 90:F4:21:AF:FF:FF belongs to a block the IEEE assigned to Proqualit Telecom LTDA. Network cards, phones and other devices it makes carry addresses from here.
Assignment
Who 90:F4:21:A belongs to
Written 90:F4:21:A, 90-F4-21-A or 90F421A, depending on the system. Look up a full address.
Prefix
90:F4:21:A/28
Organization
Proqualit Telecom LTDA
Registry
MA-M (28 bits)
Addresses
1,048,576
First address
90:F4:21:A0:00:00
Last address
90:F4:21:AF:FF:FF
Address type
Globally unique, unicast
Registered address
Avenida João XXIII - Bloco I Paraisópolis Minas Gerais BR 37660000
Parent block
Inside 90:F4:21
This MA-M block is carved from the 24-bit block 90:F4:21, which the IEEE holds as IEEE Registration Authority and divides among smaller assignees.
Same organization
Other blocks assigned to Proqualit Telecom LTDA
1 more block registered under the same name.