MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixF4:20:55:50:00:00 /28
Vendor addressAvenida João XXIII - Bloco I Paraisópolis Minas Gerais BR 37660000
Country🇧🇷 Brazil
RegisteredJun 18, 2024
Block rangeF4:20:55:50:00:00– F4:20:55:5F:FF:FF
Address capacity1,048,576
AdministrationUniversally administered: its prefix comes from a block registered through the IEEE Registration Authority
TransmissionUnicast: addressed to a single device
SourceIEEE Registration Authority
Address capacity is the size of this registered block, not a count of devices actually manufactured or online. Registration identifies the organization holding the block, not a specific device model or unit.
Curious how a prefix like this turns into a full address? See how MAC addresses are structured →
Example addresses in this block
Where this block sits
Previous
F4:20:55:40:00:00 /28
Pulsotronic-Anlagentechnik GmbH
Next
F4:20:55:60:00:00 /28
Shenzhen GuangXu Electronic Technology Co.,Ltd.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Proqualit Telecom LTDA holds 2 registered blocks in the IEEE registry, ranking #2,776 of 33,427 organizations by block count.
Other blocks registered to Proqualit Telecom LTDA