MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix90:4E:91:50:00:00 /28
Vendor addressVia Roma, 3 Sozzago Novara IT 28060
Country🇮🇹 Italy
RegisteredJun 4, 2017
Block range90:4E:91:50:00:00– 90:4E:91:5F: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 →
Ownership timeline
- Jun 4, 2017 – Oct 5, 2024 mcf88 SRL name changed
- Oct 5, 2024 – present ENGINKO SRL
Example addresses in this block
Where this block sits
Previous
90:4E:91:40:00:00 /28
Wrtnode technology Inc.
Next
90:4E:91:60:00:00 /28
Nuwa Robotics (HK) Limited Taiwan Branch
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
ENGINKO SRL holds 2 registered blocks in the IEEE registry, ranking #1,975 of 33,427 organizations by block count.
Other blocks registered to ENGINKO SRL