MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixF4:90:CB:A0:00:00 /28
Vendor address4600 Fairfax Dr Ste 410 Arlington VA US 22203-1553
Country🇺🇸 United States
RegisteredFeb 12, 2020
Block rangeF4:90:CB:A0:00:00– F4:90:CB:AF: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
- Feb 12, 2020 – Jun 1, 2022 Private name changedaddress changedcountry changed
- Jun 1, 2022 – present Fend Incorporated
Example addresses in this block
Where this block sits
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Fend Incorporated holds 1 registered blocks in the IEEE registry, ranking #12,600 of 33,427 organizations by block count.