MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix38:73:EA:90:00:00 /28
Vendor address123 Langton St. San Francisco CA US 94103
Country🇺🇸 United States
RegisteredSep 11, 2017
Block range38:73:EA:90:00:00– 38:73:EA:9F: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
38:73:EA:80:00:00 /28
Rock Electronic Co., Ltd.
Next
38:73:EA:A0:00:00 /28
SHENZHEN CSE TECHNOLOGY CO., LTD
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Lightform, Inc. holds 1 registered blocks in the IEEE registry, ranking #18,487 of 33,427 organizations by block count.