MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:13:8B:00:00:00 /24
Vendor address7825 Fay Avenue, Suite 200 La Jolla CA US 92037
Country🇺🇸 United States
RegisteredFeb 6, 2005
Block range00:13:8B:00:00:00– 00:13:8B:FF:FF:FF
Address capacity16,777,216
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
00:13:8A:00:00:00 /24
Qingdao GoerTek Technology Co., Ltd.
Next
00:13:8C:00:00:00 /24
Kumyoung.Co.Ltd
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Phantom Technologies LLC holds 1 registered blocks in the IEEE registry, ranking #22,874 of 33,427 organizations by block count.