MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:A0:78:00:00:00 /24
Vendor address1000 Fore Drive Warrendale PA US 15086-7502
Country🇺🇸 United States
RegisteredApr 22, 1998
Block range00:A0:78:00:00:00– 00:A0:78: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 →
Ownership timeline
- Apr 22, 1998 – Jun 4, 2001 CELLACCESS TECHNOLOGY, INC. name changedaddress changed
- Jun 4, 2001 – present Marconi Communications
Example addresses in this block
Where this block sits
Previous
00:A0:77:00:00:00 /24
FUJITSU NEXION, INC.
Next
00:A0:79:00:00:00 /24
ALPS ELECTRIC (USA), INC.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Marconi Communications holds 3 registered blocks in the IEEE registry, ranking #1,165 of 33,421 organizations by block count.
Other blocks registered to Marconi Communications