MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:C0:72:00:00:00 /24
Vendor addressHOLLINGWOOD HOUSE LS21 3HA UNITED GB KINGDOM
Country🇬🇧 United Kingdom
RegisteredApr 22, 1998
Block range00:C0:72:00:00:00– 00:C0:72: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:C0:71:00:00:00 /24
AREANEX COMMUNICATIONS, INC.
Next
00:C0:73:00:00:00 /24
XEDIA CORPORATION
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
KNX LTD. holds 1 registered blocks in the IEEE registry, ranking #17,776 of 33,427 organizations by block count.