MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:25:B6:00:00:00 /24
Vendor address895 Plymouth Road Slough Berkshire GB SL1 4LP
Country🇬🇧 United Kingdom
RegisteredMar 29, 2009
Block range00:25:B6:00:00:00– 00:25:B6: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
00:25:B5:00:00:00 /24
Cisco Systems, Inc
Next
00:25:B7:00:00:00 /24
Costar electronics, inc.,
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Telecom FM holds 2 registered blocks in the IEEE registry, ranking #3,229 of 33,427 organizations by block count.
Other blocks registered to Telecom FM