MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:80:E9:00:00:00 /24
Vendor addressMadge House Maindenhead Berkshire GB SL6 2HP
Country🇬🇧 United Kingdom
RegisteredSep 8, 2000
Block range00:80:E9:00:00:00– 00:80:E9: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
- Sep 8, 2000 – Feb 12, 2004 MADGE NETWORKS name changedaddress changedcountry changed
- Feb 12, 2004 – present Madge Ltd.
Example addresses in this block
Where this block sits
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00:80:E8:00:00:00 /24
CUMULUS CORPORATIION
Next
00:80:EA:00:00:00 /24
ADVA Optical Networking Ltd.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Madge Ltd. holds 4 registered blocks in the IEEE registry, ranking #771 of 33,421 organizations by block count.
Other blocks registered to Madge Ltd.