MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
PrefixB4:39:D6:00:00:00 /24
Vendor address60 Alexandra Terrace 0000 SG 118502
Country🇸🇬 Singapore
RegisteredApr 9, 2010
Block rangeB4:39:D6:00:00:00– B4:39:D6: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
ProCurve Networking by HP holds 9 registered blocks in the IEEE registry, ranking #349 of 33,427 organizations by block count.
Other blocks registered to ProCurve Networking by HP