MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
PrefixF4:15:63:00:00:00 /24
Vendor address1322 North Whitman Lane Liberty Lake WA US 99019
Country🇺🇸 United States
RegisteredJan 14, 2015
Block rangeF4:15:63:00:00:00– F4:15:63: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
- Jan 14, 2015 – Jun 4, 2025 F5 Networks, Inc. name changed
- Jun 4, 2025 – present F5 Inc.
Example addresses in this block
Where this block sits
F5 Inc. holds 7 registered blocks in the IEEE registry, ranking #420 of 33,427 organizations by block count.
Other blocks registered to F5 Inc.