MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:0B:23:00:00:00 /24
Vendor address4849 Alpha Road Dallas US 74244
Country🇺🇸 United States
RegisteredSep 9, 2002
Block range00:0B:23:00:00:00– 00:0B:23: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 9, 2002 – Feb 6, 2005 Efficient Networks, Inc. name changed
- Feb 6, 2005 – Mar 27, 2018 Siemens Subscriber Networks name changedaddress changed
- Mar 27, 2018 – present Siemens Home & Office Comm. Devices
Example addresses in this block
Where this block sits
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00:0B:22:00:00:00 /24
Environmental Systems and Services
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00:0B:24:00:00:00 /24
AirLogic
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Siemens Home & Office Comm. Devices holds 3 registered blocks in the IEEE registry, ranking #1,312 of 33,421 organizations by block count.
Other blocks registered to Siemens Home & Office Comm. Devices