MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:04:7E:00:00:00 /24
Vendor addressWerner von Siemensstraat 7 Zoetermeer Zoetermeer NL 2712PN
Country🇳🇱 Netherlands
RegisteredNov 23, 2000
Block range00:04:7E:00:00:00– 00:04:7E: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
- Nov 23, 2000 – Nov 4, 2005 NKF Electronics name changedaddress changed
- Nov 4, 2005 – May 26, 2011 Optelecom=NKF name changedaddress changed
- May 26, 2011 – Feb 13, 2025 Siqura B.V. name changedaddress changed
- Feb 13, 2025 – present TKH Security B.V.
Example addresses in this block
Where this block sits
Previous
00:04:7D:00:00:00 /24
Motorola Solutions Inc.
Next
00:04:7F:00:00:00 /24
Chr. Mayr GmbH & Co. KG
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
TKH Security B.V. holds 2 registered blocks in the IEEE registry, ranking #3,263 of 33,421 organizations by block count.
Other blocks registered to TKH Security B.V.