MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:1C:FC:00:00:00 /24
Vendor address1-1-3, Shimaya, Konohana-ku Osaka JP 554-0024
Country🇯🇵 Japan
RegisteredJun 16, 2007
Block range00:1C:FC:00:00:00– 00:1C:FC: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
- Jun 16, 2007 – Nov 13, 2015 Suminet Communication Technologies (Shanghai) Co., Ltd. name changed
- Nov 13, 2015 – May 29, 2020 Sumitomo Electric Industries,Ltd name changed
- May 29, 2020 – present Sumitomo Electric Industries, Ltd
Example addresses in this block
Where this block sits
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Sumitomo Electric Industries, Ltd holds 8 registered blocks in the IEEE registry, ranking #391 of 33,421 organizations by block count.
Other blocks registered to Sumitomo Electric Industries, Ltd