MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:1A:7F:00:00:00 /24
Vendor addressNo.381, Xingangzhong Road, guangzhou guangdong CN 510310
Country🇨🇳 China
RegisteredNov 29, 2006
Block range00:1A:7F:00:00:00– 00:1A:7F: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 29, 2006 – Nov 7, 2015 GCI Science&Technology Co.,Ltd. name changedaddress changed
- Nov 7, 2015 – present GCI Science & Technology Co.,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.
GCI Science & Technology Co.,LTD holds 2 registered blocks in the IEEE registry, ranking #2,074 of 33,427 organizations by block count.
Other blocks registered to GCI Science & Technology Co.,LTD