macadress

Sichuan Tianyi Information Science & Technology Stock CO.,LTD

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:23:C9:00:00:00 /24
Vendor addressNo.1,Hot Spring Highway,Dayi County Chengdu Sichuan US 611330
Country🇺🇸  United States
RegisteredOct 8, 2008
Block range00:23:C9:00:00:00– 00:23:C9: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 →

Example addresses in this block

00:23:C9:00:00:00 00:23:C9:7F:FF:FF 00:23:C9:FF:FF:FF

Where this block sits

Previous 00:23:C8:00:00:00 /24 TEAM-R Next 00:23:CA:00:00:00 /24 Behind The Set, LLC

The nearest registered blocks of the same size on either side of this one in IEEE's address space.

Sichuan Tianyi Information Science & Technology Stock CO.,LTD holds 1 registered blocks in the IEEE registry, ranking #27,265 of 33,427 organizations by block count.