CID: a Company ID, not a MAC OUI. It identifies an organization for use in other IEEE 802 protocols, most commonly locally administered ELI-quadrant addresses, rather than being burned into hardware directly.
PrefixCA:7D:DD:00:00:00 /24
Vendor address39/1 Soi.Sangkhom Songkhro 12 Lat Phrao Bangkok TH 10230
Country🇹🇠Thailand
RegisteredJun 16, 2022
Block rangeCA:7D:DD:00:00:00– CA:7D:DD:FF:FF:FF
Address capacity16,777,216
AdministrationLocally administered: set by software, not burned into hardware
TransmissionUnicast: addressed to a single device
IEEE 802c quadrantELI: Extended Local Identifier
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
Where this block sits
EmOne (Thailand) Co.,Ltd. holds 1 registered blocks in the IEEE registry, ranking #11,706 of 33,421 organizations by block count.