Rosenberger Hochfrequenztechnik GmbH & Co. KG
CID
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.
Prefix7A:FD:44:00:00:00 /24
Vendor addressHauptstrasse 1 Fridolfing DE 83413
Country🇩🇪 Germany
Block range7A:FD:44:00:00:00– 7A:FD:44: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