Ruby Tech Corp. MAC prefixes: vendor identity unknown

A MAC address beginning with 00:24:30 or 00:40:C7 matches an IEEE MA-L assignment to Ruby Tech Corp. or RUBY TECH CORPORATION, respectively; the available evidence does not identify a device or vendor product for either prefix. The records establish assignment names only, so they do not establish that the two names refer to one corporate group or brand, or that either assignment is deployed in a particular device.

Both assignments are 24-bit prefixes, leaving 24 address bits after the matching boundary. Each therefore has 16,777,216 possible suffix values; that is an address-space count, not a count of devices or shipments. For these exact prefixes, the first-byte Group and Local bits are both zero. Setting either bit changes the prefix, so those altered addresses no longer match these literal assignments.

An address match can support a registry-assignment lookup, but cannot by itself establish a particular device, product, operating system, current legal identity, traffic prevalence, or security state. IEEE CSV records shown here do not include assignment dates.

Registry match

Ruby Tech Corp. (00:24:30) and RUBY TECH CORPORATION (00:40:C7); device identity is unknown.

Prefix length

Two MA-L 24-bit assignments; each leaves 24 bits for suffix values.

Address interpretation

Group bit 0 and Local bit 0 for both exact prefixes; changing either bit changes the prefix.

Deployment

An assignment match does not establish a particular device or deployment.

Company

Ruby Tech Corp.; RUBY TECH CORPORATION [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Prefixes

00:24:30 (MA-L); 00:40:C7 (MA-L) [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Device identity

Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv

Country

Taiwan [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Assignment date

Assignment dates are unavailable in these IEEE CSV records. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv