Xyplex, Inc. MAC prefixes: device identity Unknown
Summary
- // what this is
- Xyplex is registered to MAC prefix
00:A0:9Cand 1 more in the IEEE OUI database. When a device's MAC address begins with00:A0:9C, that block was registered by Xyplex — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- Each exact 24-bit prefix fixes first-byte Group and Local bits at 0. Each leaves 24 suffix bits, or 16,777,216 possible suffix values, which is not a device or shipment count. Prefix matching identifies an IEEE registry assignment, not a particular device, deployment, current operator, or security state.
About this vendor.
A MAC address beginning with 00:A0:9C or 08:00:87 matches an IEEE MA-L assignment to Xyplex, Inc.; the supplied evidence does not identify a device category or product for either prefix. A match establishes the registry assignment, not which device made a capture, who currently operates it, or whether it is safe.
Both assignments are 24-bit prefixes, leaving 24 bits for possible suffix values per prefix. For each exact prefix, the supplied hexadecimal arithmetic gives Group bit 0 and Local bit 0 in the first byte. Those bits are fixed for a literal match; flipping either bit changes the prefix being matched. The 16,777,216 possible suffix values describe address space, not an observed device or shipment count.
RFC 7042 explains that 48-bit MAC identifiers can use an initial 3-octet OUI followed by 3 additional octets, and describes the Group and Local bits. The supplied IEEE CSV records contain two assignments for the exact legal name Xyplex, Inc. and display no assignment dates. They do not establish current vendor identity or deployment.
- Vendor match
- Xyplex, Inc. is the IEEE registrant for
00:A0:9Cand08:00:87. - Device identity
- Unknown; no device category is mapped to these exact prefixes.
- Registry
- MA-L; two 24-bit prefix assignments.
- Address bits
- Group
0and Local0for each exact prefix; changing either bit changes the matched prefix. - Country
- United States, indicated by
USin both supplied IEEE assignment records.
- Company
- Xyplex, Inc. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefixes
00:A0:9C,08:00:87[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Country
- United States [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Device category
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Assignment dates
- Assignment dates are unavailable in these IEEE CSV records. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv