International Computers, Ltd MAC Prefixes: Registry Assignment
Summary
- // what this is
- International Computers is registered to MAC prefix
08:00:0Dand 1 more in the IEEE OUI database. When a device's MAC address begins with08:00:0D, that block was registered by International Computers — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- Each prefix is 24 bits with a 24-bit suffix range of 16,777,216 possible values. The first-byte Group and Local bits are zero in both exact prefixes; either bit changing gives a different prefix. Suffix capacity is not an observed device or shipment count. A prefix match indicates an IEEE registry assignment only, not a particular device, product, current identity, deployment, prevalence, or security state.
About this vendor.
A MAC address beginning with 08:00:0D or 00:04:F0 matches an IEEE MA-L assignment to International Computers, Ltd; the supplied records do not identify a device category or product for either prefix.
Both are 24-bit prefixes, leaving 24 bits for the remainder of a 48-bit MAC identifier. RFC 7042 describes this general structure and the Group and Local bits in the first octet. For these exact prefixes, both bits are zero: 08 in 08:00:0D and 00 in 00:04:F0. The bits are fixed by each literal prefix match. Changing either bit produces a different prefix, rather than a variation within the same match.
Each prefix permits 16,777,216 possible suffix values. That is an arithmetic range, not a count of devices, shipments, or observed addresses. A matching prefix supports identifying the recorded registry assignment; by itself, it does not establish deployment, traffic prevalence, a specific product, current corporate identity, or security status.
- Assigned prefixes
08:00:0Dand00:04:F0[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Device category
- Unknown — https://standards-oui.ieee.org/oui/oui.csv