UTC CCS MAC prefixes: vendor identification is limited to the registry record
Summary
- // what this is
- UTC CCS is registered to MAC prefix
00:08:F8and 1 more in the IEEE OUI database. When a device's MAC address begins with00:08:F8, that block was registered by UTC CCS — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- A match indicates the MA-L registry assignment only. Each prefix is 24 bits, with 24 suffix bits and 16,777,216 possible suffix values; this is not a device or shipment count. Both exact first octets are 00, so their Group and Local bits are 0. Changing either bit produces a different prefix.
About this vendor.
A MAC address beginning 00:08:F8 or 00:B0:19 matches an IEEE MA-L assignment recorded to UTC CCS. The supplied evidence does not identify a device category or show that either prefix is deployed in any particular product. A match establishes the registry assignment only; it does not establish a device, operating system, current company identity, or security status.
Both are 24-bit prefixes, leaving 24 bits after each prefix. Each therefore allows 16,777,216 possible suffix values. That is an address-space calculation, not a count of devices, shipments, or active addresses. The supplied assignment records identify two MA-L entries for UTC CCS; they do not show how those addresses are deployed.
For both literal prefixes, the first octet is 00: Group bit 0 and Local bit 0. These bits are fixed for an exact match. Turning either on changes the prefix and no longer matches these exact assignments. The supplied records include no assignment dates.
- Registry match
00:08:F8and00:B0:19are listed to UTC CCS as MA-L assignments. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Device category
- Unknown; no supplied source maps either exact prefix to a device category. [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Address interpretation
- Each prefix fixes 24 bits and leaves 24 suffix bits; Group and Local bits are both 0 in the first octet of each exact prefix. [Confirmed] — https://www.rfc-editor.org/rfc/rfc7042.txt
- Company
- UTC CCS [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefixes
00:08:F8,00:B0:19[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Device types
- 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