Utility, Inc MAC prefixes: device identity Unknown
Summary
- // what this is
- Utility is registered to MAC prefix
00:16:EDand 1 more in the IEEE OUI database. When a device's MAC address begins with00:16:ED, that block was registered by Utility — the OUI identifies the maker of the network hardware, which is not always the brand on the device.
About this vendor.
A MAC address beginning with 00:16:ED or 00:09:BC matches an IEEE MA-L assignment to Utility, Inc; the assignment alone does not identify a device or product. The available evidence does not establish what devices, if any, use these prefixes in deployment.
Both entries are 24-bit prefixes, leaving 24 address bits after the match. RFC 7042 describes the first-octet Group bit (01) and Local bit (02): for both literal prefixes, 00 fixes each bit to zero. A changed value in either bit would be a different prefix, not a variation within this exact assignment.
Each prefix has 16,777,216 possible suffix values. That is a mathematical address-space count, not a count of devices, shipments, or observed traffic. A captured matching address supports only a match to the listed registry assignment; it does not establish a specific product, operating system, current vendor identity, or security state.
- Registry match
- Utility, Inc — MA-L assignments
00:16:EDand00:09:BC[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv - Device or product identity
- Unknown; the supplied records do not map either prefix to a device or product [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Matching boundary
- Each prefix fixes the first 24 bits; compare the first three octets [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Group and Local bits
- Both are zero in each literal prefix's first octet (
00); changing either bit changes the prefix [Confirmed] — https://www.rfc-editor.org/rfc/rfc7042.txt