AES Corporation — MAC prefix assignment; device identity unknown
Summary
- // what this is
- AES is registered to MAC prefix
3C:C1:2Cin the IEEE OUI database. When a device's MAC address begins with3C:C1:2C, that block was registered by AES — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- For 48-bit MAC identifiers, the 24-bit prefix leaves 24 suffix bits, or 16,777,216 possible suffix values; this is not an observed device or shipment count. For the literal first octet 3C, Group=0 and Local=0. Either bit changing yields a different prefix. A match identifies the registry assignment, not a particular device or its security state. RFC 7042 discusses 48-bit and 64-bit MAC identifiers, prefix assignments, and the Group and Local bits.
About this vendor.
A MAC address beginning with 3C:C1:2C matches an IEEE MA-L assignment to AES Corporation; the assignment does not identify a device type or prove that AES Corporation made the device. The supplied evidence contains no first-party material establishing this legal entity’s products, industry, website, or current organizational status.
For 48-bit MAC identifiers, this 24-bit prefix leaves 24 bits for suffix values, allowing 16,777,216 possible suffixes. This is a mathematical address space, not a count of devices, shipments, or addresses observed in use. An exact prefix match establishes the registry assignment only; it does not establish traffic prevalence, deployment, or security status.
The first octet 3C has Group bit 0 and Local bit 0, as fixed by this literal prefix. A change to either bit produces a different prefix. RFC 7042 states that the Group bit has special significance in MAC addresses and that OUI and longer MAC prefixes are assigned with the Local bit zero and the Group bit unspecified; the supplied excerpt does not define the Local bit's meaning.
- Company
- AES Corporation [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefix
3C:C1:2C[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Country
- United States [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Device type
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Industry
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Notable products
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Website
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Organization status
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Related vendors
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Historic prefix
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv