Affinegy MAC Prefix 58:1C:BD: IEEE assignment; device identity Unknown
Summary
- // what this is
- Affinegy is registered to MAC prefix
58:1C:BDin the IEEE OUI database. When a device's MAC address begins with58:1C:BD, that block was registered by Affinegy — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- A MAC beginning 58:1C:BD matches the MA-L registry assignment to Affinegy; the supplied evidence does not map it to a device or product. The first octet is 58 hex: Group bit 0 and Local bit 0 are fixed for this exact prefix. It has 24 suffix bits and 16,777,216 possible suffix values, not an observed device or shipment count. Changing either fixed bit changes the prefix.
About this vendor.
A MAC address beginning 58:1C:BD matches an IEEE MA-L assignment registered to Affinegy; the supplied evidence does not identify a device category or product using it. A prefix match identifies the registry assignment, not the device, its operator, or its current vendor identity.
This 24-bit prefix leaves 24 bits for suffix values, allowing 16,777,216 possible values. That is a mathematical address-space count, not a count of devices, shipments, or observed addresses. RFC 7042 explains that MAC identifiers use an assigned prefix followed by additional bits.
For this exact prefix, the first octet 58 has Group bit 0 and Local bit 0. Those bits are fixed for a literal match to 58:1C:BD; changing either bit produces a different prefix. Assignment dates are unavailable in these IEEE CSV records.
- Company
- Affinegy [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry assignment
58:1C:BD(MA-L) [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Device category
- Unknown [Unknown]
- Country
- United States [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Assignment date
- Assignment dates are unavailable in these IEEE CSV records. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- MAC interpretation
- 48-bit identifier with an assigned initial prefix and subsequent bits [Confirmed] — https://www.rfc-editor.org/rfc/rfc7042.txt