AEROFLEX LABORATORIES, INC. — MAC prefix identifies an IEEE registry assignment; device unknown
Summary
- // what this is
- Aeroflex Laboratories is registered to MAC prefix
00:50:31in the IEEE OUI database. When a device's MAC address begins with00:50:31, that block was registered by Aeroflex Laboratories — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- A matching address identifies the registry assignment only. The 24-bit prefix leaves 24 suffix bits (16,777,216 possible values), not a device or shipment count. For this exact prefix, the first-octet Group and Local bits are both zero; changing either bit creates a different prefix.
About this vendor.
A MAC address beginning 00:50:31 identifies an IEEE MA-L assignment registered to AEROFLEX LABORATORIES, INC.; the record does not identify a device or product. The assignment is a registry fact, not evidence of which equipment uses it, how common it is, or whether an address is safe. [IEEE OUI registry](https://standards-oui.ieee.org/oui/oui.csv)
This is a 24-bit prefix, leaving 24 bits for possible suffix values: 16,777,216 combinations. That number describes the address space, not a count of devices or shipments. Under RFC 7042, the first octet's Group bit is bit 0 and its Local bit is bit 1. For 00:50:31, both are zero; those values are fixed for this exact prefix. Changing either bit produces a different prefix. [RFC 7042](https://www.rfc-editor.org/rfc/rfc7042.txt)
The registry record indicates the country as the United States. It provides no assignment date, device category, or product mapping. A captured address matching this prefix supports identification of the registry assignment only; it cannot establish a particular device, operating system, current legal identity, or security state.
- Registry name
- AEROFLEX LABORATORIES, INC. — MA-L assignment.
- Matching prefix
00:50:31(24 bits).- Device or product
- Unknown; no exact-prefix device or product mapping is supplied.
- Company
- AEROFLEX LABORATORIES, INC. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefix
00:50:31[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Country
- United States [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Device or product mapping
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Assignment date
- Assignment dates are unavailable in these IEEE CSV records. [Unknown] — https://standards-oui.ieee.org/oui/oui.csv