ALFATECH, INC. — MAC prefix identifies a registry assignment; device type Unknown
Summary
- // what this is
- Alfatech is registered to MAC prefix
00:E0:3Ein the IEEE OUI database. When a device's MAC address begins with00:E0:3E, that block was registered by Alfatech — 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 00:E0:3E matches an IEEE MA-L assignment registered to ALFATECH, INC. The record identifies the registrant and prefix; it does not identify a device category, product, or current vendor identity. Device type is Unknown from the supplied evidence.
This is a 24-bit prefix match: the first three octets must be 00:E0:3E, leaving 24 bits, or 16,777,216 possible suffix values. That is a mathematical address-space count, not a device or shipment count. For this exact prefix, the first octet is 00, so its Group bit and Local bit are both zero. Changing either bit produces a different prefix and no longer matches this assignment. RFC 7042 explains the MAC identifier structure and these bit meanings.
The IEEE CSV record gives Japan (JP) as the country indication. The supplied MA-M and MA-S CSV excerpts contain no assignments for this registrant. Assignment dates are unavailable in these IEEE CSV records.
- Company
- ALFATECH, INC. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefix
00:E0:3E[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Country
- Japan [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Device type
- 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