Abbey Systems Ltd MAC Prefix Identification: Vendor Known, Device Unknown
Summary
- // what this is
- Abbey Systems is registered to MAC prefix
00:12:E9in the IEEE OUI database. When a device's MAC address begins with00:12:E9, that block was registered by Abbey Systems — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- A match identifies the IEEE MA-L assignment prefix only. The 24-bit suffix has 16,777,216 possible values; this is not a device or shipment count. For this exact prefix, the first-byte Group and Local bits are 0; toggling either changes the prefix.
About this vendor.
A MAC address beginning 00:12:E9 matches an IEEE MA-L assignment to Abbey Systems Ltd; the supplied records do not identify a device category or product using it. A match establishes the registry prefix only, not which device made the address or whether it is currently deployed by the named registrant.
This assignment is 24 bits long, leaving 24 bits for suffix values. There are 16,777,216 possible suffix values, but that number does not indicate how many devices exist or were shipped. The prefix alone also cannot establish traffic prevalence or safety.
For this exact prefix, the first-byte Group and Local bits are both zero. The prefix therefore has the values shown in the supplied interpretation; changing either bit produces a different prefix rather than a variant within this fixed assignment. For identification, compare the captured address’s first 24 bits with 00:12:E9 and retain the full address for further investigation.
- Prefix
00:12:E9(24 bits) [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Possible suffix values
- 16,777,216; not a device or shipment count [Confirmed] — https://www.rfc-editor.org/rfc/rfc7042.txt
- Company
- Abbey Systems Ltd [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefixes
00:12:E9[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Total prefix count
- 1 [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Country
- New Zealand [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Device types
- 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
- Technical interpretation
- An EUI-48 is 48 bits;
00:12:E9matches its first 24 bits, leaving 24 suffix bits. The exact prefix has Group bit 0 and Local bit 0. [Confirmed] — https://www.rfc-editor.org/rfc/rfc7042.txt