ALGORITHMICS LTD. MAC Prefix 00:40:BC: Registry Assignment
Summary
- // what this is
- Algorithmics is registered to MAC prefix
00:40:BCin the IEEE OUI database. When a device's MAC address begins with00:40:BC, that block was registered by Algorithmics — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- Exact prefix matches fix the first-octet Group and Local bits at zero. Changing either bit produces a different prefix. The 24-bit suffix has 16,777,216 possible values, not an asserted number of devices or shipments. A match identifies the registry assignment only.
About this vendor.
A MAC address beginning 00:40:BC matches the IEEE MA-L assignment to ALGORITHMICS LTD. The registry record identifies the assignee, but does not establish a device category, product, current vendor identity, or safety status.
This prefix is 24 bits long, leaving 24 bits for suffix values. There are 16,777,216 possible suffix values; that is an address-space count, not a count of devices or shipments. In 00, the Group bit (bit value 01) and Local bit (02) are both zero. Those bits are fixed for an exact literal prefix match; changing either bit changes the prefix.
RFC 7042 identifies the Group bit as 01 and the Local bit as 02 in the initial octet of an EUI-48 [Confirmed] — https://www.rfc-editor.org/rfc/rfc7042.txt
For identification, compare the first three octets exactly. A match supports identifying the registry assignment only; it cannot establish which device is present or who currently operates it.
- Prefix match
00:40:BCis listed as a 24-bit MA-L assignment to ALGORITHMICS LTD.; compare the first three octets [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv; https://www.rfc-editor.org/rfc/rfc7042.txt- Possible suffix values
- 16,777,216; this is an address-space count, not a device count [Confirmed] — https://www.rfc-editor.org/rfc/rfc7042.txt
- Group and Local bits
- Both are zero in the first octet
00[Confirmed] — https://www.rfc-editor.org/rfc/rfc7042.txt
- Company
- ALGORITHMICS LTD. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefix
00:40:BC[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Country
- GB [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Device types
- 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