ALCATEL DATA NETWORKS — one MA-L assignment, device identity unknown
Summary
- // what this is
- Alcatel DATA Networks is registered to MAC prefix
00:A0:81in the IEEE OUI database. When a device's MAC address begins with00:A0:81, that block was registered by Alcatel DATA Networks — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- The exact 24-bit prefix fixes the first octet's Group and Local bits at 0; changing either bit changes the prefix. A matching address alone does not establish a device, deployment, traffic prevalence, or safety.
About this vendor.
A MAC address beginning 00:A0:81 matches an IEEE MA-L assignment to ALCATEL DATA NETWORKS; the record does not identify a device type or specific product. The assignment is a registry association, not evidence of who deployed a captured address or when it was used.
This is one 24-bit prefix, leaving 24 bits for suffix values: 16,777,216 possible values. That number describes the address space, not the number of devices or shipments. The matching boundary is the first three octets: a full address matches this assignment when those octets are 00:A0:81.
The prefix’s first byte is 00, so its Group bit and Local bit are both 0, as shown in the supplied address interpretation. RFC 7042 identifies the Group and Local bits as having special significance in the initial octet of an EUI-48, and gives their respective bit masks as 01 and 02. Both bits are fixed for this prefix; changing either produces a different prefix. The supplied evidence does not establish company products, industry, or device categories.
- MAC prefix
00:A0:81(24 bits) [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Device identity
- Unknown; no device category is established for this prefix [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Company
- ALCATEL DATA NETWORKS [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefix
00:A0:81[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Country
- US [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Device types
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv