A.T.N.R. MAC prefix: device identification unknown
Summary
- // what this is
- A.T.N.R is registered to MAC prefix
00:E0:79in the IEEE OUI database. When a device's MAC address begins with00:E0:79, that block was registered by A.T.N.R — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- A prefix match indicates the IEEE registry assignment only; it does not establish a particular device, product, current operator, deployment, prevalence, or security status. The 24 suffix bits represent possible address values, not observed devices or shipments.
About this vendor.
A MAC address beginning 00:E0:79 matches an IEEE MA-L assignment registered to A.T.N.R. The available evidence does not identify a device type or establish that a particular vendor product uses this prefix, so the device or product is unknown. A matching prefix identifies the registry assignment; it does not establish a device’s model, operating system, current operator, or security status.
This is a 24-bit prefix, leaving 24 bits for suffix values: 16,777,216 possible values. That is a mathematical address-space count, not a count of devices, shipments, or addresses actually in use. RFC 7042 describes the Group and Local bits in the first octet; for this exact prefix both are zero. Changing either bit produces a different prefix, rather than a variation within the fixed 00:E0:79 assignment.
For identification, compare the first three octets of the captured MAC address with 00:E0:79. A match supports attribution to the recorded A.T.N.R. assignment, while the remaining three octets distinguish suffix values within that prefix. The IEEE CSV record provides no assignment date, and the supplied evidence does not establish company products, industry, website, or device categories.
- Device or product
- Unknown; no device category or product is mapped to this prefix by the available evidence.
- Matching prefix
00:E0:79(24 bits); compare the first three octets.- Address-space size
- 24 suffix bits allow 16,777,216 possible values; this is not an observed device or shipment count.
- First-octet bits
- Group bit 0 and Local bit 0 for this exact prefix; changing either creates a different prefix.
- Assignment date
- Unavailable in the displayed IEEE CSV record.
- Company
- A.T.N.R. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefix
00:E0:79[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Device type
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Assignment date
- Assignment dates are unavailable in these IEEE CSV records. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- MAC prefix and Group/Local bit interpretation
- [Confirmed] — https://www.rfc-editor.org/rfc/rfc7042.txt