TELLABS OPERATIONS, INC. MAC Prefixes: Device Identity Unknown
Summary
- // what this is
- Tellabs Operations is registered to MAC prefix
00:A0:FFand 1 more in the IEEE OUI database. When a device's MAC address begins with00:A0:FF, that block was registered by Tellabs Operations — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- Each assigned prefix is 24 bits, leaving 24 suffix bits and 16,777,216 possible suffix values. In both first bytes, the Group and Local bits are zero. Changing either bit changes the exact prefix match; suffix possibilities are not device or shipment counts. A prefix match indicates an IEEE registry assignment, not a particular device, operating system, current legal identity, or security state.
About this vendor.
A MAC address beginning with 00:A0:FF or 00:B0:C7 matches an IEEE MA-L assignment to TELLABS OPERATIONS, INC.; the assignment alone does not identify a device type or product. Both prefixes are listed under the same legal company name, but the records do not establish a relationship to specific equipment or deployments.
Each entry is 24 bits long, leaving 24 bits for the suffix. That provides 16,777,216 possible suffix values per prefix, not a count of devices or shipments. For both exact prefixes, the first-byte Group bit and Local bit are zero. RFC 7042 explains that these bits have special significance: setting either changes the prefix match, and does not describe variation within the assigned prefix.
The supplied IEEE CSV records do not provide assignment dates. They show no MA-M or MA-S assignments for this company in the supplied extracts. A prefix match indicates a registry assignment; it does not establish the device, operating system, present company identity, traffic prevalence, or security state.
- Device type
- Unknown; no retrieved source maps either exact prefix to a device category [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Assignments
00:A0:FFand00:B0:C7(both MA-L) [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Company
- TELLABS OPERATIONS, INC. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Country
- US is indicated in the assignment records [Confirmed] — 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
- Organization status
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv