XAVi Technologies Corp. MAC Prefixes: Device Unknown
Summary
- // what this is
- XAVi Technologies is registered to MAC prefix
00:01:38and 2 more in the IEEE OUI database. When a device's MAC address begins with00:01:38, that block was registered by XAVi Technologies — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- The exact listed prefixes have Group bit 0 and Local bit 0. Their matching boundaries are 24 bits for the two MA-L prefixes and 36 bits for the MA-S prefix; corresponding suffix spaces contain 16,777,216, 16,777,216, and 4,096 possible values, respectively. These are possible suffix values, not device counts. A prefix match establishes registry assignment only.
About this vendor.
A MAC address beginning with one of these listed prefixes identifies an IEEE registry assignment to XAVi Technologies Corp.; the specific device or product is unknown from the supplied evidence. The three assignments are 00:01:38, E0:91:53, and 70:B3:D5:C0:3/36.
The two MA-L entries each fix the first 24 bits, leaving 24 bits for suffix values; each therefore has 16,777,216 possible suffix values. The MA-S entry fixes 36 bits, leaving 12 bits and 4,096 possible suffix values. These are address-space possibilities, not counts of devices, shipments, or observed traffic.
For each exact prefix, the first-byte Group bit and Local bit are both 0. A matching address therefore shares those fixed bit values. RFC 7042 explains that these bits have special significance and that the Group bit distinguishes group from individual addresses. Changing either bit changes the prefix and is not variation within the listed assignment. A prefix match does not establish a particular device, deployment, or current vendor identity.
- Assignments
00:01:38(MA-L),E0:91:53(MA-L),70:B3:D5:C0:3/36(MA-S) [Confirmed]
- Company
- XAVi Technologies Corp. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L / MA-S [Confirmed] — MA-L: https://standards-oui.ieee.org/oui/oui.csv; MA-S: https://standards-oui.ieee.org/oui36/oui36.csv
- Prefixes
00:01:38,E0:91:53[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Prefix
70:B3:D5:C0:3/36[Confirmed] — https://standards-oui.ieee.org/oui36/oui36.csv- Device type
- Unknown [Unknown]
- Product catalog
- Unknown [Unknown]
- Industry
- Unknown [Unknown]
- Country
- Taiwan [Confirmed] — 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
- RFC 7042 describes the Group and Local bits in the first octet of MAC addresses. [Confirmed] — https://www.rfc-editor.org/rfc/rfc7042.txt