Siliconware Precision Industries Co., Ltd. MAC Prefixes: Device Unknown
Summary
- // what this is
- Siliconware Precision Industries is registered to MAC prefix
B0:38:29and 1 more in the IEEE OUI database. When a device's MAC address begins withB0:38:29, that block was registered by Siliconware Precision Industries — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- Both assigned prefixes are 24 bits, leaving 24 suffix bits (16,777,216 possible values per prefix). The first-byte Group and Local bits are zero for these exact prefixes. A matching captured address shows a prefix match only; it does not establish a device, operating system, deployment, traffic prevalence, or security state.
About this vendor.
A MAC address beginning with B0:38:29 or 18:16:E8 matches an IEEE MA-L assignment to Siliconware Precision Industries Co., Ltd. These prefixes identify registry assignments, not a device category or product. Industry, products, and website: Unknown.
Each assignment is 24 bits long, leaving 24 bits for the address suffix. An address matching either prefix has 16,777,216 possible suffix values. That is a mathematical range, not a count of devices, shipments, or observed traffic.
For both exact prefixes, the first-byte Group and Local bits are zero. A captured address matching the prefix therefore has those bits clear; changing either bit creates a different prefix. RFC 7042 explains that these bits have special significance in MAC identifiers and that assigned prefixes use the Local bit zero, while the Group bit is unspecified at assignment. A prefix match indicates a registry assignment, not a specific device, operating system, current vendor identity, or security state.
- Device category
- Unknown; no supplied source maps either prefix to a device type [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Company
- Siliconware Precision Industries Co., Ltd. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefixes
B0:38:29and18:16:E8[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Country
- Taiwan [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Device types
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Notable products
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Industry
- 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