Sprocomm Technologies CO.,Ltd MAC prefix assignments
Summary
- // what this is
- Sprocomm Technologies is registered to MAC prefix
90:0B:C1and 2 more in the IEEE OUI database. When a device's MAC address begins with90:0B:C1, that block was registered by Sprocomm Technologies — the OUI identifies the maker of the network hardware, which is not always the brand on the device.
About this vendor.
A MAC address beginning with one of the listed prefixes is registered to Sprocomm Technologies CO.,Ltd; the assignment alone does not identify a particular device, product, or deployed network. The IEEE records list two MA-L assignments and one MA-M assignment under this legal name or a capitalization variant. They provide no product catalog or device category, so product and device identification remains unknown.
The prefixes 90:0B:C1 and 28:B4:FB each match the first 24 bits of a 48-bit MAC address, leaving 24 suffix bits (16,777,216 possible values per prefix). B0:B3:53:1/28 matches the first 28 bits, leaving 20 suffix bits (1,048,576 possible values). These are possible suffix values, not counts of devices or shipments.
For all three exact prefixes, the first-byte Group and Local bits are zero. Under RFC 7042, these bits indicate group addressing and local administration. Setting either bit changes the prefix and is not a variation within the exact assignment. A captured address matching a listed boundary supports a registry-prefix match only; it does not establish use, prevalence, ownership of a particular device, or security status.
- Registry records
- Two MA-L and one MA-M assignment are listed under this legal name or a capitalization variant [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv, https://standards-oui.ieee.org/oui28/mam.csv
- Country
- China appears in the MA-L assignment address records [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Device category
- Unknown; the supplied records do not map these prefixes to a device category [Unknown] — https://standards-oui.ieee.org/oui/oui.csv, https://standards-oui.ieee.org/oui28/mam.csv
- Identification limit
- A match identifies a registry prefix assignment, not a specific device or its deployment [Confirmed] — https://www.rfc-editor.org/rfc/rfc7042.txt
- Prefixes
90:0B:C1,28:B4:FB,B0:B3:53:1/28[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv, https://standards-oui.ieee.org/oui28/mam.csv- Registry
- MA-L / MA-M [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv, https://standards-oui.ieee.org/oui28/mam.csv
- Assignment count
- 3 [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv, https://standards-oui.ieee.org/oui28/mam.csv
- Country
- China [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