Shenzhen Feasycom Co., Ltd: MAC Prefix Identification
Summary
- // what this is
- Shenzhen Feasycom is registered to MAC prefix
78:9F:38and 1 more in the IEEE OUI database. When a device's MAC address begins with78:9F:38, that block was registered by Shenzhen Feasycom — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- Each listed prefix is 24 bits, with 24 suffix bits and 16,777,216 possible suffix values. Both have Group bit 0 and Local bit 0 in the first byte. An exact literal prefix match fixes those bits; changing either bit gives a different prefix. Possible suffix values do not indicate device or shipment counts. A match identifies a registry assignment, not a specific device or product.
About this vendor.
A MAC address beginning 78:9F:38 or 20:98:8E matches an IEEE MA-L assignment to Shenzhen Feasycom Co., Ltd. The assignment identifies the registry name associated with the prefix; it does not identify a device category, prove that Feasycom made a particular device, or show where the address is deployed.
Each prefix is 24 bits long, leaving 24 bits for suffix values: 16,777,216 possible values per prefix. These are possible address values, not a count of devices or shipments. In both prefixes, the first byte has Group bit 0 and Local bit 0. Those bits are fixed for an exact literal prefix match; changing either bit produces a different prefix. A captured address matching these prefixes supports registry-level identification only.
Feasycom’s company profile describes it as an IoT products company with wireless connectivity R&D experience and a focus on wireless communication modules for IoT devices. That company-level product context does not map either prefix to a specific product. RFC 7042 explains the structure and interpretation of 48-bit MAC identifiers and their prefixes.
- Matching prefixes
78:9F:38and20:98:8E(24 bits each)- Device category
- Unknown; no supplied source maps a device category to these exact prefixes.
- Company
- Shenzhen Feasycom Co., Ltd [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefixes
78:9F:38and20:98:8E[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Industry
- IoT products and wireless connectivity [Confirmed] — https://www.feasycom.com/company-profile/
- Notable products
- Wireless communication modules for IoT devices [Confirmed] — https://www.feasycom.com/company-profile/
- Website
- https://www.feasycom.com/company-profile/ [Confirmed] — https://www.feasycom.com/company-profile/
- Device types
- Unknown [Unknown] — https://www.feasycom.com/company-profile/