OUI Lookup
0003b7
ZACCESS Systems
Manufacturer Information
- OUI Prefix
- 0003b7
- Manufacturer
- ZACCESS Systems
- Address
- 275 Shoreline Drive, #110 Redwood City CA US 94065
- Last updated
- 6/10/2026
Vendor Statistics
- Total prefixes
- 1
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix 0003B7
The OUI prefix 0003B7 is assigned to ZACCESS Systems, based in 275 Shoreline Drive, #110 Redwood City CA US 94065 . It is a MA-L type block of 24 bits (first three octets). Allows up to 16 million unique MAC addresses. If you find this prefix on your network, the devices belong to ZACCESS Systems.