OUI Lookup
001781
Greystone Data System, Inc.
Manufacturer Information
- OUI Prefix
- 001781
- Manufacturer
- Greystone Data System, Inc.
- Address
- 40800 Encycopedia Circle Fremont CA US 94538
- Last updated
- 6/11/2026
Vendor Statistics
- Total prefixes
- 1
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix 001781
The OUI prefix 001781 is assigned to Greystone Data System, Inc., based in 40800 Encycopedia Circle Fremont CA US 94538 . 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 Greystone Data System, Inc..