OUI Lookup
a40e2b
Facebook Inc
Manufacturer Information
- OUI Prefix
- a40e2b
- Manufacturer
- Facebook Inc
- Address
- 1 Hacker Way Menlo Park CA US 94025
- Last updated
- 6/8/2026
Vendor Statistics
- Total prefixes
- 2
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix A40E2B
The OUI prefix A40E2B is assigned to Facebook Inc, based in 1 Hacker Way Menlo Park CA US 94025 . 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 Facebook Inc.