OUI Lookup
00a03d
OPTO-22
Manufacturer Information
- OUI Prefix
- 00a03d
- Manufacturer
- OPTO-22
- Address
- 43044 BUSINESS PARK DR. TEMECULA CA US 92590
- Last updated
- 6/8/2026
Vendor Statistics
- Total prefixes
- 1
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix 00A03D
The OUI prefix 00A03D is assigned to OPTO-22, based in 43044 BUSINESS PARK DR. TEMECULA CA US 92590 . 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 OPTO-22.