OUI Lookup
000291
Open Network Co., Ltd.
Manufacturer Information
- OUI Prefix
- 000291
- Manufacturer
- Open Network Co., Ltd.
- Address
- Seishin Bldg., 2-5-10 Shinjuku JAPAN JP 160-0022
- Last updated
- 6/11/2026
Vendor Statistics
- Total prefixes
- 1
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix 000291
The OUI prefix 000291 is assigned to Open Network Co., Ltd., based in Seishin Bldg., 2-5-10 Shinjuku JAPAN JP 160-0022 . 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 Open Network Co., Ltd..