OUI Lookup
00a003
Siemens Switzerland Ltd., I B T HVP
Manufacturer Information
- OUI Prefix
- 00a003
- Manufacturer
- Siemens Switzerland Ltd., I B T HVP
- Address
- Building Technologies Division, International Headquarters Zug CH 6301
- Last updated
- 6/8/2026
Vendor Statistics
- Total prefixes
- 1
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix 00A003
The OUI prefix 00A003 is assigned to Siemens Switzerland Ltd., I B T HVP, based in Building Technologies Division, International Headquarters Zug CH 6301 . 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 Siemens Switzerland Ltd., I B T HVP.