OUI Lookup
00c03d
WIESEMANN & THEIS GMBH
Manufacturer Information
- OUI Prefix
- 00c03d
- Manufacturer
- WIESEMANN & THEIS GMBH
- Address
- WITTENER STR. 312 DE
- Last updated
- 6/10/2026
Vendor Statistics
- Total prefixes
- 1
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix 00C03D
The OUI prefix 00C03D is assigned to WIESEMANN & THEIS GMBH, based in WITTENER STR. 312 DE . 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 WIESEMANN & THEIS GMBH.