OUI Lookup
ec74d7
Grandstream Networks Inc
Manufacturer Information
- OUI Prefix
- ec74d7
- Manufacturer
- Grandstream Networks Inc
- Address
- 126 brookline avenue boston MA US 02215
- Last updated
- 6/10/2026
Vendor Statistics
- Total prefixes
- 1
- Block type
- MA-L
- Available addresses
- ~16 millones
About prefix EC74D7
The OUI prefix EC74D7 is assigned to Grandstream Networks Inc, based in 126 brookline avenue boston MA US 02215 . 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 Grandstream Networks Inc.