Shanghai Chint low voltage electrical technology Co.,Ltd.
Any device whose MAC address begins with E4:21:50 has a network interface built by Shanghai Chint low voltage electrical technology Co.,Ltd.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.
- OUI prefix
- E4:21:50
- Organization
- Shanghai Chint low voltage electrical technology Co.,Ltd.
- Address
- 3857 Sixian Road, Songjiang District, Shanghai Shanghai Shanghai CN 201616
- Source
- IEEE OUI registry
Have a full MAC address? Look it up— we'll also tell you if it's a randomized (private) address rather than a real manufacturer prefix.
Assignment history (1)
The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.
- 2026-07-17Assigned to "Shanghai Chint low voltage electrical technology Co.,Ltd."