MAC Address Lookup
Find the vendor name of a device by entering an OUI or a MAC address
CEM Ltd
MAC address prefix 70:B3:D5:40:1 is registered to CEM Ltd, located at 700 Blue Point RoadHoltsville NY 11742US.
This registration is classified as MA-S (Mac Address Block Small, formerly known as OUI-36) containing approximately 4096 MAC addresses per block
The prefix was initially registered on 05 April 2018, with the most recent update made on 30 June 2026.
OUI: 70:B3:D5:40:1
Vendor name: CEM Ltd
Address:
Assignment Type MA-S 700 Blue Point Road
Holtsville NY 11742
US.
Mac Address Block Small (previously named OUI-36, encompasses IAB Assignments). Number of address 2^12 (4096)
Last updated: 30 June 2026
Initial registration: 05 April 2018
