When I'm searching for MAC address covered in following OUIs with https://www.wireshark.org/tools/oui-lookup.html, e.g E0:3C:1C:E0:00:00, it shows "no matches". The following OUIs are available in Wireshark manufacturer database.
E0:3C:1C IEEERegi IEEE Registration Authority
E0:3C:1C:00:00:00/28 Scangrip
E0:3C:1C:10:00:00/28 ShikinoH Shikino High-Tech Co., Ltd.
E0:3C:1C:20:00:00/28 HopliteI Hoplite Industries, Inc.
E0:3C:1C:30:00:00/28 Dewetron Dewetron GmbH
E0:3C:1C:40:00:00/28 Earable Earable Inc.
E0:3C:1C:50:00:00/28 Awesomet Awesometek Co., Ltd
E0:3C:1C:60:00:00/28 GhinFDig GhinF Digital information technology (hangzhou) Co., Ltd
E0:3C:1C:70:00:00/28 TapHomes Tap Home, s.r.o.
E0:3C:1C:80:00:00/28 JiangsuR Jiangsu Riying Electronics Co.,Ltd.
E0:3C:1C:90:00:00/28 OcamarTe Ocamar Technologies (Shanghai) Co.,Ltd.
E0:3C:1C:A0:00:00/28 MELAGMed MELAG Medizintechnik GmbH & Co. KG
E0:3C:1C:B0:00:00/28 Hangzhou Hangzhou Uni-Ubi Co.,Ltd.
E0:3C:1C:C0:00:00/28 MeferiTe Meferi Technologies Co.,Ltd.
E0:3C:1C:D0:00:00/28 Sprintsh Sprintshield d.o.o.
E0:3C:1C:E0:00:00/28 Annapurn Annapurna labs
