MAC address successors and acquisitions

The current owners of prefixes that changed hands, with the former portfolios they absorbed.

Current owner Former owners Blocks Addresses
Commscope135919.9 billion
Cisco Systems, Inc35128.6 billion
Apple, Inc.43796.4 billion
Sony Corporation61602.7 billion
Hewlett Packard Enterprise41572.6 billion
Extreme Networks, Inc.61302.2 billion
Vantiva USA LLC41051.8 billion
Samsung Electronics Co.,Ltd4841.4 billion
Hewlett Packard5731.2 billion
Texas Instruments2681.1 billion
WNC Corporation254906 million
TP-Link Systems Inc.351856 million
Nokia248805 million
Sagemcom Broadband SAS442705 million
LG Electronics (Mobile Communications)240671 million
ALPSALPINE CO,.LTD237621 million
Ubiquiti Inc237604 million
Brocade Communications Systems LLC432537 million
Nortel Networks231520 million
HUAWEI TECHNOLOGIES CO.,LTD230503 million
Universal Global Scientific Industrial., Ltd230503 million
Sichuan Tianyi Comheart Telecom Co.,LTD130488 million
SKY UK LIMITED129487 million
Zhone Technologies, Inc.428470 million
AzureWave Technology Inc.226436 million
NETGEAR125419 million
Dell Inc.524403 million
Vantiva Technologies Belgium222369 million
Sony Interactive Entertainment Inc.221352 million
2Wire Inc120336 million
IBM Corp420336 million
3COM219319 million
Arcadyan Corporation219319 million
SAMSUNG ELECTRO-MECHANICS(THAILAND)118302 million
Xiaomi Communications Co Ltd418302 million
Fiberhome Telecommunication Technologies Co.,LTD116268 million
Motorola Mobility LLC, a Lenovo Company116268 million
ADB Broadband Italia215252 million
Intel Corporate114235 million
SAMSUNG ELECTRO MECHANICS CO., LTD.314235 million
Meta Platforms, Inc.213218 million
BlackBerry RTS212201 million
UNION MAN TECHNOLOGY CO.,LTD112201 million
3Com Ltd211185 million
Alcatel-Lucent Enterprise411185 million
Elitegroup Computer Systems Co.,Ltd.311185 million
Nokia Solutions and Networks GmbH & Co. KG111185 million
SHENZHEN GONGJIN ELECTRONICS CO.,LT111185 million
TCT mobile ltd111185 million
Kaon Group Co., Ltd.110168 million
Oracle Corporation110168 million
WEIFANG GOERTEK ELECTRONICS CO.,LTD210168 million
AltoBeam Inc.18134 million
MERCURY COMMUNICATION TECHNOLOGIES CO.,LTD.18134 million
Alcatel-Lucent IPD37117 million
Dish Technologies Corp27117 million
Ezurio, LLC17117 million
Hon Hai Precision Industry Co., Ltd.17117 million
Murata Manufacturing Co., Ltd.17117 million
Netis Technology Co., Ltd.27117 million
Sierra Wireless, ULC27117 million
AO26101 million
Artesyn Embedded Technologies16101 million
Broadcom16101 million
Cisco SPVTG26101 million
F5 Inc.16101 million
NEC Platforms, Ltd.16101 million
Wistron Corporation16101 million
BBK EDUCATIONAL ELECTRONICS CORP.,LTD.1583.9 million
Dell EMC1583.9 million
DTS INSIGHT Corporation2583.9 million
EYKON Solutions S.A.2583.9 million
FCNT LLC2583.9 million
Funshion Online Technologies Co.,Ltd1583.9 million
HPN Supply Chain1583.9 million
IEEE 802.1 Working Group1583.9 million
Juniper Networks1583.9 million
SHENZHEN BILIAN ELECTRONIC CO.,LTD1583.9 million
Shenzhen TINNO Mobile Technology Corp.1583.9 million
Tuya Smart Inc.2583.9 million
Vestel Elektronik San ve Tic. A.S.1583.9 million
Zyxel Communications Corporation2583.9 million
Hitachi Energy Germany AG4867.1 million
Altice Labs1467.1 million
ASKEY COMPUTER CORP1467.1 million
AUMOVIO Systems, Inc.1467.1 million
Comtrend Corporation2467.1 million
Google, Inc.1467.1 million
Inseego Wireless, Inc1467.1 million
KOKUSAI DENKI Electric Inc.2467.1 million
NETSCOUT SYSTEMS INC1467.1 million
Panasonic Corporation AVC Networks Company1467.1 million
Utility, Inc2467.1 million
Zebra Technologies Inc.2467.1 million
Adtran Inc1350.3 million
AirTies Wireless Networks1350.3 million
BSH Hausgeräte GmbH1350.3 million
BUFFALO.INC1350.3 million
Cisco-Linksys, LLC1350.3 million
FREEBOX SAS1350.3 million
GN Netcom A/S1350.3 million
Hangzhou H3C Technologies Co., Limited1350.3 million
I-O DATA, INC.1350.3 million
IEIT SYSTEMS Co., Ltd.1350.3 million
Madge Ltd.1350.3 million
NAKAYO Inc1350.3 million
Nokia Shanghai Bell Co., Ltd.1350.3 million
Phoenix Contact GmbH & Co. KG1350.3 million
QING DAO HAIER TELECOM CO.,LTD.1350.3 million
Qingdao Hisense Communications Co.,Ltd.1350.3 million
Qorvo International Pte. Ltd.1350.3 million
Tonly Technology Co. Ltd1350.3 million
Vanderbilt International (SWE) AB2350.3 million
Verifone, Inc.1350.3 million
Yulong Computer Telecommunication Scientific (Shenzhen) Co.,Ltd1350.3 million
Great Talent Technology Limited1536.7 million
SPEEDTECH CORP.1334.6 million
Accton Technology Corp1233.6 million
Actions Microelectronics1233.6 million
Allied Telesis, Inc.1233.6 million
Allied Telesis K.K.1233.6 million
Alps Alpine1233.6 million
Arista Networks1233.6 million
Asiarock Technology Limited1233.6 million
AT&T1233.6 million
AUMOVIO Czech Republic s.r.o.1233.6 million
AUMOVIO Germany GmbH1233.6 million
AUMOVIO Technologies Romania S.R.L.1233.6 million
B&R Industrial Automation GmbH1233.6 million
Breezecom, Ltd.1233.6 million
Charles Industries1233.6 million
Chiun Mai Communication System, Inc1233.6 million
Cisco Meraki1233.6 million
Communication Machinery Corporation1233.6 million
corega K.K1233.6 million
Crossmatch Technologies/HID Global1233.6 million
D-Link International1233.6 million
Eagle Wireless Engineering Centre SDN BHD1233.6 million
General Dynamics Mission Systems1233.6 million
GIGA-BYTE TECHNOLOGY CO.,LTD.1233.6 million
Gigaset Technologies GmbH1233.6 million
Hon Hai Precision Ind. Co.,Ltd.1233.6 million
HORYS TECHNOLOGIES LLC1233.6 million
HPRO1233.6 million
infomark1233.6 million
Intelbras1233.6 million
Intertech Services AG1233.6 million
JinQianMao Technology Co.,Ltd.1233.6 million
Kasda Networks Inc1233.6 million
Kontron eSystems GmbH1233.6 million
LONGCHEER TELECOMMUNICATION LIMITED1233.6 million
MediaTek Inc1233.6 million
Mercury Systems – Trusted Mission Solutions, Inc.1233.6 million
Metalligence Technology Corp.1233.6 million
Mitsubishi Electric Corporation1233.6 million
Molex CMS1233.6 million
Motorola Solutions Inc.1233.6 million
NAGTECH LLC1233.6 million
Nevion1233.6 million
nFore Technology Co., Ltd.1233.6 million
Nokia Solutions and Networks India Private Limited1233.6 million
Nurivoice Co., Ltd1233.6 million
OHSUNG1233.6 million
Panasonic Automotive Systems Co.,Ltd1233.6 million
Panasonic Connect Co., Ltd.1233.6 million
Panasonic Electric Works Co., Ltd.1233.6 million
PLANTRONICS, INC.1233.6 million
Qisda Corporation1233.6 million
Qualcomm Inc.1233.6 million
Sanmina-SCI1233.6 million
Schneider Electric1233.6 million
Seagate Cloud Systems Inc1233.6 million
Seagate Technology1233.6 million
SFR1233.6 million
SHENZHEN CHUANGWEI-RGB ELECTRONICS CO.,LTD1233.6 million
Siemens AG1233.6 million
SmarDTV Corporation1233.6 million
Sumitomo Electric Industries, Ltd1233.6 million
Ubee Interactive Co., Limited1233.6 million
Ultra Electronics Command & Control Systems1233.6 million
Universal Electronics, Inc.1233.6 million
Vantiva - Connected Home1233.6 million
Visteon Corporation1233.6 million
Wachendorff Automation GmbH & CO.KG1233.6 million
Westell Technologies Inc.1233.6 million
Westermo Network Technologies AB1233.6 million
Wireless Broadband Alliance, Inc1233.6 million
Shanghai Kanghai Information System CO.,LTD.13132.5 million
AUMOVIO France S.A.S.1217.8 million
Hangzhou Zhongxinghui Intelligent Technology Co., Ltd.1217.8 million
Illucere Srl1217.8 million
Scopus International Pvt. Ltd.1217.8 million
Tesla,Inc.1217.8 million
Versuni1217.8 million
Austco Marketing & Service (USA) ltd.1516.8 million
BAE Systems1316.8 million
Astronics Custom Control Concepts1216.8 million
AxyomCore Inc.1216.8 million
Creotech Quantum SA1216.8 million
Groupe Carrus1216.8 million
MATRIX COMSEC PRIVATE LIMITED1216.8 million
peiker acustic GmbH1216.8 million
PESA Inc.1216.8 million
Q-Free America, Inc.1216.8 million
TERACOM TELEMATICA S.A1216.8 million
ABB AG1116.8 million
ABB Switzerland Ltd1116.8 million
AboCom1116.8 million
Avaya Inc1116.8 million
Doble Engineering1116.8 million
Genexis BV1116.8 million
Harman/Becker Automotive Systems GmbH1116.8 million
LG Electronics1116.8 million
Maxlinear, Inc1116.8 million
MitraStar Technology Corp.1116.8 million
Mitsubishi Precision Co.,LTd.1116.8 million
TKH Security B.V.1116.8 million
Vantiva Connected Home - Technologies Telco1116.8 million
BBPOS Limited144.2 million
SHURE INCORPORATED363.2 million
Becklar, LLC133.1 million
Viridi Parente, Inc.242.1 million
Motec GmbH122.1 million
Bucher Automation Budapest161.1 million
MECCALTE SPA131.1 million
Morgan Schaffer131.1 million
Cleaveland/Price, Inc.121.1 million
Securiton AG121.1 million
Wartsila Voyage Oy21665.5 thousand
Potter Electric Signal Co. LLC11457.3 thousand
RCH SPA11041 thousand
Televic Rail GmbH11041 thousand
EA Elektro-Automatik GmbH1936.9 thousand
Peter Huber Kaeltemaschinenbau SE2936.9 thousand
Mettler Toledo1832.8 thousand
Elbit Systems of America1520.5 thousand
Contec Americas Inc.1416.4 thousand
HORIZON.INC2416.4 thousand
RealD, Inc.2416.4 thousand
RF Code1416.4 thousand
Nautel LTD1312.3 thousand
Cubic ITS, Inc. dba GRIDSMART Technologies128.2 thousand
Farmobile, LLC128.2 thousand
Fluid Components Intl128.2 thousand
HKC Security Ltd.128.2 thousand
Leonardo UK Ltd128.2 thousand
Panoramic Power128.2 thousand
SOREL GmbH128.2 thousand

Complete as of the current IEEE registry deploy. Dates are when each registration was first observed in public data, not legal assignment dates.