IR
IEEE Registrant 442 Prefixes

IEEE Registration Authority

standards.ieee.org

IEEE Registration Authority, accessible at standards.ieee.org, manages 442 unique MAC address prefixes. These prefixes have a total block size of 7.4 billion addresses.

The allocation includes the following types: IAB(Individual Address Block), MA-L(MAC Address Block Large, 16,777,216 addresses each) and MA-S(MAC Address Block Small, previously named OUI-36, encompasses IAB assignments, 4,096 addresses each).

The company registered its MAC address allocation on 09 November 2000, and the most recent update was made on 26 October 2026. These allocations support network identification and communication globally.

Unique prefixes 442
Block Size 7381982790 (7.38 G)
First registration 09 November 2000
Last updated 26 October 2026

Entity Details

Unique prefixes 442
Block Size 7381982790 (7.38 G)
Website standards.ieee.org
First registration 09 November 2000
Last updated 26 October 2026

Types

IAB: Block Type

Individual Address Blocks. Number of address 2^24 (~16 Million)

MA-L: Block Type

Mac Address Block Large (previously named OUI). Number of address 2^24 (~16 Million)

MA-S: Block Type

Mac Address Block Small (previously named OUI-36, encompasses IAB Assignments). Number of address 2^12 (4096)

Registered MAC Prefixes

All Organizationally Unique Identifiers and MAC ranges assigned to this vendor

442 Records
MAC PrefixTypeRegistration Date
00:1B:C5 MA-L2007-04-09
00:50:C2 MA-L2000-11-09
00:50:C2:F5:8 IAB2012-03-25
00:55:DA MA-L2015-11-17
00:69:67 MA-L2019-09-21
00:6A:5E MA-L2025-07-24
00:8D:F4 MA-L2023-10-19
04:11:19 MA-L2020-12-12
04:58:5D MA-L2025-05-21
04:71:4B MA-L2017-02-21
04:A1:6F MA-L2025-02-11
04:C3:E6 MA-L2018-04-13
04:C9:8B MA-L2025-03-21
04:D1:6E MA-L2019-07-31
04:EC:A9 MA-L2026-08-18
04:EE:E8 MA-L2021-11-03
08:25:32 MA-L2026-07-01
08:26:AE MA-L2021-11-30
08:3C:03 MA-L2026-01-12
08:63:32 MA-L2024-02-09
08:DA:33 MA-L2024-05-29
08:ED:02 MA-L2017-01-07
08:F8:0D MA-L2021-10-07
0C:0E:C1 MA-L2026-05-13
0C:47:A9 MA-L2024-10-25
0C:5C:B5 MA-L2021-01-21
0C:73:EB MA-L2018-01-28
0C:7F:ED MA-L2022-04-13
0C:86:29 MA-L2021-12-30
0C:BF:B4 MA-L2025-10-17
0C:CC:47 MA-L2022-09-27
0C:EF:AF MA-L2014-10-13
0C:FE:5D MA-L2018-08-11
10:06:48 MA-L2023-09-20
10:07:23 MA-L2014-08-28
10:54:D2 MA-L2021-12-17
10:63:A3 MA-L2024-04-01
10:DC:B6 MA-L2019-07-13
14:1F:BA MA-L2014-04-22
14:4F:D7 MA-L2017-01-07
14:AE:85 MA-L2019-12-04
18:45:B3 MA-L2021-09-25
18:66:96 MA-L2025-01-14
18:74:E2 MA-L2021-03-30
18:9B:A5 MA-L2017-05-24
18:A5:9C MA-L2022-02-10
18:C3:E4 MA-L2026-02-10
18:C3:F4 MA-L2022-05-24
18:D7:93 MA-L2021-11-11
18:FD:CB MA-L2020-07-17
1C:21:D1 MA-L2015-11-17
1C:59:74 MA-L2022-02-17
1C:82:59 MA-L2019-03-02
1C:A0:D3 MA-L2016-11-17
1C:A0:EF MA-L2021-02-02
1C:AE:3E MA-L2021-07-27
1C:C0:E1 MA-L2016-08-08
1C:CA:E3 MA-L2015-11-17
1C:FD:08 MA-L2018-07-22
20:0A:0D MA-L2019-10-10
20:2B:DA MA-L2025-10-29
20:85:93 MA-L2019-06-13
20:B3:7F MA-L2026-03-10
20:CE:2A MA-L2021-02-11
24:15:10 MA-L2019-05-31
24:4E:7B MA-L2016-08-12
24:5D:FC MA-L2020-12-29
24:86:25 MA-L2024-06-26
24:A1:0D MA-L2025-09-10
24:A3:F0 MA-L2024-08-29
28:2C:02 MA-L2017-10-11
28:36:13 MA-L2021-06-15
28:36:38 MA-L2016-04-13
28:B7:7C MA-L2020-06-16
28:F5:37 MA-L2017-04-22
28:F8:C6 MA-L2023-11-15
28:FD:80 MA-L2015-11-17
2C:16:BD MA-L2019-04-17
2C:26:5F MA-L2014-11-11
2C:27:9E MA-L2017-06-11
2C:48:35 MA-L2018-02-11
2C:69:1D MA-L2022-05-17
2C:6A:6F MA-L2015-11-17
2C:7A:F4 MA-L2025-05-01
2C:C4:4F MA-L2023-10-19
2C:D1:41 MA-L2015-11-17
30:09:F9 MA-L2018-06-02
30:0A:60 MA-L2018-06-14
30:1F:9A MA-L2017-12-11
30:3D:51 MA-L2022-05-03
30:43:D7 MA-L2022-01-15
30:49:50 MA-L2020-04-25
30:BB:28 MA-L2026-08-11
34:00:8A MA-L2017-05-24
34:04:9E MA-L2016-10-03
34:29:8F MA-L2017-05-24
34:46:63 MA-L2024-05-18
34:B5:F3 MA-L2025-07-11
34:C8:D6 MA-L2024-01-11
34:D0:B8 MA-L2017-07-26
34:D7:F5 MA-L2026-01-22
34:E1:D1 MA-L2019-01-09
38:05:25 MA-L2025-04-01
38:1F:26 MA-L2022-01-26
38:3A:21 MA-L2016-06-27
38:73:EA MA-L2017-08-20
38:A8:CD MA-L2021-07-09
38:B1:4E MA-L2026-03-04
38:B1:9E MA-L2018-10-20
38:B8:EB MA-L2015-11-17
38:F7:CD MA-L2020-03-17
38:FD:FE MA-L2015-12-03
3C:24:F0 MA-L2018-01-28
3C:39:E7 MA-L2014-09-07
3C:42:7E MA-L2018-04-05
3C:6A:2C MA-L2018-06-29
3C:DC:03 MA-L2024-09-09
3C:FA:D3 MA-L2019-11-09
40:11:75 MA-L2019-07-05
40:2C:76 MA-L2019-10-22
40:48:FD MA-L2017-09-06
40:D8:55 MA-L2012-10-05
40:ED:98 MA-L2016-09-22
40:F3:85 MA-L2016-11-17
44:03:77 MA-L2019-08-14
44:6F:D8 MA-L2020-11-25
44:A9:2C MA-L2021-05-14
44:D5:F2 MA-L2019-05-15
48:08:EB MA-L2025-08-19
48:0B:B2 MA-L2017-12-28
48:5E:0E MA-L2024-07-16
48:65:EE MA-L2016-08-08
48:DA:35 MA-L2023-06-12
48:E6:63 MA-L2024-02-22
48:E6:C6 MA-L2024-06-03
4C:4B:F9 MA-L2019-06-25
4C:65:A8 MA-L2017-03-29
4C:6E:44 MA-L2026-04-04
4C:74:A7 MA-L2022-08-11
4C:81:BE MA-L2026-10-01
4C:91:7A MA-L2019-07-02
4C:93:A6 MA-L2020-06-04
4C:BC:98 MA-L2018-11-24
4C:E1:73 MA-L2016-07-14
4C:EA:41 MA-L2023-07-29
50:0B:91 MA-L2016-08-26
50:19:11 MA-L2026-06-25
50:48:2C MA-L2023-05-04
50:62:55 MA-L2019-08-24
50:A0:30 MA-L2023-03-10
50:A4:D0 MA-L2016-10-12
50:DE:19 MA-L2023-03-10
50:FA:CB MA-L2025-08-27
50:FF:99 MA-L2016-01-25
54:08:3B MA-L2023-01-19
54:91:AF MA-L2023-05-31
54:9A:11 MA-L2015-11-17
54:A4:93 MA-L2019-07-25
58:20:8A MA-L2020-07-23
58:23:BC MA-L2024-12-20
58:47:CA MA-L2022-06-15
58:48:49 MA-L2021-05-25
58:76:07 MA-L2025-11-13
58:95:D8 MA-L2020-08-25
58:AD:08 MA-L2025-12-04
58:C4:1E MA-L2023-04-14
58:E8:76 MA-L2016-05-14
58:FC:DB MA-L2014-05-27
5C:5A:4C MA-L2024-04-15
5C:5C:75 MA-L2025-11-25
5C:6A:EC MA-L2022-12-07
5C:85:7E MA-L2020-05-15
5C:87:D8 MA-L2024-04-09
5C:AB:22 MA-L2026-10-17
5C:F2:86 MA-L2015-12-11
5C:F8:38 MA-L2023-08-16
60:15:92 MA-L2021-01-15
60:15:9F MA-L2025-12-20
60:95:CE MA-L2019-03-12
60:A4:34 MA-L2024-03-14
60:D7:E3 MA-L2017-02-21
64:31:39 MA-L2019-09-06
64:33:B5 MA-L2021-06-03
64:62:66 MA-L2019-12-15
64:FB:81 MA-L2015-11-17
68:79:12 MA-L2020-09-23
68:91:D0 MA-L2016-03-01
68:DA:73 MA-L2023-04-24
6C:15:24 MA-L2022-03-01
6C:27:C8 MA-L2025-03-05
6C:2A:DF MA-L2023-02-22
6C:47:80 MA-L2026-01-31
6C:5C:3D MA-L2018-07-28
6C:93:08 MA-L2022-01-06
6C:DF:FB MA-L2018-09-09
70:06:92 MA-L2023-02-07
70:50:E7 MA-L2022-03-18
70:5A:6F MA-L2022-10-28
70:69:79 MA-L2020-03-26
70:B3:D5 MA-L2014-01-12
70:B3:D5:9F:3 MA-S2015-08-12
70:F8:E7 MA-L2016-06-11
74:19:F8 MA-L2014-01-12
74:1A:E0 MA-L2017-07-01
74:25:84 MA-L2024-09-23
74:33:36 MA-L2025-10-10
74:5B:C5 MA-L2018-12-08
74:A2:35 MA-L2026-06-11
74:E1:4A MA-L2014-07-13
74:F8:DB MA-L2015-11-17
78:13:05 MA-L2021-04-15
78:39:2D MA-L2023-10-26
78:5E:E8 MA-L2021-06-24
78:72:64 MA-L2021-08-20
78:78:35 MA-L2025-06-23
78:C2:C0 MA-L2015-11-17
78:CA:83 MA-L2015-11-17
78:D4:F1 MA-L2020-11-10
78:D8:00 MA-L2017-04-18
78:E9:96 MA-L2023-12-28
7C:45:F9 MA-L2022-11-24
7C:47:7C MA-L2016-01-02
7C:70:BC MA-L2014-04-02
7C:83:34 MA-L2021-07-16
7C:BA:CC MA-L2017-04-18
7C:BC:84 MA-L2018-09-09
7C:CB:E2 MA-L2016-08-26
7C:E4:A1 MA-L2026-07-22
80:02:F4 MA-L2022-03-25
80:0A:80 MA-L2015-11-17
80:1D:0D MA-L2026-03-20
80:77:86 MA-L2025-12-27
80:7B:85 MA-L2015-11-17
80:A5:79 MA-L2024-01-19
80:E4:DA MA-L2015-11-17
84:11:C2 MA-L2020-09-16
84:89:EC MA-L2018-06-02
84:8B:CD MA-L2019-02-20
84:B3:86 MA-L2022-10-04
84:E0:F4 MA-L2016-06-11
88:3C:C5 MA-L2023-03-10
88:5D:90 MA-L2015-11-17
88:5F:E8 MA-L2017-12-28
88:A6:EF MA-L2023-05-25
88:A9:A7 MA-L2017-12-11
88:C9:B3 MA-L2021-02-23
8C:14:7D MA-L2017-03-29
8C:19:2D MA-L2016-04-01
8C:1C:DA MA-L2018-01-28
8C:1F:64 MA-L2021-04-07
8C:47:6E MA-L2020-09-29
8C:51:09 MA-L2022-04-06
8C:55:70 MA-L2023-11-03
8C:59:3C MA-L2019-03-29
8C:5D:B2 MA-L2022-11-11
8C:A6:82 MA-L2023-12-05
8C:AE:49 MA-L2020-10-09
8C:C8:F4 MA-L2016-10-30
90:15:64 MA-L2024-02-01
90:4E:91 MA-L2017-06-11
90:88:A9 MA-L2024-11-20
90:A9:F7 MA-L2023-09-20
90:C6:82 MA-L2015-11-17
90:E2:FC MA-L2019-11-28
90:F4:21 MA-L2023-03-10
94:05:BB MA-L2020-01-07
94:3E:FD MA-L2025-02-21
94:C9:B7 MA-L2021-10-20
94:CC:04 MA-L2019-12-24
94:FB:A7 MA-L2020-03-05
98:02:D8 MA-L2015-11-17
98:06:37 MA-L2019-05-20
98:27:82 MA-L2020-12-02
98:6D:35 MA-L2016-01-25
98:6E:E8 MA-L2021-07-31
98:80:BB MA-L2021-08-10
98:8F:E0 MA-L2021-12-07
98:AA:FC MA-L2017-01-07
98:F9:C7 MA-L2018-08-16
98:FC:84 MA-L2020-07-08
9C:43:1E MA-L2017-10-11
9C:69:B4 MA-L2018-10-13
9C:E4:50 MA-L2025-09-04
9C:E5:49 MA-L2025-01-28
9C:F6:DD MA-L2018-06-02
A0:02:4A MA-L2023-03-10
A0:19:B2 MA-L2018-03-02
A0:22:4E MA-L2019-09-27
A0:24:90 MA-L2026-05-26
A0:28:33 MA-L2018-06-02
A0:3E:6B MA-L2015-11-17
A0:BB:3E MA-L2015-11-17
A0:C5:F2 MA-L2017-03-29
A4:11:63 MA-L2016-11-26
A4:3B:FA MA-L2014-02-25
A4:4F:29 MA-L2014-09-21
A4:4F:3E MA-L2026-04-16
A4:53:EE MA-L2020-10-22
A4:58:0F MA-L2016-09-03
A4:59:D3 MA-L2024-12-10
A4:DA:22 MA-L2017-11-12
A4:ED:43 MA-L2018-06-02
A8:3F:A1 MA-L2018-07-22
A8:5B:36 MA-L2021-04-24
AC:1D:DF MA-L2017-07-23
AC:64:DD MA-L2016-07-14
AC:86:D1 MA-L2024-07-08
AC:EF:92 MA-L2024-10-17
B0:1F:81 MA-L2014-05-27
B0:47:5E MA-L2024-10-04
B0:B3:53 MA-L2019-11-22
B0:C5:CA MA-L2015-11-17
B0:CC:CE MA-L2025-06-12
B0:FD:0B MA-L2019-02-09
B0:FF:72 MA-L2023-03-24
B4:37:D1 MA-L2015-11-17
B4:4B:D6 MA-L2018-04-05
B4:4D:43 MA-L2023-03-01
B4:A2:EB MA-L2019-04-12
B4:AB:F3 MA-L2025-12-17
B4:DF:43 MA-L2026-07-29
B8:4C:87 MA-L2023-07-06
B8:D8:12 MA-L2014-07-13
B8:F4:53 MA-L2026-10-26
BC:31:98 MA-L2023-04-03
BC:34:00 MA-L2014-03-14
BC:66:41 MA-L2014-07-13
BC:97:40 MA-L2019-03-18
BC:DF:E1 MA-L2025-01-04
C0:22:F1 MA-L2023-06-23
C0:48:2F MA-L2024-08-21
C0:61:9A MA-L2020-06-25
C0:83:59 MA-L2018-04-22
C0:9B:F4 MA-L2020-02-12
C0:D3:91 MA-L2016-05-14
C0:EA:C3 MA-L2022-11-17
C0:FB:F9 MA-L2021-03-10
C4:7C:8D MA-L2016-03-01
C4:83:72 MA-L2022-07-07
C4:95:4D MA-L2019-09-17
C4:98:94 MA-L2022-07-22
C4:A1:0E MA-L2022-03-08
C4:A5:59 MA-L2022-10-17
C4:CC:37 MA-L2024-03-06
C4:FF:84 MA-L2024-07-24
C4:FF:BC MA-L2017-10-31
C8:2C:2B MA-L2019-02-04
C8:5C:E2 MA-L2023-07-18
C8:63:14 MA-L2019-01-23
C8:6B:BC MA-L2023-04-07
C8:8E:D1 MA-L2015-11-17
C8:F1:0A MA-L2026-09-22
C8:F5:D6 MA-L2021-03-04
C8:FF:BF MA-L2024-03-22
CC:1B:E0 MA-L2015-11-17
CC:22:37 MA-L2017-07-01
CC:39:53 MA-L2026-07-10
CC:4F:5C MA-L2020-08-05
CC:82:7B MA-L2026-09-09
CC:C2:61 MA-L2020-04-02
CC:D3:1E MA-L2016-03-04
CC:D3:9D MA-L2018-10-13
CC:E7:DE MA-L2026-03-28
CC:F7:22 MA-L2026-10-07
D0:14:11 MA-L2020-05-02
D0:15:BB MA-L2023-05-16
D0:16:F0 MA-L2022-12-31
D0:22:12 MA-L2014-08-20
D0:5F:64 MA-L2019-05-03
D0:76:50 MA-L2014-02-25
D0:93:95 MA-L2022-12-16
D0:96:86 MA-L2022-07-30
D0:9F:D9 MA-L2021-03-13
D0:A0:11 MA-L2023-12-15
D0:AA:5F MA-L2024-11-27
D0:C8:57 MA-L2019-03-23
D0:D9:4F MA-L2016-04-01
D0:DA:24 MA-L2026-07-31
D4:20:00 MA-L2022-06-24
D4:25:CC MA-L2018-10-13
D4:61:37 MA-L2022-08-24
D4:7C:44 MA-L2018-03-17
D4:A0:FB MA-L2025-05-28
D4:BA:BA MA-L2022-07-13
D8:86:0B MA-L2018-11-16
DC:36:43 MA-L2021-11-19
DC:44:27 MA-L2015-11-17
DC:4A:9E MA-L2020-09-04
DC:76:C3 MA-L2025-04-10
DC:E5:33 MA-L2017-10-31
E0:23:3B MA-L2025-08-12
E0:38:2D MA-L2022-09-13
E0:3C:1C MA-L2023-01-11
E0:5A:9F MA-L2018-11-16
E0:B6:F5 MA-L2016-01-31
E4:1E:0A MA-L2019-01-23
E4:4C:C7 MA-L2018-12-01
E4:95:6E MA-L2014-07-13
E8:18:63 MA-L2014-08-20
E8:6C:C7 MA-L2020-12-19
E8:78:29 MA-L2021-04-06
E8:B4:70 MA-L2020-02-21
E8:F6:D7 MA-L2025-10-01
E8:FF:1E MA-L2023-11-23
EC:5B:CD MA-L2024-05-03
EC:74:CD MA-L2024-11-09
EC:9A:0C MA-L2023-10-19
EC:9F:0D MA-L2017-08-04
EC:A7:B1 MA-L2024-07-29
EC:BA:34 MA-L2026-08-26
F0:12:04 MA-L2025-04-23
F0:22:1D MA-L2022-09-02
F0:23:B9 MA-L2017-02-21
F0:2A:2B MA-L2021-05-05
F0:40:AF MA-L2025-09-18
F0:41:C8 MA-L2017-12-11
F0:AC:D7 MA-L2016-04-27
F0:D7:AF MA-L2020-04-15
F4:0E:11 MA-L2014-04-22
F4:1A:79 MA-L2023-09-20
F4:20:55 MA-L2024-06-17
F4:3A:FA MA-L2024-08-08
F4:69:D5 MA-L2020-05-27
F4:70:0C MA-L2021-09-02
F4:90:CB MA-L2020-01-21
F4:97:9D MA-L2025-08-02
F4:A4:54 MA-L2021-09-16
F8:02:78 MA-L2014-10-25
F8:1D:78 MA-L2016-06-27
F8:2B:E6 MA-L2025-03-13
F8:75:28 MA-L2026-05-06
F8:7A:39 MA-L2024-04-25
F8:8A:3C MA-L2017-03-29
F8:B5:68 MA-L2017-09-22
F8:C9:D6 MA-L2026-04-25
FC:61:79 MA-L2022-04-23
FC:A2:DF MA-L2025-05-13
FC:A4:7A MA-L2019-04-25
FC:CD:2F MA-L2020-08-15
FC:D2:B6 MA-L2018-12-20
FC:E4:98 MA-L2025-07-03
FC:FF:AA MA-L2014-05-27