Microsoft Corporation 有多少个 MAC 地址前缀（OUI）？

根据 IEEE 官方注册库，Microsoft Corporation 共注册了 100 个 OUI / MAC 地址前缀，例如 00:03:FF、00:12:5A、00:15:5D 等。

如何判断一个 MAC 地址是否属于 Microsoft Corporation？

取 MAC 地址的前缀（前 6~9 位十六进制）与本页列出的 Microsoft Corporation 前缀比对即可；也可直接使用 MAC 地址厂商查询工具自动匹配。

MAC地址厂商查询的数据来源是什么？

数据来自 IEEE 注册管理机构（Registration Authority）公开的 OUI/MA 数据库，包含 MA-L（24位）、MA-M（28位）、MA-S（36位）三张表，本工具按最长前缀优先匹配以保证准确归属。

支持哪些 MAC 地址格式？

支持冒号、连字符、点分以及无分隔等任意写法，例如 00:1B:44:11:3A:B7、00-1B-44-11-3A-B7、001b.4411.3ab7，大小写均可。也可只输入前 6 位或更长的前缀。

为什么有些 MAC 地址查不到厂商？

若 MAC 的第一个字节 U/L 位为 1，则属于本地管理地址（如虚拟机、随机化 MAC），并未在 IEEE 注册，自然查不到厂商；此外极少数新分配前缀可能尚未收录。

单播、多播、本地管理是什么意思？

MAC 第一个字节的最低位（I/G 位）为 0 表示单播、为 1 表示多播；次低位（U/L 位）为 0 表示全局唯一（由 IEEE 分配 OUI），为 1 表示本地管理。全为 FF 则是广播地址。

数据是否安全？会被上传吗？

查询仅把 MAC 前缀发送到本站接口做厂商匹配，不保存任何记录；属性解析在本地浏览器完成，隐私安全。

Microsoft Corporation

该厂商在 IEEE 注册的 OUI / MAC 地址前缀清单，共 100 个。

100

OUI 前缀总数

100

MA-L（24位）

MA-M（28位）

MA-S（36位）

想根据具体 MAC 地址反查厂商？

打开 MAC 地址厂商查询

OUI 前缀清单

共 100 个

OUI 前缀	注册类型	前缀位长	地址容量	示例 MAC
`00:03:FF`	MA-L	24 bit	16,777,216	`00:03:FF:00:00:00`
`00:12:5A`	MA-L	24 bit	16,777,216	`00:12:5A:00:00:00`
`00:15:5D`	MA-L	24 bit	16,777,216	`00:15:5D:00:00:00`
`00:17:FA`	MA-L	24 bit	16,777,216	`00:17:FA:00:00:00`
`00:1D:D8`	MA-L	24 bit	16,777,216	`00:1D:D8:00:00:00`
`00:22:48`	MA-L	24 bit	16,777,216	`00:22:48:00:00:00`
`00:25:AE`	MA-L	24 bit	16,777,216	`00:25:AE:00:00:00`
`04:27:28`	MA-L	24 bit	16,777,216	`04:27:28:00:00:00`
`08:35:7D`	MA-L	24 bit	16,777,216	`08:35:7D:00:00:00`
`0C:35:26`	MA-L	24 bit	16,777,216	`0C:35:26:00:00:00`
`0C:41:3E`	MA-L	24 bit	16,777,216	`0C:41:3E:00:00:00`
`0C:E7:25`	MA-L	24 bit	16,777,216	`0C:E7:25:00:00:00`
`10:2F:6B`	MA-L	24 bit	16,777,216	`10:2F:6B:00:00:00`
`10:7A:2A`	MA-L	24 bit	16,777,216	`10:7A:2A:00:00:00`
`10:C7:35`	MA-L	24 bit	16,777,216	`10:C7:35:00:00:00`
`14:9A:10`	MA-L	24 bit	16,777,216	`14:9A:10:00:00:00`
`14:CB:65`	MA-L	24 bit	16,777,216	`14:CB:65:00:00:00`
`1C:1A:DF`	MA-L	24 bit	16,777,216	`1C:1A:DF:00:00:00`
`20:16:42`	MA-L	24 bit	16,777,216	`20:16:42:00:00:00`
`20:62:74`	MA-L	24 bit	16,777,216	`20:62:74:00:00:00`
`20:A9:9B`	MA-L	24 bit	16,777,216	`20:A9:9B:00:00:00`
`28:16:A8`	MA-L	24 bit	16,777,216	`28:16:A8:00:00:00`
`28:18:78`	MA-L	24 bit	16,777,216	`28:18:78:00:00:00`
`28:EA:0B`	MA-L	24 bit	16,777,216	`28:EA:0B:00:00:00`
`2C:29:97`	MA-L	24 bit	16,777,216	`2C:29:97:00:00:00`
`2C:54:91`	MA-L	24 bit	16,777,216	`2C:54:91:00:00:00`
`38:33:C5`	MA-L	24 bit	16,777,216	`38:33:C5:00:00:00`
`38:56:3D`	MA-L	24 bit	16,777,216	`38:56:3D:00:00:00`
`3C:83:75`	MA-L	24 bit	16,777,216	`3C:83:75:00:00:00`
`3C:FA:06`	MA-L	24 bit	16,777,216	`3C:FA:06:00:00:00`
`40:12:77`	MA-L	24 bit	16,777,216	`40:12:77:00:00:00`
`40:8E:2C`	MA-L	24 bit	16,777,216	`40:8E:2C:00:00:00`
`44:16:22`	MA-L	24 bit	16,777,216	`44:16:22:00:00:00`
`48:50:73`	MA-L	24 bit	16,777,216	`48:50:73:00:00:00`
`48:7B:2F`	MA-L	24 bit	16,777,216	`48:7B:2F:00:00:00`
`48:86:E8`	MA-L	24 bit	16,777,216	`48:86:E8:00:00:00`
`4C:3B:DF`	MA-L	24 bit	16,777,216	`4C:3B:DF:00:00:00`
`54:4C:8A`	MA-L	24 bit	16,777,216	`54:4C:8A:00:00:00`
`58:79:61`	MA-L	24 bit	16,777,216	`58:79:61:00:00:00`
`5C:BA:37`	MA-L	24 bit	16,777,216	`5C:BA:37:00:00:00`
`68:6C:E6`	MA-L	24 bit	16,777,216	`68:6C:E6:00:00:00`
`68:F7:D8`	MA-L	24 bit	16,777,216	`68:F7:D8:00:00:00`
`6C:15:44`	MA-L	24 bit	16,777,216	`6C:15:44:00:00:00`
`6C:5D:3A`	MA-L	24 bit	16,777,216	`6C:5D:3A:00:00:00`
`70:A8:A5`	MA-L	24 bit	16,777,216	`70:A8:A5:00:00:00`
`70:BC:10`	MA-L	24 bit	16,777,216	`70:BC:10:00:00:00`
`70:F8:AE`	MA-L	24 bit	16,777,216	`70:F8:AE:00:00:00`
`74:76:1F`	MA-L	24 bit	16,777,216	`74:76:1F:00:00:00`
`74:C4:12`	MA-L	24 bit	16,777,216	`74:C4:12:00:00:00`
`74:D8:09`	MA-L	24 bit	16,777,216	`74:D8:09:00:00:00`
`74:E2:8C`	MA-L	24 bit	16,777,216	`74:E2:8C:00:00:00`
`78:86:2E`	MA-L	24 bit	16,777,216	`78:86:2E:00:00:00`
`7C:6D:12`	MA-L	24 bit	16,777,216	`7C:6D:12:00:00:00`
`7C:C0:AA`	MA-L	24 bit	16,777,216	`7C:C0:AA:00:00:00`
`80:C5:E6`	MA-L	24 bit	16,777,216	`80:C5:E6:00:00:00`
`84:57:33`	MA-L	24 bit	16,777,216	`84:57:33:00:00:00`
`84:63:D6`	MA-L	24 bit	16,777,216	`84:63:D6:00:00:00`
`84:B1:E2`	MA-L	24 bit	16,777,216	`84:B1:E2:00:00:00`
`90:20:D7`	MA-L	24 bit	16,777,216	`90:20:D7:00:00:00`
`90:6A:EB`	MA-L	24 bit	16,777,216	`90:6A:EB:00:00:00`
`94:9A:A9`	MA-L	24 bit	16,777,216	`94:9A:A9:00:00:00`
`98:5F:D3`	MA-L	24 bit	16,777,216	`98:5F:D3:00:00:00`
`98:7A:14`	MA-L	24 bit	16,777,216	`98:7A:14:00:00:00`
`9C:6C:15`	MA-L	24 bit	16,777,216	`9C:6C:15:00:00:00`
`9C:AA:1B`	MA-L	24 bit	16,777,216	`9C:AA:1B:00:00:00`
`A0:4A:5E`	MA-L	24 bit	16,777,216	`A0:4A:5E:00:00:00`
`A0:85:FC`	MA-L	24 bit	16,777,216	`A0:85:FC:00:00:00`
`A8:8C:3E`	MA-L	24 bit	16,777,216	`A8:8C:3E:00:00:00`
`AC:8E:BD`	MA-L	24 bit	16,777,216	`AC:8E:BD:00:00:00`
`B8:31:B5`	MA-L	24 bit	16,777,216	`B8:31:B5:00:00:00`
`B8:4F:D5`	MA-L	24 bit	16,777,216	`B8:4F:D5:00:00:00`
`B8:5C:5C`	MA-L	24 bit	16,777,216	`B8:5C:5C:00:00:00`
`B8:BA:66`	MA-L	24 bit	16,777,216	`B8:BA:66:00:00:00`
`BC:83:85`	MA-L	24 bit	16,777,216	`BC:83:85:00:00:00`
`C0:D6:D5`	MA-L	24 bit	16,777,216	`C0:D6:D5:00:00:00`
`C4:61:C7`	MA-L	24 bit	16,777,216	`C4:61:C7:00:00:00`
`C4:9D:ED`	MA-L	24 bit	16,777,216	`C4:9D:ED:00:00:00`
`C4:CB:76`	MA-L	24 bit	16,777,216	`C4:CB:76:00:00:00`
`C8:3F:26`	MA-L	24 bit	16,777,216	`C8:3F:26:00:00:00`
`C8:96:65`	MA-L	24 bit	16,777,216	`C8:96:65:00:00:00`
`CC:0D:CB`	MA-L	24 bit	16,777,216	`CC:0D:CB:00:00:00`
`CC:60:C8`	MA-L	24 bit	16,777,216	`CC:60:C8:00:00:00`
`CC:76:45`	MA-L	24 bit	16,777,216	`CC:76:45:00:00:00`
`CC:B0:B3`	MA-L	24 bit	16,777,216	`CC:B0:B3:00:00:00`
`D0:92:9E`	MA-L	24 bit	16,777,216	`D0:92:9E:00:00:00`
`D4:8F:33`	MA-L	24 bit	16,777,216	`D4:8F:33:00:00:00`
`D8:E2:DF`	MA-L	24 bit	16,777,216	`D8:E2:DF:00:00:00`
`DC:98:40`	MA-L	24 bit	16,777,216	`DC:98:40:00:00:00`
`E4:2A:AC`	MA-L	24 bit	16,777,216	`E4:2A:AC:00:00:00`
`E4:FA:DE`	MA-L	24 bit	16,777,216	`E4:FA:DE:00:00:00`
`E4:FB:1E`	MA-L	24 bit	16,777,216	`E4:FB:1E:00:00:00`
`E8:A7:2F`	MA-L	24 bit	16,777,216	`E8:A7:2F:00:00:00`
`E8:F6:73`	MA-L	24 bit	16,777,216	`E8:F6:73:00:00:00`
`EC:46:84`	MA-L	24 bit	16,777,216	`EC:46:84:00:00:00`
`EC:59:E7`	MA-L	24 bit	16,777,216	`EC:59:E7:00:00:00`
`EC:83:50`	MA-L	24 bit	16,777,216	`EC:83:50:00:00:00`
`F0:1D:BC`	MA-L	24 bit	16,777,216	`F0:1D:BC:00:00:00`
`F0:6E:0B`	MA-L	24 bit	16,777,216	`F0:6E:0B:00:00:00`
`F4:6A:D7`	MA-L	24 bit	16,777,216	`F4:6A:D7:00:00:00`
`FC:8C:11`	MA-L	24 bit	16,777,216	`FC:8C:11:00:00:00`

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