Google, Inc. 有多少个 MAC 地址前缀（OUI）？

根据 IEEE 官方注册库，Google, Inc. 共注册了 104 个 OUI / MAC 地址前缀，例如 00:1A:11、00:F6:20、04:00:6E 等。

如何判断一个 MAC 地址是否属于 Google, Inc.？

取 MAC 地址的前缀（前 6~9 位十六进制）与本页列出的 Google, Inc. 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。

Google, Inc.

该厂商在 IEEE 注册的 OUI / MAC 地址前缀清单，共 104 个。

104

OUI 前缀总数

104

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 104 个

OUI 前缀	注册类型	前缀位长	地址容量	示例 MAC
`00:1A:11`	MA-L	24 bit	16,777,216	`00:1A:11:00:00:00`
`00:F6:20`	MA-L	24 bit	16,777,216	`00:F6:20:00:00:00`
`04:00:6E`	MA-L	24 bit	16,777,216	`04:00:6E:00:00:00`
`04:C8:B0`	MA-L	24 bit	16,777,216	`04:C8:B0:00:00:00`
`08:8B:C8`	MA-L	24 bit	16,777,216	`08:8B:C8:00:00:00`
`08:9E:08`	MA-L	24 bit	16,777,216	`08:9E:08:00:00:00`
`08:B4:B1`	MA-L	24 bit	16,777,216	`08:B4:B1:00:00:00`
`0C:C4:13`	MA-L	24 bit	16,777,216	`0C:C4:13:00:00:00`
`10:D9:A2`	MA-L	24 bit	16,777,216	`10:D9:A2:00:00:00`
`14:22:3B`	MA-L	24 bit	16,777,216	`14:22:3B:00:00:00`
`14:C1:4E`	MA-L	24 bit	16,777,216	`14:C1:4E:00:00:00`
`1C:53:F9`	MA-L	24 bit	16,777,216	`1C:53:F9:00:00:00`
`1C:F2:9A`	MA-L	24 bit	16,777,216	`1C:F2:9A:00:00:00`
`20:1F:3B`	MA-L	24 bit	16,777,216	`20:1F:3B:00:00:00`
`20:33:89`	MA-L	24 bit	16,777,216	`20:33:89:00:00:00`
`20:DF:B9`	MA-L	24 bit	16,777,216	`20:DF:B9:00:00:00`
`20:F0:94`	MA-L	24 bit	16,777,216	`20:F0:94:00:00:00`
`24:05:88`	MA-L	24 bit	16,777,216	`24:05:88:00:00:00`
`24:29:34`	MA-L	24 bit	16,777,216	`24:29:34:00:00:00`
`24:95:2F`	MA-L	24 bit	16,777,216	`24:95:2F:00:00:00`
`24:E5:0F`	MA-L	24 bit	16,777,216	`24:E5:0F:00:00:00`
`28:BD:89`	MA-L	24 bit	16,777,216	`28:BD:89:00:00:00`
`30:E0:44`	MA-L	24 bit	16,777,216	`30:E0:44:00:00:00`
`30:FD:38`	MA-L	24 bit	16,777,216	`30:FD:38:00:00:00`
`34:39:16`	MA-L	24 bit	16,777,216	`34:39:16:00:00:00`
`34:C7:E9`	MA-L	24 bit	16,777,216	`34:C7:E9:00:00:00`
`34:DD:CC`	MA-L	24 bit	16,777,216	`34:DD:CC:00:00:00`
`38:86:F7`	MA-L	24 bit	16,777,216	`38:86:F7:00:00:00`
`38:8B:59`	MA-L	24 bit	16,777,216	`38:8B:59:00:00:00`
`3C:28:6D`	MA-L	24 bit	16,777,216	`3C:28:6D:00:00:00`
`3C:31:74`	MA-L	24 bit	16,777,216	`3C:31:74:00:00:00`
`3C:5A:B4`	MA-L	24 bit	16,777,216	`3C:5A:B4:00:00:00`
`3C:8D:20`	MA-L	24 bit	16,777,216	`3C:8D:20:00:00:00`
`40:A4:4A`	MA-L	24 bit	16,777,216	`40:A4:4A:00:00:00`
`44:07:0B`	MA-L	24 bit	16,777,216	`44:07:0B:00:00:00`
`44:10:30`	MA-L	24 bit	16,777,216	`44:10:30:00:00:00`
`44:BB:3B`	MA-L	24 bit	16,777,216	`44:BB:3B:00:00:00`
`48:D6:D5`	MA-L	24 bit	16,777,216	`48:D6:D5:00:00:00`
`54:60:09`	MA-L	24 bit	16,777,216	`54:60:09:00:00:00`
`54:67:49`	MA-L	24 bit	16,777,216	`54:67:49:00:00:00`
`58:24:29`	MA-L	24 bit	16,777,216	`58:24:29:00:00:00`
`58:CB:52`	MA-L	24 bit	16,777,216	`58:CB:52:00:00:00`
`5C:33:7B`	MA-L	24 bit	16,777,216	`5C:33:7B:00:00:00`
`60:70:6C`	MA-L	24 bit	16,777,216	`60:70:6C:00:00:00`
`60:B7:6E`	MA-L	24 bit	16,777,216	`60:B7:6E:00:00:00`
`64:9D:38`	MA-L	24 bit	16,777,216	`64:9D:38:00:00:00`
`70:28:7D`	MA-L	24 bit	16,777,216	`70:28:7D:00:00:00`
`70:3A:CB`	MA-L	24 bit	16,777,216	`70:3A:CB:00:00:00`
`74:74:46`	MA-L	24 bit	16,777,216	`74:74:46:00:00:00`
`7C:2E:BD`	MA-L	24 bit	16,777,216	`7C:2E:BD:00:00:00`
`7C:D9:5C`	MA-L	24 bit	16,777,216	`7C:D9:5C:00:00:00`
`84:A8:24`	MA-L	24 bit	16,777,216	`84:A8:24:00:00:00`
`88:3D:24`	MA-L	24 bit	16,777,216	`88:3D:24:00:00:00`
`88:54:1F`	MA-L	24 bit	16,777,216	`88:54:1F:00:00:00`
`88:C3:44`	MA-L	24 bit	16,777,216	`88:C3:44:00:00:00`
`90:0C:C8`	MA-L	24 bit	16,777,216	`90:0C:C8:00:00:00`
`90:CA:FA`	MA-L	24 bit	16,777,216	`90:CA:FA:00:00:00`
`94:45:60`	MA-L	24 bit	16,777,216	`94:45:60:00:00:00`
`94:95:A0`	MA-L	24 bit	16,777,216	`94:95:A0:00:00:00`
`94:EB:2C`	MA-L	24 bit	16,777,216	`94:EB:2C:00:00:00`
`98:3A:1F`	MA-L	24 bit	16,777,216	`98:3A:1F:00:00:00`
`98:98:FB`	MA-L	24 bit	16,777,216	`98:98:FB:00:00:00`
`98:D2:93`	MA-L	24 bit	16,777,216	`98:D2:93:00:00:00`
`9C:4F:5F`	MA-L	24 bit	16,777,216	`9C:4F:5F:00:00:00`
`A4:77:33`	MA-L	24 bit	16,777,216	`A4:77:33:00:00:00`
`AC:3E:B1`	MA-L	24 bit	16,777,216	`AC:3E:B1:00:00:00`
`AC:67:84`	MA-L	24 bit	16,777,216	`AC:67:84:00:00:00`
`AC:E6:BB`	MA-L	24 bit	16,777,216	`AC:E6:BB:00:00:00`
`B0:2A:43`	MA-L	24 bit	16,777,216	`B0:2A:43:00:00:00`
`B0:6A:41`	MA-L	24 bit	16,777,216	`B0:6A:41:00:00:00`
`B0:9C:B2`	MA-L	24 bit	16,777,216	`B0:9C:B2:00:00:00`
`B0:D5:FB`	MA-L	24 bit	16,777,216	`B0:D5:FB:00:00:00`
`B0:E4:D5`	MA-L	24 bit	16,777,216	`B0:E4:D5:00:00:00`
`B4:13:24`	MA-L	24 bit	16,777,216	`B4:13:24:00:00:00`
`B4:23:A2`	MA-L	24 bit	16,777,216	`B4:23:A2:00:00:00`
`B8:7B:D4`	MA-L	24 bit	16,777,216	`B8:7B:D4:00:00:00`
`B8:DB:38`	MA-L	24 bit	16,777,216	`B8:DB:38:00:00:00`
`B8:F4:A4`	MA-L	24 bit	16,777,216	`B8:F4:A4:00:00:00`
`BC:DF:58`	MA-L	24 bit	16,777,216	`BC:DF:58:00:00:00`
`C0:1C:6A`	MA-L	24 bit	16,777,216	`C0:1C:6A:00:00:00`
`C8:2A:DD`	MA-L	24 bit	16,777,216	`C8:2A:DD:00:00:00`
`CC:A7:C1`	MA-L	24 bit	16,777,216	`CC:A7:C1:00:00:00`
`CC:F4:11`	MA-L	24 bit	16,777,216	`CC:F4:11:00:00:00`
`D4:3A:2C`	MA-L	24 bit	16,777,216	`D4:3A:2C:00:00:00`
`D4:F5:47`	MA-L	24 bit	16,777,216	`D4:F5:47:00:00:00`
`D8:6C:63`	MA-L	24 bit	16,777,216	`D8:6C:63:00:00:00`
`D8:8C:79`	MA-L	24 bit	16,777,216	`D8:8C:79:00:00:00`
`D8:EB:46`	MA-L	24 bit	16,777,216	`D8:EB:46:00:00:00`
`DC:E5:5B`	MA-L	24 bit	16,777,216	`DC:E5:5B:00:00:00`
`E0:1A:DF`	MA-L	24 bit	16,777,216	`E0:1A:DF:00:00:00`
`E4:5E:1B`	MA-L	24 bit	16,777,216	`E4:5E:1B:00:00:00`
`E4:F0:42`	MA-L	24 bit	16,777,216	`E4:F0:42:00:00:00`
`E8:D5:2B`	MA-L	24 bit	16,777,216	`E8:D5:2B:00:00:00`
`F0:5C:77`	MA-L	24 bit	16,777,216	`F0:5C:77:00:00:00`
`F0:72:EA`	MA-L	24 bit	16,777,216	`F0:72:EA:00:00:00`
`F0:EF:86`	MA-L	24 bit	16,777,216	`F0:EF:86:00:00:00`
`F4:03:04`	MA-L	24 bit	16,777,216	`F4:03:04:00:00:00`
`F4:F5:D8`	MA-L	24 bit	16,777,216	`F4:F5:D8:00:00:00`
`F4:F5:E8`	MA-L	24 bit	16,777,216	`F4:F5:E8:00:00:00`
`F8:0F:F9`	MA-L	24 bit	16,777,216	`F8:0F:F9:00:00:00`
`F8:1A:2B`	MA-L	24 bit	16,777,216	`F8:1A:2B:00:00:00`
`F8:8F:CA`	MA-L	24 bit	16,777,216	`F8:8F:CA:00:00:00`
`FC:41:16`	MA-L	24 bit	16,777,216	`FC:41:16:00:00:00`
`FC:91:5D`	MA-L	24 bit	16,777,216	`FC:91:5D:00:00:00`

关于 Google, Inc. 的 OUI

OUI（Organizationally Unique Identifier）是 IEEE 分配给设备制造商的地址前缀。一个 MAC 地址若以上表中的任一前缀开头，通常即由 Google, Inc. 生产或贴牌。

注册类型决定前缀长度与可用地址数：MA-L 占 24 位（约 1678 万个地址）、MA-M 占 28 位、MA-S 占 36 位（4096 个地址）。判断归属时应按最长前缀优先匹配。

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