NETGEAR 有多少个 MAC 地址前缀（OUI）？

根据 IEEE 官方注册库，NETGEAR 共注册了 76 个 OUI / MAC 地址前缀，例如 00:09:5B、00:0F:B5、00:14:6C 等。

如何判断一个 MAC 地址是否属于 NETGEAR？

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

NETGEAR

该厂商在 IEEE 注册的 OUI / MAC 地址前缀清单，共 76 个。

OUI 前缀总数

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 76 个

OUI 前缀	注册类型	前缀位长	地址容量	示例 MAC
`00:09:5B`	MA-L	24 bit	16,777,216	`00:09:5B:00:00:00`
`00:0F:B5`	MA-L	24 bit	16,777,216	`00:0F:B5:00:00:00`
`00:14:6C`	MA-L	24 bit	16,777,216	`00:14:6C:00:00:00`
`00:18:4D`	MA-L	24 bit	16,777,216	`00:18:4D:00:00:00`
`00:1B:2F`	MA-L	24 bit	16,777,216	`00:1B:2F:00:00:00`
`00:1E:2A`	MA-L	24 bit	16,777,216	`00:1E:2A:00:00:00`
`00:1F:33`	MA-L	24 bit	16,777,216	`00:1F:33:00:00:00`
`00:22:3F`	MA-L	24 bit	16,777,216	`00:22:3F:00:00:00`
`00:24:B2`	MA-L	24 bit	16,777,216	`00:24:B2:00:00:00`
`00:26:F2`	MA-L	24 bit	16,777,216	`00:26:F2:00:00:00`
`00:8E:F2`	MA-L	24 bit	16,777,216	`00:8E:F2:00:00:00`
`04:A1:51`	MA-L	24 bit	16,777,216	`04:A1:51:00:00:00`
`08:02:8E`	MA-L	24 bit	16,777,216	`08:02:8E:00:00:00`
`08:36:C9`	MA-L	24 bit	16,777,216	`08:36:C9:00:00:00`
`08:BD:43`	MA-L	24 bit	16,777,216	`08:BD:43:00:00:00`
`10:0C:6B`	MA-L	24 bit	16,777,216	`10:0C:6B:00:00:00`
`10:0D:7F`	MA-L	24 bit	16,777,216	`10:0D:7F:00:00:00`
`10:DA:43`	MA-L	24 bit	16,777,216	`10:DA:43:00:00:00`
`14:59:C0`	MA-L	24 bit	16,777,216	`14:59:C0:00:00:00`
`20:0C:C8`	MA-L	24 bit	16,777,216	`20:0C:C8:00:00:00`
`20:4E:7F`	MA-L	24 bit	16,777,216	`20:4E:7F:00:00:00`
`20:E5:2A`	MA-L	24 bit	16,777,216	`20:E5:2A:00:00:00`
`28:80:88`	MA-L	24 bit	16,777,216	`28:80:88:00:00:00`
`28:94:01`	MA-L	24 bit	16,777,216	`28:94:01:00:00:00`
`28:C6:8E`	MA-L	24 bit	16,777,216	`28:C6:8E:00:00:00`
`2C:30:33`	MA-L	24 bit	16,777,216	`2C:30:33:00:00:00`
`2C:B0:5D`	MA-L	24 bit	16,777,216	`2C:B0:5D:00:00:00`
`30:46:9A`	MA-L	24 bit	16,777,216	`30:46:9A:00:00:00`
`34:98:B5`	MA-L	24 bit	16,777,216	`34:98:B5:00:00:00`
`38:94:ED`	MA-L	24 bit	16,777,216	`38:94:ED:00:00:00`
`3C:37:86`	MA-L	24 bit	16,777,216	`3C:37:86:00:00:00`
`40:5D:82`	MA-L	24 bit	16,777,216	`40:5D:82:00:00:00`
`44:94:FC`	MA-L	24 bit	16,777,216	`44:94:FC:00:00:00`
`44:A5:6E`	MA-L	24 bit	16,777,216	`44:A5:6E:00:00:00`
`4C:60:DE`	MA-L	24 bit	16,777,216	`4C:60:DE:00:00:00`
`50:4A:6E`	MA-L	24 bit	16,777,216	`50:4A:6E:00:00:00`
`50:6A:03`	MA-L	24 bit	16,777,216	`50:6A:03:00:00:00`
`54:07:7D`	MA-L	24 bit	16,777,216	`54:07:7D:00:00:00`
`6C:B0:CE`	MA-L	24 bit	16,777,216	`6C:B0:CE:00:00:00`
`6C:CD:D6`	MA-L	24 bit	16,777,216	`6C:CD:D6:00:00:00`
`74:44:01`	MA-L	24 bit	16,777,216	`74:44:01:00:00:00`
`78:D2:94`	MA-L	24 bit	16,777,216	`78:D2:94:00:00:00`
`80:37:73`	MA-L	24 bit	16,777,216	`80:37:73:00:00:00`
`80:CC:9C`	MA-L	24 bit	16,777,216	`80:CC:9C:00:00:00`
`84:1B:5E`	MA-L	24 bit	16,777,216	`84:1B:5E:00:00:00`
`8C:3B:AD`	MA-L	24 bit	16,777,216	`8C:3B:AD:00:00:00`
`94:18:65`	MA-L	24 bit	16,777,216	`94:18:65:00:00:00`
`94:3B:22`	MA-L	24 bit	16,777,216	`94:3B:22:00:00:00`
`94:A6:7E`	MA-L	24 bit	16,777,216	`94:A6:7E:00:00:00`
`9C:3D:CF`	MA-L	24 bit	16,777,216	`9C:3D:CF:00:00:00`
`9C:C9:EB`	MA-L	24 bit	16,777,216	`9C:C9:EB:00:00:00`
`9C:D3:6D`	MA-L	24 bit	16,777,216	`9C:D3:6D:00:00:00`
`A0:04:60`	MA-L	24 bit	16,777,216	`A0:04:60:00:00:00`
`A0:21:B7`	MA-L	24 bit	16,777,216	`A0:21:B7:00:00:00`
`A0:40:A0`	MA-L	24 bit	16,777,216	`A0:40:A0:00:00:00`
`A0:63:91`	MA-L	24 bit	16,777,216	`A0:63:91:00:00:00`
`A4:2B:8C`	MA-L	24 bit	16,777,216	`A4:2B:8C:00:00:00`
`B0:39:56`	MA-L	24 bit	16,777,216	`B0:39:56:00:00:00`
`B0:7F:B9`	MA-L	24 bit	16,777,216	`B0:7F:B9:00:00:00`
`B0:B9:8A`	MA-L	24 bit	16,777,216	`B0:B9:8A:00:00:00`
`BC:A5:11`	MA-L	24 bit	16,777,216	`BC:A5:11:00:00:00`
`C0:3F:0E`	MA-L	24 bit	16,777,216	`C0:3F:0E:00:00:00`
`C0:FF:D4`	MA-L	24 bit	16,777,216	`C0:FF:D4:00:00:00`
`C4:04:15`	MA-L	24 bit	16,777,216	`C4:04:15:00:00:00`
`C4:3D:C7`	MA-L	24 bit	16,777,216	`C4:3D:C7:00:00:00`
`C8:10:2F`	MA-L	24 bit	16,777,216	`C8:10:2F:00:00:00`
`C8:9E:43`	MA-L	24 bit	16,777,216	`C8:9E:43:00:00:00`
`CC:40:D0`	MA-L	24 bit	16,777,216	`CC:40:D0:00:00:00`
`DC:EF:09`	MA-L	24 bit	16,777,216	`DC:EF:09:00:00:00`
`E0:46:9A`	MA-L	24 bit	16,777,216	`E0:46:9A:00:00:00`
`E0:46:EE`	MA-L	24 bit	16,777,216	`E0:46:EE:00:00:00`
`E0:91:F5`	MA-L	24 bit	16,777,216	`E0:91:F5:00:00:00`
`E0:C2:50`	MA-L	24 bit	16,777,216	`E0:C2:50:00:00:00`
`E4:F4:C6`	MA-L	24 bit	16,777,216	`E4:F4:C6:00:00:00`
`E8:FC:AF`	MA-L	24 bit	16,777,216	`E8:FC:AF:00:00:00`
`F8:73:94`	MA-L	24 bit	16,777,216	`F8:73:94:00:00:00`

关于 NETGEAR 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 NETGEAR 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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