Vantiva USA LLC 有多少个 MAC 地址前缀（OUI）？

根据 IEEE 官方注册库，Vantiva USA LLC 共注册了 97 个 OUI / MAC 地址前缀，例如 00:CB:7A、08:7E:64、08:95:2A 等。

如何判断一个 MAC 地址是否属于 Vantiva USA LLC？

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

Vantiva USA LLC

该厂商在 IEEE 注册的 OUI / MAC 地址前缀清单，共 97 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 97 个

OUI 前缀	注册类型	前缀位长	地址容量	示例 MAC
`00:CB:7A`	MA-L	24 bit	16,777,216	`00:CB:7A:00:00:00`
`08:7E:64`	MA-L	24 bit	16,777,216	`08:7E:64:00:00:00`
`08:95:2A`	MA-L	24 bit	16,777,216	`08:95:2A:00:00:00`
`08:A7:C0`	MA-L	24 bit	16,777,216	`08:A7:C0:00:00:00`
`0C:02:27`	MA-L	24 bit	16,777,216	`0C:02:27:00:00:00`
`0C:FE:7B`	MA-L	24 bit	16,777,216	`0C:FE:7B:00:00:00`
`10:33:BF`	MA-L	24 bit	16,777,216	`10:33:BF:00:00:00`
`10:62:D0`	MA-L	24 bit	16,777,216	`10:62:D0:00:00:00`
`10:A7:93`	MA-L	24 bit	16,777,216	`10:A7:93:00:00:00`
`10:C2:5A`	MA-L	24 bit	16,777,216	`10:C2:5A:00:00:00`
`14:98:7D`	MA-L	24 bit	16,777,216	`14:98:7D:00:00:00`
`14:B7:F8`	MA-L	24 bit	16,777,216	`14:B7:F8:00:00:00`
`1C:9D:72`	MA-L	24 bit	16,777,216	`1C:9D:72:00:00:00`
`1C:9E:CC`	MA-L	24 bit	16,777,216	`1C:9E:CC:00:00:00`
`28:BE:9B`	MA-L	24 bit	16,777,216	`28:BE:9B:00:00:00`
`38:17:E1`	MA-L	24 bit	16,777,216	`38:17:E1:00:00:00`
`38:3F:B3`	MA-L	24 bit	16,777,216	`38:3F:B3:00:00:00`
`3C:82:C0`	MA-L	24 bit	16,777,216	`3C:82:C0:00:00:00`
`3C:9A:77`	MA-L	24 bit	16,777,216	`3C:9A:77:00:00:00`
`3C:B7:4B`	MA-L	24 bit	16,777,216	`3C:B7:4B:00:00:00`
`40:0F:C1`	MA-L	24 bit	16,777,216	`40:0F:C1:00:00:00`
`40:75:C3`	MA-L	24 bit	16,777,216	`40:75:C3:00:00:00`
`44:1C:12`	MA-L	24 bit	16,777,216	`44:1C:12:00:00:00`
`44:32:C8`	MA-L	24 bit	16,777,216	`44:32:C8:00:00:00`
`48:00:33`	MA-L	24 bit	16,777,216	`48:00:33:00:00:00`
`48:1B:40`	MA-L	24 bit	16,777,216	`48:1B:40:00:00:00`
`48:4B:D4`	MA-L	24 bit	16,777,216	`48:4B:D4:00:00:00`
`48:BD:CE`	MA-L	24 bit	16,777,216	`48:BD:CE:00:00:00`
`48:F7:C0`	MA-L	24 bit	16,777,216	`48:F7:C0:00:00:00`
`4C:D7:4A`	MA-L	24 bit	16,777,216	`4C:D7:4A:00:00:00`
`50:09:59`	MA-L	24 bit	16,777,216	`50:09:59:00:00:00`
`50:BB:9F`	MA-L	24 bit	16,777,216	`50:BB:9F:00:00:00`
`54:A6:5C`	MA-L	24 bit	16,777,216	`54:A6:5C:00:00:00`
`58:23:8C`	MA-L	24 bit	16,777,216	`58:23:8C:00:00:00`
`58:96:30`	MA-L	24 bit	16,777,216	`58:96:30:00:00:00`
`5C:22:DA`	MA-L	24 bit	16,777,216	`5C:22:DA:00:00:00`
`5C:76:95`	MA-L	24 bit	16,777,216	`5C:76:95:00:00:00`
`5C:7D:7D`	MA-L	24 bit	16,777,216	`5C:7D:7D:00:00:00`
`60:3D:26`	MA-L	24 bit	16,777,216	`60:3D:26:00:00:00`
`64:12:36`	MA-L	24 bit	16,777,216	`64:12:36:00:00:00`
`64:1B:85`	MA-L	24 bit	16,777,216	`64:1B:85:00:00:00`
`6C:55:E8`	MA-L	24 bit	16,777,216	`6C:55:E8:00:00:00`
`70:03:7E`	MA-L	24 bit	16,777,216	`70:03:7E:00:00:00`
`70:5A:9E`	MA-L	24 bit	16,777,216	`70:5A:9E:00:00:00`
`7C:9A:54`	MA-L	24 bit	16,777,216	`7C:9A:54:00:00:00`
`80:29:94`	MA-L	24 bit	16,777,216	`80:29:94:00:00:00`
`80:B2:34`	MA-L	24 bit	16,777,216	`80:B2:34:00:00:00`
`80:C6:AB`	MA-L	24 bit	16,777,216	`80:C6:AB:00:00:00`
`80:D0:4A`	MA-L	24 bit	16,777,216	`80:D0:4A:00:00:00`
`80:DA:C2`	MA-L	24 bit	16,777,216	`80:DA:C2:00:00:00`
`84:17:EF`	MA-L	24 bit	16,777,216	`84:17:EF:00:00:00`
`88:9E:68`	MA-L	24 bit	16,777,216	`88:9E:68:00:00:00`
`88:F7:C7`	MA-L	24 bit	16,777,216	`88:F7:C7:00:00:00`
`8C:04:FF`	MA-L	24 bit	16,777,216	`8C:04:FF:00:00:00`
`8C:5C:20`	MA-L	24 bit	16,777,216	`8C:5C:20:00:00:00`
`8C:6A:8D`	MA-L	24 bit	16,777,216	`8C:6A:8D:00:00:00`
`90:58:51`	MA-L	24 bit	16,777,216	`90:58:51:00:00:00`
`94:04:E3`	MA-L	24 bit	16,777,216	`94:04:E3:00:00:00`
`94:6A:77`	MA-L	24 bit	16,777,216	`94:6A:77:00:00:00`
`98:52:4A`	MA-L	24 bit	16,777,216	`98:52:4A:00:00:00`
`98:9D:5D`	MA-L	24 bit	16,777,216	`98:9D:5D:00:00:00`
`A0:FF:70`	MA-L	24 bit	16,777,216	`A0:FF:70:00:00:00`
`A4:56:CC`	MA-L	24 bit	16,777,216	`A4:56:CC:00:00:00`
`AC:4C:A5`	MA-L	24 bit	16,777,216	`AC:4C:A5:00:00:00`
`AC:62:FF`	MA-L	24 bit	16,777,216	`AC:62:FF:00:00:00`
`B0:C2:87`	MA-L	24 bit	16,777,216	`B0:C2:87:00:00:00`
`B4:2A:0E`	MA-L	24 bit	16,777,216	`B4:2A:0E:00:00:00`
`B8:5E:71`	MA-L	24 bit	16,777,216	`B8:5E:71:00:00:00`
`B8:A5:35`	MA-L	24 bit	16,777,216	`B8:A5:35:00:00:00`
`BC:9B:68`	MA-L	24 bit	16,777,216	`BC:9B:68:00:00:00`
`C4:27:95`	MA-L	24 bit	16,777,216	`C4:27:95:00:00:00`
`CC:03:FA`	MA-L	24 bit	16,777,216	`CC:03:FA:00:00:00`
`CC:35:40`	MA-L	24 bit	16,777,216	`CC:35:40:00:00:00`
`CC:F3:C8`	MA-L	24 bit	16,777,216	`CC:F3:C8:00:00:00`
`D0:5A:00`	MA-L	24 bit	16,777,216	`D0:5A:00:00:00:00`
`D0:8A:91`	MA-L	24 bit	16,777,216	`D0:8A:91:00:00:00`
`D0:B2:C4`	MA-L	24 bit	16,777,216	`D0:B2:C4:00:00:00`
`D4:B9:2F`	MA-L	24 bit	16,777,216	`D4:B9:2F:00:00:00`
`D4:E2:CB`	MA-L	24 bit	16,777,216	`D4:E2:CB:00:00:00`
`DC:EB:69`	MA-L	24 bit	16,777,216	`DC:EB:69:00:00:00`
`E0:37:17`	MA-L	24 bit	16,777,216	`E0:37:17:00:00:00`
`E0:88:5D`	MA-L	24 bit	16,777,216	`E0:88:5D:00:00:00`
`E0:DB:D1`	MA-L	24 bit	16,777,216	`E0:DB:D1:00:00:00`
`E4:BF:FA`	MA-L	24 bit	16,777,216	`E4:BF:FA:00:00:00`
`E8:CD:15`	MA-L	24 bit	16,777,216	`E8:CD:15:00:00:00`
`EC:93:7D`	MA-L	24 bit	16,777,216	`EC:93:7D:00:00:00`
`EC:A8:1F`	MA-L	24 bit	16,777,216	`EC:A8:1F:00:00:00`
`F0:4B:8A`	MA-L	24 bit	16,777,216	`F0:4B:8A:00:00:00`
`F4:C1:14`	MA-L	24 bit	16,777,216	`F4:C1:14:00:00:00`
`F8:20:D2`	MA-L	24 bit	16,777,216	`F8:20:D2:00:00:00`
`F8:3B:1D`	MA-L	24 bit	16,777,216	`F8:3B:1D:00:00:00`
`F8:5E:42`	MA-L	24 bit	16,777,216	`F8:5E:42:00:00:00`
`F8:D0:0E`	MA-L	24 bit	16,777,216	`F8:D0:0E:00:00:00`
`F8:D2:AC`	MA-L	24 bit	16,777,216	`F8:D2:AC:00:00:00`
`FC:52:8D`	MA-L	24 bit	16,777,216	`FC:52:8D:00:00:00`
`FC:91:14`	MA-L	24 bit	16,777,216	`FC:91:14:00:00:00`
`FC:94:E3`	MA-L	24 bit	16,777,216	`FC:94:E3:00:00:00`

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