What does MAC Vendor Lookup do that other Network pages on this site do not?

One MAC per line. Built-in common OUIs (Intel/VMware/Apple, …); unknown if missing. Offline table. Short version: Batch MAC → vendor from a local OUI table.

Does MAC Vendor Lookup upload my file or text to Tool-You servers?

No. MAC Vendor Lookup runs in this browser tab. Files stay on the device. Limit note: One MAC per line; at least 3-octet OUI. Local table; unknown if missing.

Should I use MAC Normalize instead of MAC Vendor Lookup?

Use MAC Vendor Lookup when you need Batch MAC → vendor from a local OUI table. Use MAC Normalize when you need Normalize a MAC address to colon, dash, Cisco, or bare. They share a category (Network) but not the same job.

What are the limits of MAC Vendor Lookup?

One MAC per line; at least 3-octet OUI. Local table; unknown if missing. Also: One MAC per line. Built-in common OUIs (Intel/VMware/Apple, …); unknown if missing. Offline table.

MAC Vendor Lookup

Batch MAC → vendor from a local OUI table.

One MAC per line. Built-in common OUIs (Intel/VMware/Apple, …); unknown if missing. Offline table.

What MAC Vendor Lookup does

One MAC per line. Built-in common OUIs (Intel/VMware/Apple, …); unknown if missing. Offline table.

MAC Vendor Lookup sits in the Network group on purpose. It is not MAC Normalize (Normalize a MAC address to colon, dash, Cisco, or bare.) and not Is IPv4 (Validate a dotted IPv4 address.). Choose this page when you need Batch MAC → vendor from a local OUI table. If you stretch MAC Vendor Lookup into a neighbor’s job, the result will look wrong even though the site chrome looks the same.

How to use MAC Vendor Lookup

Keep this tab on MAC Vendor Lookup (/network/mac-vendor). Pasting into the wrong Network tool (for example MAC Normalize) changes the job.
Paste or type the input MAC Vendor Lookup expects. Path hint: network · mac vendor. Batch MAC → vendor from a local OUI table.
Apply the MAC Vendor Lookup action only. Is IPv4 is a different transform (Validate a dotted IPv4 address.). One MAC per line. Built-in common OUIs (Intel/VMware/Apple, …); unknown if missing. Offline table.
Copy the output of MAC Vendor Lookup if you need it elsewhere. Size/complexity still follows: One MAC per line; at least 3-octet OUI. Local table; unknown if missing.
If the text job is actually Normalize a MAC address to colon, dash, Cisco, or bare., leave MAC Vendor Lookup and open MAC Normalize.

When not to use MAC Vendor Lookup

Skip MAC Vendor Lookup when a neighbor tool matches better — start with MAC Normalize or Is IPv4 — or when the description already warns the job will fail. In the tool’s own words: One MAC per line. Built-in common OUIs (Intel/VMware/Apple, …); unknown if missing. Offline table.

Questions about MAC Vendor Lookup

What does MAC Vendor Lookup do that other Network pages on this site do not?: One MAC per line. Built-in common OUIs (Intel/VMware/Apple, …); unknown if missing. Offline table. Short version: Batch MAC → vendor from a local OUI table.
Does MAC Vendor Lookup upload my file or text to Tool-You servers?: No. MAC Vendor Lookup runs in this browser tab. Files stay on the device. Limit note: One MAC per line; at least 3-octet OUI. Local table; unknown if missing.
Should I use MAC Normalize instead of MAC Vendor Lookup?: Use MAC Vendor Lookup when you need Batch MAC → vendor from a local OUI table. Use MAC Normalize when you need Normalize a MAC address to colon, dash, Cisco, or bare. They share a category (Network) but not the same job.
What are the limits of MAC Vendor Lookup?: One MAC per line; at least 3-octet OUI. Local table; unknown if missing. Also: One MAC per line. Built-in common OUIs (Intel/VMware/Apple, …); unknown if missing. Offline table.