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MAC OUI hint

Identify NIC vendor prefix from MAC.

Client
OUI: 00:1A:2B · lookup vendor at IEEE OUI registry (not queried here)

Nearby workflows on Toolcore

  • MAC / EUI formatter — Normalize IEEE EUI-48 or EUI-64: colon, hyphen, dotted (Cisco-style), plain hex—and show multicast / local-admin bits—in your browser only. when another identifier column uses a different checksum ruleset.
  • MAC address generator — Generate random EUI-48 MAC addresses—colon, hyphen, dotted, or plain hex—CSPRNG locally. when another identifier column uses a different checksum ruleset.
  • IPv4 subnet table — Split a parent IPv4 CIDR into equal child prefixes: every subnet listed with network, broadcast, and host bounds—capped list, local only. when another identifier column uses a different checksum ruleset.
  • Luhn checksum (mod 10) — Paste a digit string (spaces ignored)—pass or fail Luhn for PANs, IMEI-style IDs, and test vectors; browser-only. when another identifier column uses a different checksum ruleset.

Common use cases

  • MAC OUI hint for quick local checks without uploading data.
  • Copy results into tickets, docs, or classroom notes.

Common mistakes to avoid

  • Unexpected input shape

    See the intro and how-to notes for accepted formats.

FAQ

Is processing local?

Yes—this runs entirely in your browser.

Agent prefill?

Use q or qb for the main text field when supported.

More tools

Related utilities you can open in another tab—mostly client-side.