# apphelp tool profile
name: MAC Address Lookup
tool: tool-macaddress
domain: macaddress.apphelp.net
canonical: https://macaddress.apphelp.net/en
summary: MAC address vendor lookup (IEEE MA-L/MA-M/MA-S via Wireshark manuf) and format converter (colon, hyphen, Cisco dot, plain), unicast/multicast and global/local bits, EUI-64 and IPv6 link-local, batch mode.
inputs: One MAC/OUI or a list of up to 2000, any notation.
outputs: Vendor, flags, all formats; converted list for batch.
use-cases: identify devices in ARP/DHCP tables; Cisco format conversion; spot randomised MACs
keywords: mac address lookup, oui lookup, mac format converter, MAC 地址查询
languages: en, zh-CN, zh-TW, ar, de, fr
seo: locale-routed, canonical, hreflang, sitemap, robots, JSON-LD
geo: llm.txt profile, concise task summary, input/output contract, use-case list, local-first privacy notes
privacy: browser-local processing, no upload by default
limits: Vendor table (~1.5 MB) is fetched once from this site and matched locally.
related: https://subnetcalculator.apphelp.net/en ; https://portlookup.apphelp.net/en ; https://dnslookup.apphelp.net/en
analytics: Microsoft Clarity and Google Analytics (opt-in)
no-login: true