EtherType Lookup

Enter an EtherType in hex or decimal to find its protocol name.

How to use

  1. Enter your values in the fields above.
  2. Press Calculate to see your result instantly.
  3. Use the Share button to copy a link to your result.

About this calculator

Every Ethernet II frame carries a 16-bit EtherType field right after the source MAC address, telling the receiving network stack which protocol's payload follows — 0x0800 for IPv4, 0x0806 for ARP, 0x86DD for IPv6, 0x8100 for an 802.1Q VLAN tag, and hundreds more registered with the IEEE. Values under 1536 (0x0600) are reserved by the older 802.3 standard to mean a frame length instead, which is how a NIC or switch distinguishes an Ethernet II frame from an 802.3 frame at a glance.

This calculator takes an EtherType value in either hex or decimal and returns the protocol it identifies, along with its registration status. Network engineers reading packet captures, firmware developers writing frame parsers, and students studying the OSI data-link layer use it to quickly decode an unfamiliar EtherType spotted in Wireshark or tcpdump output without digging through the IEEE registry by hand.

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