ICMP Type/Code Lookup

Look up any ICMP type by number or name and see its full code table with meanings.

ICMP type number or name

Type8

NameEcho Request

Code 0Echo request (ping)

How to read the result

ICMP types name the message (8 = ping request, 0 = reply); codes add detail (type 3 code 3 = port unreachable). Ping uses 8/0, traceroute relies on type 11 Time Exceeded.

Example

8 → Echo Request (ping); 3/3 → Port unreachable

FAQ

Which types matter most?

0/8 echo (ping), 3 unreachable, 11 time exceeded (traceroute), 5 redirect.

Can I search by name?

Yes — try 'echo', 'unreachable', or 'time' as well as numbers like 8.