# WHATPORT(13456)

## NAME

port 13456 — Unassigned — Unassigned by IANA; like 12345 it is a keyboard-run number, which is the only reason it ever shows up.

Protocol: TCP  
IANA registry

## DESCRIPTION

IANA has no registration for 13456 — the registry goes from `doip-data` (13400, ISO 13400 Diagnostics over IP for vehicles) to `bprd` (13720, Veritas NetBackup) with nothing in between. Nmap lists the port as `unknown`. Its only claim to appearing at all is that consecutive digits are easy to type, so it turns up as a scratch or test listener in the same way 12345 does. There is no documented product or malware default.

## EXPOSURE

**Expose with care.** A memorable number usually means a hand-started service rather than a managed one. Find out what it is before leaving it reachable.

## CHECK

```sh
nmap -Pn -sV -p 13456 TARGET
```

## SEE ALSO

- iana — [IANA Service Name and Transport Protocol Port Number Registry](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml) (iana.org)

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HTML: <https://whatport.net/13456/> · JSON: <https://whatport.net/13456.json> · full dataset: <https://whatport.net/ports.json>