# WHATPORT(18988)

## NAME

port 18988 — Unassigned — Unregistered and undocumented — present in default scans purely on frequency data.

Protocol: TCP  
IANA registry

## DESCRIPTION

18988 has no IANA assignment and no Nmap service name. It sits in Nmap's default top-1000 TCP list because internet-wide scanning found it open often enough to be worth including. There is no known product default behind it, so any description of an open 18988 has to come from probing the host, not from a registry.

## EXPOSURE

**Expose with care.** Unknown listener. Attribute it locally, then apply the verdict its actual protocol deserves.

## CHECK

```sh
nmap -Pn -sV -p 18988 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)
- source — [Nmap services frequency database](https://github.com/nmap/nmap/blob/master/nmap-services) (github.com)

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HTML: <https://whatport.net/18988/> · JSON: <https://whatport.net/18988.json> · full dataset: <https://whatport.net/ports.json>