# WHATPORT(2047)

## NAME

port 2047 — dls (registration only) — Named dls in the registry, with no description — and not the Directory Location Service, which is port 197.

Protocol: TCP/UDP  
IANA registry

## DESCRIPTION

IANA lists dls on TCP and UDP 2047 with no description, assignee or reference. The same three letters are also registered at port 197 where they do mean something — Directory Location Service — so the 2047 entry is a name collision rather than the same protocol on a second port. It pairs with dls-monitor on 2048, and neither has published documentation; Nmap sees 2047 open on about 0.02% of hosts.

## EXPOSURE

**Expose with care.** No documented protocol and a misleading name. Identify the listening process rather than inferring a service from the label.

## CHECK

```sh
sudo lsof -nP -iTCP:2047 -sTCP:LISTEN
```

## 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 — Nmap port frequency data](https://github.com/nmap/nmap/blob/master/nmap-services) (github.com)

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HTML: <https://whatport.net/2047/> · JSON: <https://whatport.net/2047.json> · full dataset: <https://whatport.net/ports.json>