# WHATPORT(1052)

## NAME

port 1052 — DDT (Dynamic DNS Tools) — Dynamic DNS Tools — a client/server for remote authenticated DNS updates, dormant since 2013.

Protocol: TCP/UDP  
IANA registry

## DESCRIPTION

IANA assigns 1052 to `ddt`, "Dynamic DNS Tools", a small C++ client/server project that let clients push authenticated updates into a DNS zone before RFC 2136 dynamic update and `nsupdate` became the standard way to do that. The project shipped as `ddt-client` and `ddt-server` in Debian and was last released in 2013; SourceForge marks it inactive. You will rarely meet a live ddt-server today. A listener on 1052 is more often an unrelated application than this project, so fingerprint before you conclude.

## EXPOSURE

**Do not expose.** A service whose whole job is writing DNS records, with no upstream maintenance since 2013 — do not put it on a public interface; use RFC 2136 with TSIG instead.

## CHECK

```sh
nmap -Pn -sV -p 1052 TARGET
```

## SEE ALSO

- docs — [Dynamic DNS Tools (DDT) project page](https://sourceforge.net/projects/ddt/) (sourceforge.net)
- 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/1052/> · JSON: <https://whatport.net/1052.json> · full dataset: <https://whatport.net/ports.json>