# WHATPORT(1033)

## NAME

port 1033 — netinfo-local — Registered as Apple's local NetInfo port — a directory service Apple removed from macOS years ago.

Protocol: TCP/UDP  
IANA registry

## DESCRIPTION

IANA assigns 1033 to `netinfo-local`, "local netinfo port", registered in 2002 by an Apple engineer. NetInfo was the directory and configuration database used by NeXTSTEP and early Mac OS X; Apple replaced it with Open Directory and dropped it entirely, so no current macOS ships a NetInfo daemon. Finding 1033 open today therefore is not NetInfo — on older Windows it is another endpoint from the pre-Vista 1025-5000 dynamic RPC range, and elsewhere it is an application that took a free low port.

## EXPOSURE

**Expose with care.** The registered service is extinct, so an open 1033 is an unidentified listener; a directory or RPC service found here should stay on a private network.

## CHECK

```sh
sudo lsof -nP -iTCP:1033 -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)

---

HTML: <https://whatport.net/1033/> · JSON: <https://whatport.net/1033.json> · full dataset: <https://whatport.net/ports.json>