# WHATPORT(10621)

## NAME

port 10621 — Unassigned — Unassigned by IANA, no known squatter — whatever answers here is site-local.

Protocol: TCP/UDP  
IANA registry

## DESCRIPTION

10621 falls inside the unassigned gap between Apple's `serverdocs` at 10548 and `printopia` at 10631, and Nmap's service list records it as `unknown` on both TCP and UDP. There is no product convention, malware family, or scanner signature publicly tied to this number. In practice ports in the 10000-11000 band get picked by hand for internal services because the famous neighbours — Webmin and NDMP on 10000, Zabbix on 10050/10051 — made the range familiar to admins. Treat the number as meaningless and read the banner.

## EXPOSURE

**Expose with care.** Unknown service, unknown auth. Check what is actually listening (`ss -ltnp` on the host) before you open a firewall rule for it.

## CHECK

```sh
nmap -Pn -sV -p 10621 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/10621/> · JSON: <https://whatport.net/10621.json> · full dataset: <https://whatport.net/ports.json>