# WHATPORT(888)

## NAME

port 888 — AccessBuilder / CDDB — Registered to 3Com AccessBuilder, remembered for CDDB, and used today as an alternate HTTP port.

Protocol: TCP  
IANA registry

## DESCRIPTION

IANA's formal assignment for 888 is "AccessBuilder", a 3Com remote-access product from the 1990s. The registry carries a second entry for cddbp, the CD Database Protocol, explicitly annotated as recording an unassigned but widespread use: CD players queried CDDB/freedb here for album track listings before that ecosystem moved to HTTP-based services. Neither is meaningfully deployed now. In practice an open 888 is a hand-configured web or admin service, which is why Nmap sees it open relatively often.

## EXPOSURE

**Expose with care.** The historical protocols are gone; what is actually listening is typically an alternate HTTP or admin interface, so judge it on that service's authentication.

## CHECK

```sh
nmap -sV -p 888 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)

---

HTML: <https://whatport.net/888/> · JSON: <https://whatport.net/888.json> · full dataset: <https://whatport.net/ports.json>