# WHATPORT(3880)

## NAME

port 3880 — IGRS — IGRS — the Chinese home-networking standard for device discovery and resource sharing between PCs, phones and consumer electronics.

Protocol: TCP  
IANA: igrs

## DESCRIPTION

IANA registers 3880 to IGRS, Intelligent Grouping and Resource Sharing, a protocol suite developed by the IGRS Working Group from 2003. It lets information appliances, PCs, and consumer-electronics devices on one local network discover each other, group, and share resources and services — the same problem space as UPnP or DLNA. IGRS 1.0 became a Chinese national industry standard in 2005 and its parts were later published through ISO/IEC. In practice you meet it only on Chinese-market consumer devices, and only on the LAN.

## EXPOSURE

**Do not expose.** A LAN discovery and resource-sharing protocol designed for a trusted home network; exposing it publicly advertises the device and its shared resources to the internet.

## CHECK

```sh
nc -vz TARGET 3880
```

## SEE ALSO

- iana — [IANA port registry — 3880 (igrs)](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=3880) (iana.org)

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HTML: <https://whatport.net/3880/> · JSON: <https://whatport.net/3880.json> · full dataset: <https://whatport.net/ports.json>