> ## Documentation Index
> Fetch the complete documentation index at: https://docs.gpuhub.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Open Ports

> How to expose custom services on GPUhub instances.

GPUhub provides public access to each instance's port `6006` and `6008` via a mapped `ip:port`, supporting TCP or HTTP. You can find this `ip:port` via the 'Custom' portal.

<img src="https://mintcdn.com/gpuhub/A2ZFUcrXY6_96IJm/images/bestpractices-visdom-2.png?fit=max&auto=format&n=A2ZFUcrXY6_96IJm&q=85&s=076b53ef61a25950eaee2373fd2c05c2" alt="" width="1642" height="656" data-path="images/bestpractices-visdom-2.png" />

After clicking to access, you can obtain the address, for example: `region-11.gpuhub.com:26040`. `region-11.gpuhub.com` and `26040` are the address and port, respectively.
For examples of using this feature, you can refer to [Visdom documentation](/best-practices/visdom#custom-service-method).