In the real world two organizations have to lay cables to one another when they want to peer. This is why IXPs (Internet Exchange Points) or IXes (Internet Exchanges) for short exist. Instead of laying cables to one another, organizations lay cables to an exchange instead. This allows them to peer with hundreds of other companies.

In DN42 this is less relevant as links between peers are using 'cheap' VPNs.

IXP frnte operated by LGP Corp: IXP frnte

A few people have provided exchanges previously on DN42, however they created single points of failure and are no longer operating

The NL-Zuid website is also available from the public internet:

Its generally recommended to only announce prefixes from your own network and that of your transit customers.