Ask HN: Managed Colo – Where to find providers?

For a project I'm working on we need to have physical servers next to another companies servers. We don't want to manage the network (IP transit) and we do not have our own ASN. Part of the project is going over the exchange in the datacenter to the other company. We've deployed twice in NYC and LAX and both times have found providers which manage the network side of things, giving us a rack and power and IPs. From there they make sure we're peered over the local exchange to the other company insuring low latency as well as bandwidth costs (all internal vs regular transit).

Now we're looking to expand to Amsterdam and we're facing the same problem. It seems very difficult to find companies which offer this type of offering. I was curious what do people search for this type of offering?

Thanks!

P.S. If you happen to know anyone in Amsterdam's Equinix that provides the above would love to know their information. Email in my profile or just leave a comment!