Re: rack space in NYC?

I'm aware of lists such as http://webhostlist.com/ which lists companies, but generally not locations. And most people are aware of "famous" telecom hotels like 60 Hudson, or 1 Wilshire. In the major cities, its fairly simple. But what about other tier cities, such as Kansas City or Dayton. I was wondering, is anyone maintaining a semi-public list of co-location and telecom hotel locations around the country/world? I remember the landlord of the Westin building was talking about setting up a group for facility landlords in different cities. But I haven't heard anything more about it.