who provides bandwidth to Telehouse?

Besides the obvious KDD which shows up in traceroute, does anyone else provide bandwidth to Telehouse? They are spamming contact addresses from the PAIX peering list, and claiming they have every right to do so. We'd like to convince them otherwise. Replies would be best off-list.

Received: from yw-out-2324.google.com (yw-out-2324.google.com [74.125.46.28]) by kininvie.sv.svcolo.com (8.14.1/8.14.2) with ESMTP id n3NIKkTW095522 for <ipadmin@svcolo.com>; Thu, 23 Apr 2009 11:20:46 -0700 (PDT) (envelope-from managedservice@telehouse.com)
Received: by yw-out-2324.google.com with SMTP id 2so198588ywt.47 for <ipadmin@svcolo.com >; Thu, 23 Apr 2009 11:20:46 -0700 (PDT)
Received: by 10.100.171.15 with SMTP id t15mr1759646ane.99.1240510845890; Thu, 23 Apr 2009 11:20:45 -0700 (PDT)
Received: from wohlarsb (fw.telehouse.com [209.137.140.2]) by mx.google.com with ESMTPS id c29sm637866anc.10.2009.04.23.11.20.43 (version=SSLv3 cipher=RC4-MD5); Thu, 23 Apr 2009 11:20:45 -0700 (PDT)
Thread-Index: AcnEP/Q6yPwCzf2XRgmtpXMo9zh8vA==