Landlord
350 Cermak
717 S. Wells
725 S. Wells
600 S. Federal
Carlyle
Core Location
Coresite
CRG West
Dantis
Digital Realty Trust
Digital Capital Partners
Doral Plaza
El Paso
Fifield
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Data Center
ANET
Arris
Cavalier
Cherry
Cimco
Cogent
Colo.com
Concentric Networks
Confidential Client
Dominion Telecom
Enteract
Fastroot
Globalcom
Interaccess
Layered Networks
Navisite
Netrail
Nexlink
RCN
Steadfast
Switch & Data
Universal Access
Universal Broadband
Verio
XO
Yipes
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Telecomm
AT&T
ICG
Lucent
MCI
MCI -WorldCom
McLeod
Metromedia
MFS
MIDCOM
Neutral Tandem
Nextel
Norlight
Nortel
Ovation
Paetec
TCG
TCG-AT&T
Teletech
Telsav
Time Warner
US Cellular
US One
Var Tek
Vyvx
WCG
WCG-VYVX
Winstar
WorldCom
WorldStar
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