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  CoreSite offers colocation and interconnection solutions for networks, cloud and IT service providers and enterprise companies spanning a variety of industries.
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Data Centers
- Data Centers
  
  CoreSite facilities are designed and constructed using industry best practices. We currently operate 20 data centers across eight U.S. markets.
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  Watch a video, read a customer testimonial, reference white paper research and review collateral covering our data center facilities and industry topics.
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- About
  
  CoreSite Realty Corporation delivers secure, reliable, high-performance data center and interconnection solutions to a growing customer ecosystem across eight key North American markets.
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Carrier List

CoreSite provides connectivity to over 375 carriers across our portfolio. Interconnecting to these providers within the same colocation environment allows you to reduce costs, minimize latency and simplify your IT architecture. Our interactive carrier list allows you to search for networks by market.


186 Communications						BO
2310 Sepulveda Corp	LA
3DS Communications	LA
AARNet P/L		SV
Access International	LA
Accretive Technology Group Inc.	LA
Acquire Asia Pacific PTY Ltd	LA
ACS Data	LA	SV
AireSpring	LA
Akamai Technologies Inc.	LA	SV	CH	VA	NY	BO	MI
Allied Telecom				VA
Allo Communications								DE
Alyrica Networks Inc				VA
America Movil	LA
American Telesis	LA
AMS-IX		SV	CH
Anova Technologies				VA
Apcela	LA			VA	NY
Arqiva	LA
Aryaka	LA
ASH Cable LLC		SV
AT&T Inc.	LA	SV	CH	VA	NY	BO	MI	DE
AWI Networks	LA
BayRing Communications						BO
Belgacom	LA
Bharti Airtel	LA
Bright Packet Inc	LA
BringCom	LA			VA
British Telecom Group				VA	NY
Broadband Dynamics	LA
BroadVox	LA
Brunei International Gateway	LA
C3 Networks	LA			VA			MI
Cable & Wireless	LA	SV
Cablevision Lightpath NJ LLC					NY
California Internet Solutions	LA
Callvox					NY
Cambridge Bandwidth Consortium						BO
CDNetworks		SV
CenturyLink	LA	SV	CH	VA		BO		DE
CERNET	LA
Charter Communications	LA							DE
China Cache	LA	SV
China Mobile	LA			VA
China Telecom	LA	SV		VA				DE
China Unicom	LA
Chunghwa Telecom	LA			VA
CityLink Telecommunications	LA
Clearwire	LA	SV		VA
CloudFlare	LA							DE
Cloudgenix		SV
CMC Networks	LA		CH		NY		MI	DE
Cogent Communications	LA	SV	CH	VA	NY	BO	MI	DE
Cohere Communications					NY
Collins Communications Inc.								DE
Colt Group SA	LA		CH
Comcast Corporation	LA	SV	CH	VA	NY	BO	MI	DE
Common Networks		SV
Comnet	LA				NY
Comporium				VA
Comsat Inc	LA
ConneXon Telecom	LA
Continent 8 Technologies	LA
Cox Enterprises	LA			VA				DE
Cross River Fiber					NY
Crown Castle International	LA			VA		BO	MI
CyberNet Communications	LA
Dacom	LA
DE-CIX North America Inc.					NY
DID Logic INC.	LA
DIDWW	LA
DiGiCom LTD	LA
DVS Networks Inc.	LA
E-Networks Inc							MI
Echostar					NY			DE
Edgecast Networks Inc.	LA			VA				DE
Ekit.com	LA
Emerging Markets Communications	LA
Emirates Telecommunications Corporation	LA
Epsilon Telecommunications	LA
Everywhere Wireless			CH
Expereo USA inc	LA						MI
Fastly	LA							DE
FastTrack Communications Inc.								DE
Fiber Internet Center	LA	SV
Fiberlight				VA			MI
Fireline	LA
Fonality	LA			VA
FPT Corporation	LA
France Telecom	LA
Franklin Technology Systems	LA
Frontier Communications	LA
G-Core Labs	LA
GBH Communications	LA
Genesis Fiber Communications						BO
GIGAMONSTER								DE
Global Dots Inc	LA							DE
Global Transit	LA
Globe Telecom	LA
Globecast	LA
Google Inc.	LA		CH
Greenfly Networks Inc. a Nevada corporation								DE
GTA Teleguam	LA
GTT	LA	SV	CH	VA	NY	BO	MI	DE
Guangzhou Royal Network Technology Co. Ltd	LA
Hawaiian Telecom	LA
Host SG	LA
Hotel Kiosks Inc	LA
Hudson Fiber Network					NY
Hughes Network Systems LLC	LA
Hurricane Electric	LA	SV	CH	VA	NY			DE
Hutchison Global	LA	SV
Hypersurf		SV
iBasis	LA
IIX Inc.	LA	SV			NY			DE
Impact Telecom	LA
Init7	LA
InSite Wireless Group LLC	LA
Integra Telecom	LA	SV
InterCarrier Networks LLC			CH
Interchange Limited		SV
Internap	LA	SV	CH		NY	BO		DE
Interoute	LA
Iowa Communications Network								DE
IPC Network Services Inc.								DE
IPTP LLC	LA							DE
IT Vocal LLC				VA
Japan Telecom America	LA
Jive Communications	LA
Jump Systems				VA
Junction Network	LA
K-Opti.com	LA
Kakao Corp.	LA
KDDI America Inc.	LA
Kellin Communications								DE
Kio Networks	LA
Korea Telecom	LA
LAIX Corp.	LA				NY
Layer 2 Co Ltd	LA	SV
Layer3 TV INC.	LA			VA	NY
Lepton Global				VA
Level (3) Communications	LA	SV	CH	VA	NY	BO	MI	DE
Lightower Fiber Networks II LLC	LA		CH	VA	NY	BO		DE
Limelight Networks	LA
LINX USA Inc				VA
LiveAir Networks	LA							DE
LiveCom Limited	LA
LTN Global Communications								DE
M1 Limited	LA
Managed Way Company	LA			VA
Marg	LA
Matrix Networks	LA
Megaport	LA	SV		VA	NY			DE
Metroswitch Technologies Inc.	LA
Mitel				VA
MyRepublic Ltd	LA
NantWorks LLC	LA				NY
National Rural Telecommunications Cooperative				VA
Near North Partners LLC								DE
NebraskaLink								DE
Network Billing Systems LLC	LA
Neutrona	LA		CH	VA
New Century Info Comm	LA
NexGen Networks	LA				NY
Nextologies Limited	LA
NiTel	LA							DE
NMSURF								DE
Nobelbiz Inc.	LA
NOS Communications	LA
NTT Communications	LA	SV	CH	VA
OmanTel	LA
One Ring Networks	LA
OneStream Networks	LA
Optic Access	LA	SV
Pacific Carriage	LA	SV
Pacific Northwest Net	LA
Packet Clearing House					NY
PacketFabric LLC	LA	SV	CH	VA	NY	BO	MI	DE
Paradigm Telecom								DE
Pavlov Media Inc.	LA							DE
PAXIO		SV
PC Landing	LA
PCCW	LA			VA
Peerless Network	LA		CH		NY	BO		DE
Phyber	LA
Pilot Fiber	LA				NY			DE
Planters Communications	LA
PLDT	LA				NY
Plum Voice						BO
Protel Services Inc	LA
Proxypipe Inc				VA
PTGI International Carrier Services Inc.				VA
Quality Speaks LLC	LA					BO
RCN				VA	NY	BO
Reliance Communications	LA			VA		BO
Retevia	LA
RETN	LA
Rocket Internetworking	LA
Rocky Mountain Internet								DE
Roots Communication Ltd						BO
Sail Internet		SV
Sansay	LA
Savvis Communications Corporation	LA	SV	CH	VA
Seaborn Networks					NY
SES Americom fka GE	LA
Shaw Communications Inc.	LA
SiFi Networks America	LA
Sify Technologies Limited	LA
SingTel	LA	SV			NY
SIPARTECH					NY
SK Broadband	LA
Skyhook Wireless						BO
Smart Network Solutions							MI
SMIWiFi LLC	LA
Snap Ltd.	LA	SV
Softcom Internet Communications Inc.		SV
Sonet Global Technology				VA
Sonic.net	LA
South Dakota Network								DE
Spectrum Link	LA
Sprint	LA	SV
Star2Star Communications			CH
Starry	LA					BO
Strata Networks								DE
Subrigo	LA
Subrigo Communications Corporation	LA
Summit IG				VA
Sunesys	LA		CH		NY
Superloop	LA	SV
Surfnet Communications		SV
Synergem	LA
Syniverse Technologies	LA	SV
Syringa Networks								DE
T-Mobile							MI
Taiwan Fixed Network Co. Ltd.	LA
Tata Communications	LA				NY			DE
TDS Telecom	LA							DE
Telecom New Zealand USA Limited	LA	SV
Telehouse International	LA				NY
Telekenex Inc		SV						DE
Telesystem								DE
Televergence	LA
TeliaSonera International Carrier	LA	SV	CH	VA				DE
Teliax								DE
Telkom USA Inc.	LA
TELSTRA CORPORATION LIMITED	LA				NY			DE
TELUS Corporation	LA
Teramesh Networks	LA		CH
textPlus Inc.	LA
The Public Joint Stock Company Mobile TeleSystems	LA
Tier One Networks	LA
Time Warner Cable Enterprises LLC	LA						MI
Tirastel	LA
Towardex Technologies International Inc					NY	BO
TowerStream	LA
TPG Internet	LA	SV
Transaction Network Services	LA
Transtelco	LA
Trinity Comminications Inc							MI
Trit Networks	LA
TSG Global						BO
U.S. Telepacific Holdings Corp	LA	SV				BO		DE
Ufinet Guatemala S.A	LA
Ultimate Internet Access	LA
United Internet Exchange			CH
Uno Communications Inc.						BO
US Signal			CH
USConnect Holdings								DE
Utility Telephone	LA
UVNV	LA
Vast Broadband								DE
Velocity The Greatest Phone Company Ever Inc								DE
Veracity Networks	LA
Verizon Communications Inc.	LA	SV	CH	VA	NY	BO	MI	DE
Verizon Virginia Inc.				VA
Vermont Telephone Company						BO
Verso Networks								DE
Vertex Group Ltd.	LA
ViaSat Inc.			CH	VA
Viewqwest	LA
Virtutel Pty Ltd	LA
Visionary								DE
VMWare	LA							DE
VNPT Global USA	LA
Vocus Communications	LA	SV
Voxbone	LA
WaveDivision Holdings LLC	LA	SV
Webpass	LA					BO		DE
Wercs Communications	LA
Wharf T&T Limited	LA
Whitesky Communications	LA
Wide Cloud							MI
WifiRush	LA				NY
Wiline Networks	LA	SV
Windbreak Cable								DE
Windstream Corporation	LA	SV	CH	VA	NY			DE
WingTecJapan	LA
X2nSat		SV
XMission LC	LA
XO Holdings Inc.	LA	SV	CH	VA	NY	BO	MI	DE
Yellow Fiber Network				VA
Zayo Group	LA	SV	CH	VA	NY	BO		DE

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