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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
  
  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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- 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
24/7 Mid Atlantic Network				VA
365 Main			CH
3GTY, Inc.	LA
4 Less Communications	LA
ABA Net Telecommunications				VA
ACS Data	LA	SV
AdaptiveApps				VA
Adobe Systems Incorporated						BO
ADrive	LA
Afilias USA	LA
Aframe	LA				NY
Aftergen		SV
AireSpring	LA
Akliz						BO
Allied Telecom				VA
Altay Corporation	LA					BO
Amazon - A100	LA	SV		VA	NY
American Telesis	LA
AMS-IX		SV	CH
ANEXIA	LA
Anova Technologies				VA
Applied Operations		SV
Appneta		SV				BO
Apstrktr		SV
Arista Networks, Inc.		SV		VA
Armada Backup	LA
ARP Networks	LA
Arqiva	LA
Aryaka	LA
Aspen Technology						BO
AT&T Inc.	LA	SV		VA	NY	BO
Atlantic Metro Communications	LA				NY
Atlantis Computing Inc		SV
AtratoIP Networks	LA							DE
Autodata Solutions			CH
Avatar Labs	LA
AWI Networks	LA
Awknet	LA
Axcelx Technologies						BO
Azzaron	LA
BackOffice Associates, LLC						BO
Bat Blue Corporation	LA
BayRing Communications						BO
BBCOM	LA
Bel Air Internet	LA
Belgacom	LA
Bharti Airtel	LA
Bigstep			CH
Black Duck Software, Inc., a Delaware corporation						BO
Black Lotus Communications	LA
BlackMesh				VA
Bodis LLC					NY
Box 3 Solutions	LA
Box Inc	LA	SV
Bright Packet Inc	LA
BrightEdge		SV
BringCom	LA
British Telecom Group				VA	NY
Broadband Dynamics	LA
BroadVox	LA
Brunei International Gateway	LA
BSO Network Solutions	LA
Burkins Web				VA
C2 Hosting							MI
Cable & Wireless	LA
Cablevision Lightpath NJ LLC					NY
California Internet Solutions	LA
Callvox					NY
Cambridge Bandwidth Consortium						BO
Cartagon, S.L.							MI
CDNetworks		SV
Centennial Board of Cooperative Educational Services								DE
CenturyLink	LA	SV	CH	VA		BO		DE
CENX					NY
CERNET	LA
Charter Communications	LA							DE
Chi Networks			CH
China Cache	LA	SV
China Mobile	LA
China Telecom	LA	SV		VA
China Unicom	LA
Chunghwa Telecom	LA			VA
CifNet			CH
Cinenet Systems	LA
Cisco Systems, Inc.	LA	SV		VA		BO
CityLink Fiber	LA	SV
Clan Servers Hosting, LLC	LA	SV					MI
Clarifai Inc					NY
Clearwire	LA	SV		VA
Cloud Grid				VA			MI
CloudBrain		SV
CloudFlare								DE
Cloudgenix		SV
CLYNK						BO
CMC Networks	LA		CH		NY		MI	DE
Codebex, Inc.				VA
Cogent Communications	LA	SV	CH	VA	NY	BO	MI	DE
Cohere Communications					NY
Cohesity		SV
Collins Communications Inc.								DE
Colt Technology	LA
Comcast Corporation	LA	SV	CH	VA	NY	BO	MI	DE
Commercial Network Services	LA
Comnet	LA				NY
ComputerSupport.com						BO
ComTechnologies				VA
ConneXon Telecom	LA
Continent 8 Technologies	LA
Cox Enterprises	LA			VA
Cross River Fiber					NY
Crowd Strike		SV
Curatel	LA
CyberNet Communications	LA	SV
Cybric						BO
Dacom	LA
Daily Razor Hosting				VA
Data Processing Solutions		SV		VA
Datacamp limited	LA		CH
Datapipe		SV	CH	VA
Datasol				VA
Datawise Systems Inc		SV
Datotel			CH
DE-CIX North America Inc.					NY
Denetron LLC		SV
Denetron, LLC		SV
DiGiCom LTD	LA
Digital West Networks	LA
Dish Dbs Corporation								DE
Drafting Cloud	LA
Dreamhost	LA
Dropbox				VA
DSCI Corporation						BO
Duodecad IT Services USA, LLC.	LA
DVS Networks, Inc.	LA
DynDNS	LA
E-Networks Inc							MI
EagleBrook Data Management		SV
EarthLink, Inc.	LA		CH	VA	NY
Echostar					NY
Eftel	LA
Ekit.com	LA
Emerging Markets Communications	LA
Emirates Telecommunications Corporation	LA
Energy Group		SV					MI
Enfusion LLC			CH		NY
Enki		SV
Epicor Software Corporation		SV		VA
EPOM Ltd				VA
Epsilon Telecommunications	LA
Equinix		SV
esoSoft Corporation	LA
Expereo USA inc	LA
Faction								DE
Fastly								DE
FastTrack Communications, Inc.								DE
FC2 Inc	LA
Fiber Internet Center	LA	SV
Fibergate				VA
Fiberlight				VA			MI
Fireline	LA
Five 9, Inc.		SV
Flatiron Health					NY
Forward Networks		SV
Fibernet Direct							MI
FPT Corporation	LA
France Telecom	LA				NY
Franklin Technology Systems	LA
Freedom Telecommunications	LA
Frontier Communications	LA
Gas & Power Technologies		SV
GBH Communications	LA
Genesis Fiber Communications						BO
GigaMedia Access Corporation DBA GigaTrust				VA
GIGAMONSTER								DE
Global Capacity	LA							DE
Global Dots	LA
Global Frag Networks	LA
Global Transit	LA
GlobalWeb Corp.							MI
Granite Telecommunications								DE
Greenfly Networks Inc., a Nevada corporation								DE
GTA Teleguam	LA
GTT	LA	SV	CH	VA	NY		MI	DE
Guam Cablevision	LA
Handy Networks, LLC								DE
Hawaiian Telecom	LA
Hewlett-Packard Enterprise	LA
Hibernia Atlantic U.S. LLC	LA			VA		BO		DE
Hivelocity Ventures Corporations	LA
Homepage Universe, Inc.	LA
Host SG	LA
Host Virtual	LA		CH	VA
HostVentures.com, Inc.				VA
Hotel Kiosks, Inc	LA
Hudson Fiber Network					NY
Hurricane Electric	LA	SV	CH	VA	NY			DE
Hutchison Global	LA
iBasis	LA
ICANN				VA
IH Networks	LA
iiNet Limited - Los Angeles		SV
IIX Inc.	LA	SV			NY			DE
Ikoula							MI
iland internet solutions corporation	LA			VA		BO
Illuminate Education	LA
immixGroup				VA
Impact Telecom	LA
Imperva	LA
Impulse Internet Services	LA
InContact	LA
INET Services			CH			BO
Infortech Corporation		SV
Infostewards			CH
Init7	LA
Inovalon				VA
InsightSquared						BO
InSite Wireless Group, LLC	LA
Integra Telecom	LA	SV
InterCarrier Networks, LLC			CH
Intermedia		SV		VA				DE
Internap	LA	SV	CH			BO		DE
International Business Machines Corp.	LA			VA				DE
Interoute	LA
Intronis Technologies	LA					BO
Intuit, Inc		SV
Iowa Communications Network								DE
IPC Network Services, Inc.								DE
IPTP, LLC	LA							DE
iStreet Solutions		SV
IT Services	LA
IT Vocal LLC				VA
IX Reach	LA
James Brumaghim						BO
Japan Telecom America	LA
Jive Communications	LA
JNJ Mobile						BO
Junction Network	LA
K-Opti.com	LA
Kakao Corp.	LA
Kaspersky Lab						BO
KDDI America, Inc.	LA
Kerio Technologies					NY
KINX	LA
Konge Tech Corporation							MI
Korea Telecom	LA
LAIX, Corp.	LA				NY
Lake 5 Media					NY
Lanair Group	LA
Lashback	LA
Last Mile Solutions LLC						BO
Layer 2 Co Ltd	LA	SV
Layer3 TV, INC.				VA
Layer42	LA	SV
Level (3) Communications	LA	SV	CH	VA	NY	BO	MI	DE
Lightower Fiber Networks II, LLC	LA		CH	VA	NY	BO		DE
Link 11	LA
Linx Telecom	LA
LINX USA Inc				VA
LiveAction		SV
LiveAir Networks	LA							DE
Looking Forward Networks	LA
Lume	LA			VA
M1 Limited	LA
Madison Technology					NY
Marcatel Communications	LA
Marg	LA
Matrix Networks	LA
MaviSky Technology Services							MI
MaxPoint		SV
Med Tech Solutions	LA
Megapath	LA
Megaport	LA	SV		VA	NY
MerlinOne, Inc.						BO
Message Communications	LA
Metro Net	LA
Metro Red	LA
Metrodatapath	LA
MetroPCS							MI
Metroswitch Technologies, Inc.	LA
Mexico Internet Exchange S.A. de C.V.	LA
Micfo								DE
Micron21	LA
Microsoft	LA
Mineral LLC	LA
MojoHost							MI
Motor Vehicle Software Company	LA
Mox Networks	LA	SV		VA	NY	BO
Multacom	LA
Mycloudstar		SV			NY
Near North Partners, LLC								DE
Network Billing Systems, LLC	LA
Neutrona	LA		CH	VA
New Century Info Comm	LA
Newbridge Securities Corporation				VA
NewCloud Networks	LA
NexGen Networks	LA
Nextologies Limited	LA
Nexusguard Limited	LA
NiTel	LA							DE
nLayer	LA
No-IP	LA
NobelTel	LA
NOS Communications	LA
Ns3i, LLC		SV
NTT Communications	LA	SV	CH	VA
Nuance Communications						BO
OmanTel	LA
One Source Networks	LA
One.com				VA
OneStream Networks	LA
Optic Access	LA	SV
Osiris Communications		SV
OVH SAS	LA
Pacific Carriage	LA	SV
Packet Clearing House					NY
PacNet	LA
Paperspace		SV			NY
Pavlov Media, Inc.	LA
PAXIO		SV
PC Landing	LA
PCCW	LA			VA
PEER1 NETWORK	LA
Peerless Network	LA		CH	VA	NY	BO		DE
PEG Bandwidth				VA
PEG Tech Inc		SV
Perseus Telecom	LA
Phyber	LA
Pipe International	LA
Platform 9		SV
PLDT	LA				NY
Portgeeks, LLC						BO
Precision Computer Works				VA
Premier Innovations LLC	LA
prgmr.com, Inc.		SV
Professional Accounting Solutions				VA
Profuse Solutions Inc	LA			VA
Progent		SV
Prosites.com	LA
Prospeed						BO
PTGI International Carrier Services Inc.				VA
QuadraNet	LA
Quality Speaks LLC	LA					BO
Query Foundry	LA
Rack Alley	LA
RCN				VA		BO
Recovery Point Systems				VA
Reliance Communications	LA		CH	VA		BO
RemoteLink			CH
ReSource Pro		SV
Responsive Data Solutions				VA
RETN		SV
ReWired Networks Corp.	LA
Rhythmic Technologies		SV		VA
Roadway Communication	LA
Rocket Fuel, Inc.	LA
Rocket Internetworking	LA
Roots Communication Ltd						BO
Rsync.net								DE
Rubrik		SV
Sand Dune Mail Ltd			CH	VA
Sansay	LA
Savvis Communications Corporation	LA	SV	CH	VA
ScaleArc		SV
Seaborn Networks					NY
Serverel		SV
ServInt	LA			VA
SES Americom fka GE	LA
ShapeShifter Technology Inc.	LA
Shaw Communications Inc.	LA
Shelcomm	LA
Sify Technologies Limited	LA
Single Hop	LA
SingTel	LA	SV			NY
Sirius Telecom	LA
SK Broadband	LA
Skout		SV
SKYBEAM								DE
SkyCreek Corporation			CH	VA
Skyhook Wireless						BO
Skyriver Communications	LA
Smart Network Solutions							MI
Snap Ltd.	LA	SV
SNET Communications			CH
Softcom Internet Communications, Inc.		SV
Soliant Consulting			CH
Sonic.net	LA
South Dakota Network								DE
SPEARLINE LABS					NY
Spread Networks			CH
Sprint	LA	SV
Sqrrl						BO
Sta. Barbara Utilities N.V.- Tres Networks							MI
Staminus Communications	LA
Star2Star Communications			CH
StarHub	LA
Start Communications	LA
Subrigo	LA
Summit IG				VA
Sunesys	LA		CH		NY
Supreme Technologies			CH
Surfnet Communications		SV
Swiftway		SV
Swisscom				VA
Symmetry				VA
Synack, Inc.		SV
Syncromatics Corporation	LA
Syniverse Technologies	LA	SV
Syringa Networks								DE
T-Systems	LA
Taiwan Fixed Network Co., Ltd.	LA
Tata Communications	LA				NY			DE
TCN	LA
TDS Telecom	LA							DE
Telecom New Zealand USA Limited	LA	SV
Telehouse International	LA				NY
Telekenex, Inc		SV						DE
Televergence	LA
TeliaSonera International Carrier	LA	SV	CH	VA				DE
Teliax								DE
Telkom USA, Inc.	LA
TelMex	LA
TELSTRA CORPORATION LIMITED	LA				NY
TELUS Corporation	LA
Teramesh Networks	LA		CH
Threshold Communications				VA
Tier One Networks	LA
Tiggee	LA			VA
Tikoo Solutions			CH
TimberLAN Inc.								DE
Time Warner Cable	LA						MI	DE
Tirastel	LA
TNCI Operating Company LLC				VA
Towardex Technologies International, Inc					NY	BO
TowerStream	LA
Transaction Network Services	LA
Transbeam	LA
Transera	LA
Transtelco	LA
Trit Networks	LA
TSG Global						BO
U.S. Dedicated	LA		CH
U.S. Telepacific Holdings Corp	LA	SV
Ubiquity Servers	LA
Ufinet Guatemala, S.A	LA
Uila Networks		SV
Ultimate Internet Access	LA
Unitas Global	LA
United Internet Exchange			CH
United Private Networks								DE
Uno Communications, Inc.						BO
UpCloud Chicago Inc			CH
US Signal			CH
Utility Telephone	LA
UVNV	LA
VASCO Data Security		SV				BO
Vast Broadband								DE
Vectra Networks		SV
Vectus	LA
Veracity Networks	LA
Veracode, Inc.						BO
Verizon Communications Inc.	LA	SV	CH	VA	NY	BO	MI
Vermont Telephone Company						BO
Verso Networks								DE
Vertex Group Ltd.	LA
ViaSat, Inc.			CH	VA
Viewqwest	LA
Vinakom			CH
Virtela Communications	LA
Virtutel Pty Ltd	LA
Vision Internet Providers Inc	LA
Visionary						BO		DE
Vivid-Hosting	LA
Vnetrix	LA
VNPT Global USA	LA
Voce Telec fka Andiamo Telecom	LA
Vocus Communications	LA	SV
VODAFONE GROUP SERVICES LIMITED	LA	SV
Voxbone	LA
VOXILITY	LA
Vzure Solutions		SV
Wavestreet		SV
WCW Technologies				VA
Web.com.ph Inc.	LA
Webpass	LA					BO
Wercs Communications	LA
WestNet Link	LA
Wharf T&T Limited	LA
Whitlock Data Services			CH
WideOpenWest						BO
WifiRush	LA				NY
Wiline Networks	LA	SV
Wilshire Connection LLC	LA
Windbreak Cable								DE
Windstream Corporation		SV	CH	VA
Wiredtree			CH
Wolfe Internet Services	LA							DE
WV Fiber	LA	SV
Xerocole	LA
XION GmbH				VA
XO Holdings Inc.	LA	SV	CH	VA	NY	BO	MI	DE
Yellow Fiber Network				VA
Zayo Group	LA	SV	CH	VA	NY	BO		DE
Zenedge	LA
Zione Solutions				VA
Zoom Video Communications		SV
Zscaler	LA			VA
Zuora		SV
ZYEdge				VA

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