ASN Lookup Tool

CoreSite coresite.com US US 84 Routes

AS Data

AS2734

AS2734 – CoreSite

AS Number 2734
AS Name CORESITE
Organization CoreSite (cowil)
Country US
Website coresite.com
Number of IPv4 Routes 63
Number of IPv6 Routes 21
ASN type BUSINESS
Registry ARIN
Date Allocated 2009-09-01

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IP Ranges

Route # IPs
66.35.86.0/24 256
66.35.64.0/23 512
66.35.68.0/22 1024
2605:6c00:3::/48 ~1×10²⁴
2605:6c00:8000::/36 ~5×10²⁷
2605:6c00:a000::/36 ~5×10²⁷
66.128.148.0/22 1024
2605:6c00::/48 ~1×10²⁴
206.223.143.0/24 256
98.158.152.0/22 1024
67.212.152.0/24 256
98.158.158.0/23 512
192.34.20.0/23 512
173.45.175.0/24 256
2605:6c00:1::/48 ~1×10²⁴
204.9.206.0/24 256
66.128.144.0/23 512
142.255.192.0/18 16384
98.158.144.0/22 1024
2605:6c00:8::/48 ~1×10²⁴
208.64.254.0/23 512
199.119.180.0/22 1024
2604:3fc0:2000::/36 ~5×10²⁷
2605:6c00:3000::/36 ~5×10²⁷
204.9.204.0/24 256
66.35.67.0/24 256
66.35.83.0/24 256
98.158.156.0/24 256
66.128.154.0/24 256
98.158.148.0/24 256
67.212.156.0/23 512
66.35.66.0/24 256
67.212.151.0/24 256
98.158.144.0/23 512
98.158.157.0/24 256
2605:6c00:6000::/36 ~5×10²⁷
199.197.10.0/23 512
208.77.96.0/21 2048
2605:6c00:7::/48 ~1×10²⁴
2605:6c00:2::/48 ~1×10²⁴
173.45.174.0/24 256
204.9.207.0/24 256
208.78.157.0/24 256
66.128.152.0/23 512
208.74.78.0/23 512
66.35.72.0/21 2048
67.212.146.0/23 512
66.128.146.0/24 256
2605:6c00:7000::/36 ~5×10²⁷
2605:6c00:5000::/36 ~5×10²⁷
66.35.87.0/24 256
67.212.148.0/23 512
2605:6c00:4::/48 ~1×10²⁴
208.64.251.0/24 256
67.212.153.0/24 256
162.216.127.0/24 256
66.128.155.0/24 256
204.9.200.0/22 1024
2605:6c00:2000::/36 ~5×10²⁷
98.158.150.0/23 512

Raw Whois Response

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       2734
ASName:         CORESITE
ASHandle:       AS2734
RegDate:        2009-09-01
Updated:        2012-03-02
Ref:            https://rdap.arin.net/registry/autnum/2734


OrgName:        CoreSite
OrgId:          COWIL
Address:        1001 17th St
Address:        Suite 500
City:           Denver
StateProv:      CO
PostalCode:     80202
Country:        US
RegDate:        2005-01-14
Updated:        2025-04-09
Ref:            https://rdap.arin.net/registry/entity/COWIL


OrgTechHandle: JENSE37-ARIN
OrgTechName:   Jensen, John 
OrgTechPhone:  +1-571-612-7142 
OrgTechEmail:  john.jensen@coresite.com
OrgTechRef:    https://rdap.arin.net/registry/entity/JENSE37-ARIN

OrgTechHandle: JFA116-ARIN
OrgTechName:   Favis, Jerome 
OrgTechPhone:  +1-213-216-1155 
OrgTechEmail:  jerome.favis@coresite.com
OrgTechRef:    https://rdap.arin.net/registry/entity/JFA116-ARIN

OrgTechHandle: REEDC55-ARIN
OrgTechName:   Reed, Christopher 
OrgTechPhone:  +1-213-327-1203 
OrgTechEmail:  chris.reed@coresite.com
OrgTechRef:    https://rdap.arin.net/registry/entity/REEDC55-ARIN

OrgTechHandle: STANL503-ARIN
OrgTechName:   Stanley, Michael 
OrgTechPhone:  +1-202-827-7002 
OrgTechEmail:  michael.stanley@coresite.com
OrgTechRef:    https://rdap.arin.net/registry/entity/STANL503-ARIN

OrgTechHandle: CMM8-ARIN
OrgTechName:   Malayter, Christopher Michael
OrgTechPhone:  +1-608-301-5180 
OrgTechEmail:  chris.malayter@coresite.com
OrgTechRef:    https://rdap.arin.net/registry/entity/CMM8-ARIN

OrgAbuseHandle: CORES5-ARIN
OrgAbuseName:   CoreSite Abuse
OrgAbusePhone:  +1-866-777-2673 
OrgAbuseEmail:  abuse@coresite.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/CORES5-ARIN

OrgNOCHandle: CORES4-ARIN
OrgNOCName:   Coresite OSC
OrgNOCPhone:  +1-866-777-2673 
OrgNOCEmail:  osc@coresite.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/CORES4-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#

Parsed Whois Response

Peers

AS Number Description Country
AS399457 NEW WINDSOR TELEPHONE CO US
AS62713 PubMatic, Inc. US
AS27370 City of Boston US
AS262589 SAMM TECNOLOGIA E TELECOMUNICACOES S.A BR
AS7500 WIDE Project JP
AS394330 LTD Broadband LLC US
AS38880 Micron21 Datacentre Pty Ltd AU
AS13631 CITADEL ENTERPRISE AMERICAS LLC US
AS14401 SolidNetwork Technologies, Inc. US
AS46401 OmniSync Networks US
AS21351 Canal + Telecom SAS GP
AS40850 UPIX NETWORKS INTERNATIONAL LLC US
AS32899 Bresco Broadband US
AS14773 Lancaster Lebanon Intermediate Unit 13 US
AS399647 Rumble USA Inc. US
AS7941 Internet Archive US
AS55262 Anthem Broadband US
AS3303 Swisscom Schweiz AG CH
AS35871 Reynolds Cable, Inc US
AS215724 Edgevana, Inc. US
AS11767 Quality Technology Services, LLC US
AS19255 YOUR.ORG, INC. US
AS1000 LINK AMERICAN US
AS23367 Adaptive Data Networks, LLC US
AS36692 Cisco OpenDNS, LLC US
AS33724 VOLICO US
AS32590 Valve Corporation US
AS22302 INOC, LLC US
AS198622 Adform A/S DK
AS62886 OMNITEL COMMUNICATIONS US
AS55134 SKYNET360 LLC US
AS23379 Blackburn Technologies II, LLC PR
AS402020 Planisys Corp US
AS9507 NextHop Pty Ltd AU
AS29838 Atlantic Metro Communications II, Inc. US
AS1828 Unitas Global US
AS999 CORIX NETWORKS US
AS396317 Vitalink LLC US
AS396986 Bytedance Inc. US
AS32787 Akamai Technologies, Inc. US
AS398079 Eminent, Inc US
AS399606 Imaging Bay, Inc. US
AS262761 Sinal Br Telecom Ltda BR
AS18519 MTC Technologies US
AS5651 GMLL CAPITAL MANAGEMENT LLC US
AS10111 Zeofast Network CN
AS20141 Quality Technology Services, LLC US
AS15305 Syringa Networks, LLC US
AS30419 PaeDae, Inc. US
AS44431 OmniAccess S.L. ES
AS7049 Silica Networks Argentina S.A. AR
AS401174 State of California, Department of Technology US
AS28398 INTERNET TELEFONIA Y TV DE MICHOACAN SA DE CV MX
AS31950 Data Network Solutions US
AS23089 Hotwire Communications US
AS3479 Board of Regents of the University System of Georgia US
AS31877 Accelecom US
AS55850 Mercury NZ Limited NZ
AS4310 Seminole State College of Florida US
AS10310 Yahoo Holdings Inc. US

Upstreams

AS Number Description Country
AS39120 Convergenze S.p.A. IT
AS64126 DOMINICAN TELECOM PRIME, DTP, S.R.L. DO
AS7195 EDGEUNO S.A.S CO
AS9002 RETN Limited GB
AS10111 Zeofast Network CN
AS25091 IP Max SA CH
AS6939 Hurricane Electric LLC US
AS286 GTT Communications Inc. US
AS6057 Administracion Nacional de Telecomunicaciones UY
AS2914 NTT America, Inc. US
AS13030 Init7 Switzerland Ltd. CH
AS33891 Core Backbone GmbH DE
AS4230 CLARO S.A. BR
AS37468 Angola Cables AO
AS7575 Australian Academic and Research Network AU
AS3303 Swisscom Schweiz AG CH
AS6424 EDGOO NETWORKS UNIPESSOAL LDA PT
AS3257 GTT Communications Inc. US
AS27552 TowardEX Technologies International, Inc. US
AS137409 GSL Networks Pty LTD AU

Downstreams

AS Number Description Country
AS398079 Eminent, Inc US
AS11333 CyberTrails US
AS26551 Sargent & Lundy Engineers US
AS4310 Seminole State College of Florida US
AS5651 GMLL CAPITAL MANAGEMENT LLC US
AS29906 Westat, Inc. US
AS10255 Sinister and Solitary US
AS22330 Catalina Marketing Corporation US
AS54525 APPLIED GLOBAL TECHNOLOGIES, LLC US
AS397822 California Resources Corporation US

Contacts

Email Contacts

jerome.favis@coresite.com chris.reed@coresite.com chris.malayter@coresite.com john.jensen@coresite.com michael.stanley@coresite.com

Abuse Contacts

abuse@coresite.com

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Frequently Asked Questions

ASN AS2734 is an Autonomous System Number used to identify a network for BGP internet routing.
AS2734 is listed under CoreSite.
Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.
Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.
WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.
This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.