ASN AS2734 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS2734?

AS2734 is listed under CoreSite.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS2734 CoreSite | IPGeolocation.io

ASN Lookup Tool

CoreSite coresite.com

US 80 Routes

AS Data

AS2734

AS2734 – CoreSite

AS Number	2734
AS Name	CORESITE
Organization	CoreSite(cowil)
Country	US
Website	coresite.com
Number of IPv4 Routes	59
Number of IPv6 Routes	21
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2009-09-01

ASN Intelligence API for production workflows

Use ASN data for AS2734 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
66.35.86.0/24	AS2734	CoreSite	CoreSite	256
66.35.64.0/23	AS2734	CoreSite	CoreSite	512
66.35.68.0/22	AS2734	CoreSite	CoreSite	1024
2605:6c00:3::/48	AS2734	CoreSite	CoreSite	~1×10²⁴
2605:6c00:8000::/36	AS2734	CoreSite	CoreSite	~5×10²⁷
2605:6c00:a000::/36	AS2734	CoreSite	CoreSite	~5×10²⁷
66.128.148.0/22	AS2734	CoreSite	CAS	1024
2605:6c00::/48	AS2734	CoreSite	CoreSite	~1×10²⁴
206.223.143.0/24	AS2734	CoreSite	CoreSite	256
98.158.152.0/22	AS2734	CoreSite	U.S. COLO, LLC	1024

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: 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: 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: 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

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: JFA116-ARIN
OrgTechName:   Favis, Jerome 
OrgTechPhone:  +1-213-216-1155 
OrgTechEmail:  jerome.favis@coresite.com
OrgTechRef:    https://rdap.arin.net/registry/entity/JFA116-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
AS7500	WIDE Project	JP
AS26548	PureVoltage Hosting Inc.	US
AS394330	LTD Broadband LLC	US
AS38880	Micron21 Datacentre Pty Ltd	AU
AS13631	CITADEL ENTERPRISE AMERICAS LLC	US
AS53766	Avago Technologies U.S. Inc.	US
AS46401	OmniSync Networks	US

Upstreams

AS Number	Description	Country
AS39120	Convergenze S.p.A.	IT
AS64126	DOMINICAN TELECOM PRIME, DTP, S.R.L.	DO
AS264409	GRUPO YAX	BR
AS9304	HGC Global Communications Limited	HK
AS9002	RETN Limited	GB
AS10111	Zeofast Network	CN
AS6939	Hurricane Electric LLC	US
AS286	GTT Communications Inc.	US
AS2914	NTT America, Inc.	US
AS33891	Core Backbone GmbH	DE

Downstreams

AS Number	Description	Country
AS398079	Eminent, Inc	US
AS11333	CyberTrails	US
AS26551	Sargent & Lundy Engineers	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
AS393827	BJS WHOLESALE CLUB	US