ASN AS11687 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS11687?

AS11687 is listed under City of Hope Medical Center.

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.

AS11687 City of Hope Medical Center

ASN Lookup Tool

City of Hope Medical Center coh.org

US 4 Routes

AS Data

AS11687

AS11687 – City of Hope Medical Center

AS Number	11687
AS Name	CITY-OF-HOPE
Organization	City of Hope Medical Center(chmc-3)
Country	US
Website	coh.org
Number of IPv4 Routes	4
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	1998-11-16

ASN Intelligence API for production workflows

Use ASN data for AS11687 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
151.152.92.0/24	AS11687	City of Hope Medical Center	City of Hope Medical Center	256
151.152.96.0/19	AS11687	City of Hope Medical Center	City of Hope Medical Center	8192
151.152.128.0/19	AS11687	City of Hope Medical Center	City of Hope Medical Center	8192
151.152.99.0/24	AS11687	City of Hope Medical Center	City of Hope Medical Center	256

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:       11687
ASName:         CITY-OF-HOPE
ASHandle:       AS11687
RegDate:        1998-11-16
Updated:        2012-03-02    
Ref:            https://rdap.arin.net/registry/autnum/11687


OrgName:        City of Hope Medical Center
OrgId:          CHMC-3
Address:        1500 E. Duarte Road
City:           Duarte
StateProv:      CA
PostalCode:     91010
Country:        US
RegDate:        1991-07-30
Updated:        2007-07-13
Ref:            https://rdap.arin.net/registry/entity/CHMC-3


OrgNOCHandle: ITSP-ARIN
OrgNOCName:   Information Technology Services POC
OrgNOCPhone:  +1-626-256-4673 
OrgNOCEmail:  ARIN-POC@coh.org
OrgNOCRef:    https://rdap.arin.net/registry/entity/ITSP-ARIN

OrgAbuseHandle: ITSP-ARIN
OrgAbuseName:   Information Technology Services POC
OrgAbusePhone:  +1-626-256-4673 
OrgAbuseEmail:  ARIN-POC@coh.org
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ITSP-ARIN

OrgTechHandle: ITSP-ARIN
OrgTechName:   Information Technology Services POC
OrgTechPhone:  +1-626-256-4673 
OrgTechEmail:  ARIN-POC@coh.org
OrgTechRef:    https://rdap.arin.net/registry/entity/ITSP-ARIN

RTechHandle: ITSP-ARIN
RTechName:   Information Technology Services POC
RTechPhone:  +1-626-256-4673 
RTechEmail:  ARIN-POC@coh.org
RTechRef:    https://rdap.arin.net/registry/entity/ITSP-ARIN

RAbuseHandle: ITSP-ARIN
RAbuseName:   Information Technology Services POC
RAbusePhone:  +1-626-256-4673 
RAbuseEmail:  ARIN-POC@coh.org
RAbuseRef:    https://rdap.arin.net/registry/entity/ITSP-ARIN

RNOCHandle: ITSP-ARIN
RNOCName:   Information Technology Services POC
RNOCPhone:  +1-626-256-4673 
RNOCEmail:  ARIN-POC@coh.org
RNOCRef:    https://rdap.arin.net/registry/entity/ITSP-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
AS46887	Crown Castle Fiber LLC	US
AS20001	Charter Communications Inc	US
AS20454	SECURED SERVERS LLC	US

Upstreams

AS Number	Description	Country
AS46887	Crown Castle Fiber LLC	US
AS20001	Charter Communications Inc	US
AS20454	SECURED SERVERS LLC	US