ASN AS19247 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS19247?

AS19247 is listed under Northwestern Memorial Hospital.

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.

AS19247 Northwestern Memorial Hospital

ASN Lookup Tool

Northwestern Memorial Hospital nm.org

US 4 Routes

AS Data

AS19247

AS19247 – Northwestern Memorial Hospital

AS Number	19247
AS Name	AS19247
Organization	Northwestern Memorial Hospital(nmh-1)
Country	US
Website	nm.org
Number of IPv4 Routes	4
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2017-07-07

ASN Intelligence API for production workflows

Use ASN data for AS19247 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
204.62.116.0/24	AS19247	Northwestern Memorial Hospital	Northwestern Memorial Hospital	256
204.62.118.0/24	AS19247	Northwestern Memorial Hospital	Northwestern Memorial Hospital	256
204.62.117.0/24	AS19247	Northwestern Memorial Hospital	Northwestern Memorial Hospital	256
204.62.119.0/24	AS19247	Northwestern Memorial Hospital	Northwestern Memorial Hospital	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:       19247
ASName:         AS19247
ASHandle:       AS19247
RegDate:        2017-07-07
Updated:        2017-07-07    
Ref:            https://rdap.arin.net/registry/autnum/19247


OrgName:        Northwestern Memorial Hospital
OrgId:          NMH-1
Address:        259 East Erie Street
City:           Chicago
StateProv:      IL
PostalCode:     60611
Country:        US
RegDate:        1993-03-31
Updated:        2024-03-19
Ref:            https://rdap.arin.net/registry/entity/NMH-1


OrgTechHandle: BROWJ2-ARIN
OrgTechName:   Brow, John 
OrgTechPhone:  +1-312-695-2244 
OrgTechEmail:  jbrow@nm.org
OrgTechRef:    https://rdap.arin.net/registry/entity/BROWJ2-ARIN

OrgAbuseHandle: JOHNS4388-ARIN
OrgAbuseName:   Johnson, Terrance 
OrgAbusePhone:  +1-312-926-5875 
OrgAbuseEmail:  tmjohnso@nm.org
OrgAbuseRef:    https://rdap.arin.net/registry/entity/JOHNS4388-ARIN

OrgDNSHandle: JOHNS4388-ARIN
OrgDNSName:   Johnson, Terrance 
OrgDNSPhone:  +1-312-926-5875 
OrgDNSEmail:  tmjohnso@nm.org
OrgDNSRef:    https://rdap.arin.net/registry/entity/JOHNS4388-ARIN

OrgDNSHandle: BROWJ2-ARIN
OrgDNSName:   Brow, John 
OrgDNSPhone:  +1-312-695-2244 
OrgDNSEmail:  jbrow@nm.org
OrgDNSRef:    https://rdap.arin.net/registry/entity/BROWJ2-ARIN

OrgTechHandle: JOHNS4388-ARIN
OrgTechName:   Johnson, Terrance 
OrgTechPhone:  +1-312-926-5875 
OrgTechEmail:  tmjohnso@nm.org
OrgTechRef:    https://rdap.arin.net/registry/entity/JOHNS4388-ARIN

OrgAbuseHandle: BROWJ2-ARIN
OrgAbuseName:   Brow, John 
OrgAbusePhone:  +1-312-695-2244 
OrgAbuseEmail:  jbrow@nm.org
OrgAbuseRef:    https://rdap.arin.net/registry/entity/BROWJ2-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
AS33491	Comcast Cable Communications, LLC	US
AS46887	Crown Castle Fiber LLC	US
AS7018	AT&T Enterprises, LLC	US

Upstreams

AS Number	Description	Country
AS33491	Comcast Cable Communications, LLC	US
AS46887	Crown Castle Fiber LLC	US
AS7018	AT&T Enterprises, LLC	US