ASN AS15120 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS15120?

AS15120 is listed under Rockford Health System.

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.

AS15120 Rockford Health System

ASN Lookup Tool

Rockford Health System mhemail.org

US 1 Routes

AS Data

AS15120

AS15120 – Rockford Health System

AS Number	15120
AS Name	RHS-AS
Organization	Rockford Health System(rhs-50)
Country	US
Website	mhemail.org
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2011-12-02

ASN Intelligence API for production workflows

Use ASN data for AS15120 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
198.190.160.0/24	AS15120	Rockford Health System	Rockford Health System	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:       15120
ASName:         RHS-AS
ASHandle:       AS15120
RegDate:        2011-12-02
Updated:        2011-12-02
Comment:        http://www.rhsnet.org    
Ref:            https://rdap.arin.net/registry/autnum/15120


OrgName:        Rockford Health System
OrgId:          RHS-50
Address:        2400 North Rockton Avenue
City:           Rockford
StateProv:      IL
PostalCode:     61103
Country:        US
RegDate:        2005-07-20
Updated:        2020-08-17
Ref:            https://rdap.arin.net/registry/entity/RHS-50


OrgNOCHandle: CSE59-ARIN
OrgNOCName:   Seymour, Chris 
OrgNOCPhone:  +1-815-971-4342 
OrgNOCEmail:  cseymour@mhemail.org
OrgNOCRef:    https://rdap.arin.net/registry/entity/CSE59-ARIN

OrgRoutingHandle: DAVID383-ARIN
OrgRoutingName:   David, S. 
OrgRoutingPhone:  +1-815-971-5217 
OrgRoutingEmail:  fterry@mhemail.org
OrgRoutingRef:    https://rdap.arin.net/registry/entity/DAVID383-ARIN

OrgDNSHandle: DAVID383-ARIN
OrgDNSName:   David, S. 
OrgDNSPhone:  +1-815-971-5217 
OrgDNSEmail:  fterry@mhemail.org
OrgDNSRef:    https://rdap.arin.net/registry/entity/DAVID383-ARIN

OrgAbuseHandle: DAVID383-ARIN
OrgAbuseName:   David, S. 
OrgAbusePhone:  +1-815-971-5217 
OrgAbuseEmail:  fterry@mhemail.org
OrgAbuseRef:    https://rdap.arin.net/registry/entity/DAVID383-ARIN

OrgTechHandle: CSE59-ARIN
OrgTechName:   Seymour, Chris 
OrgTechPhone:  +1-815-971-4342 
OrgTechEmail:  cseymour@mhemail.org
OrgTechRef:    https://rdap.arin.net/registry/entity/CSE59-ARIN

OrgAbuseHandle: CSE59-ARIN
OrgAbuseName:   Seymour, Chris 
OrgAbusePhone:  +1-815-971-4342 
OrgAbuseEmail:  cseymour@mhemail.org
OrgAbuseRef:    https://rdap.arin.net/registry/entity/CSE59-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
AS7029	Windstream Communications LLC	US

Upstreams

AS Number	Description	Country
AS33491	Comcast Cable Communications, LLC	US
AS7029	Windstream Communications LLC	US