ASN AS55209 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS55209?

AS55209 is listed under Hackensack University 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.

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AS55209 Hackensack University Medical Center

ASN Lookup Tool

Hackensack University Medical Center hmhn.org

US 4 Routes

AS Data

AS55209

AS55209 – Hackensack University Medical Center

AS Number	55209
AS Name	HACKENSACKUMC
Organization	Hackensack University Medical Center (humc-4)
Country	US
Website	hmhn.org
Number of IPv4 Routes	4
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2013-04-22

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Use ASN data for AS55209 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
8.27.78.0/24	AS55209	Hackensack University Medical Center	Level 3 Parent, LLC	256
198.148.152.0/24	AS55209	Hackensack University Medical Center	Hackensack University Medical Center	256
24.38.86.0/24	AS55209	Hackensack University Medical Center	HACKENSACK UNIVERSITY	256
198.148.153.0/24	AS55209	Hackensack University Medical Center	Hackensack University 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:       55209
ASName:         HACKENSACKUMC
ASHandle:       AS55209
RegDate:        2013-04-22
Updated:        2013-04-22
Ref:            https://rdap.arin.net/registry/autnum/55209


OrgName:        Hackensack University Medical Center
OrgId:          HUMC-4
Address:        499 Thornall Street
City:           Edison
StateProv:      NJ
PostalCode:     08837
Country:        US
RegDate:        2012-11-08
Updated:        2023-04-03
Ref:            https://rdap.arin.net/registry/entity/HUMC-4


OrgAbuseHandle: HAESL-ARIN
OrgAbuseName:   Haesloop, John 
OrgAbusePhone:  +1-732-897-7200 
OrgAbuseEmail:  john.haesloop@hmhn.org
OrgAbuseRef:    https://rdap.arin.net/registry/entity/HAESL-ARIN

OrgRoutingHandle: TORRE7-ARIN
OrgRoutingName:   Torre, Dennis 
OrgRoutingPhone:  +1-732-897-7200 
OrgRoutingEmail:  dennis.torre@hmhn.org
OrgRoutingRef:    https://rdap.arin.net/registry/entity/TORRE7-ARIN

OrgTechHandle: TORRE7-ARIN
OrgTechName:   Torre, Dennis 
OrgTechPhone:  +1-732-897-7200 
OrgTechEmail:  dennis.torre@hmhn.org
OrgTechRef:    https://rdap.arin.net/registry/entity/TORRE7-ARIN

OrgNOCHandle: HAESL-ARIN
OrgNOCName:   Haesloop, John 
OrgNOCPhone:  +1-732-897-7200 
OrgNOCEmail:  john.haesloop@hmhn.org
OrgNOCRef:    https://rdap.arin.net/registry/entity/HAESL-ARIN

OrgAbuseHandle: TORRE7-ARIN
OrgAbuseName:   Torre, Dennis 
OrgAbusePhone:  +1-732-897-7200 
OrgAbuseEmail:  dennis.torre@hmhn.org
OrgAbuseRef:    https://rdap.arin.net/registry/entity/TORRE7-ARIN

OrgRoutingHandle: HAESL-ARIN
OrgRoutingName:   Haesloop, John 
OrgRoutingPhone:  +1-732-897-7200 
OrgRoutingEmail:  john.haesloop@hmhn.org
OrgRoutingRef:    https://rdap.arin.net/registry/entity/HAESL-ARIN

OrgDNSHandle: HAESL-ARIN
OrgDNSName:   Haesloop, John 
OrgDNSPhone:  +1-732-897-7200 
OrgDNSEmail:  john.haesloop@hmhn.org
OrgDNSRef:    https://rdap.arin.net/registry/entity/HAESL-ARIN

OrgDNSHandle: TORRE7-ARIN
OrgDNSName:   Torre, Dennis 
OrgDNSPhone:  +1-732-897-7200 
OrgDNSEmail:  dennis.torre@hmhn.org
OrgDNSRef:    https://rdap.arin.net/registry/entity/TORRE7-ARIN

OrgAbuseHandle: NETWO7121-ARIN
OrgAbuseName:   Network Engineering
OrgAbusePhone:  +1-732-897-7200 
OrgAbuseEmail:  dgitnetworkengineering@hmhn.org
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO7121-ARIN

OrgNOCHandle: NETWO7121-ARIN
OrgNOCName:   Network Engineering
OrgNOCPhone:  +1-732-897-7200 
OrgNOCEmail:  dgitnetworkengineering@hmhn.org
OrgNOCRef:    https://rdap.arin.net/registry/entity/NETWO7121-ARIN

OrgTechHandle: NETWO7121-ARIN
OrgTechName:   Network Engineering
OrgTechPhone:  +1-732-897-7200 
OrgTechEmail:  dgitnetworkengineering@hmhn.org
OrgTechRef:    https://rdap.arin.net/registry/entity/NETWO7121-ARIN

OrgTechHandle: HAESL-ARIN
OrgTechName:   Haesloop, John 
OrgTechPhone:  +1-732-897-7200 
OrgTechEmail:  john.haesloop@hmhn.org
OrgTechRef:    https://rdap.arin.net/registry/entity/HAESL-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

{
  "status" : true,
  "whois_server" : "whois.arin.net",
  "aut_nums" : [ {
    "aut_num" : "55209",
    "as_handle" : "AS55209",
    "as_name" : "HACKENSACKUMC",
    "admin_contacts" : [ "HAESL-ARIN", "TORRE7-ARIN" ],
    "tech_contacts" : [ "TORRE7-ARIN", "TORRE7-ARIN", "HAESL-ARIN", "NETWO7121-ARIN", "HAESL-ARIN" ],
    "abuse_contacts" : [ "HAESL-ARIN", "TORRE7-ARIN", "NETWO7121-ARIN" ],
    "date_created" : "2013-04-22",
    "date_updated" : "2013-04-22",
    "source" : "https://rdap.arin.net/registry/autnum/55209"
  } ],
  "organization" : {
    "handle" : "HUMC-4",
    "name" : "Hackensack University Medical Center",
    "address" : [ "499 Thornall Street", "Edison", "NJ", "08837", "US" ],
    "street" : "Thornall Street",
    "city" : "Edison",
    "state" : "NJ",
    "zip_code" : "08837",
    "country" : [ "US" ],
    "date_created" : "2012-11-08",
    "date_updated" : "2023-04-03",
    "source" : "https://rdap.arin.net/registry/entity/HUMC-4",
    "addressCountry" : "US"
  },
  "administrative_contacts" : [ {
    "handle" : "HAESL-ARIN",
    "name" : "Haesloop, John",
    "email" : [ "john.haesloop@hmhn.org" ],
    "phone" : [ "+1-732-897-7200" ],
    "source" : "https://rdap.arin.net/registry/entity/HAESL-ARIN"
  }, {
    "handle" : "TORRE7-ARIN",
    "name" : "Torre, Dennis",
    "email" : [ "dennis.torre@hmhn.org" ],
    "phone" : [ "+1-732-897-7200" ],
    "source" : "https://rdap.arin.net/registry/entity/TORRE7-ARIN"
  } ],
  "technical_contacts" : [ {
    "handle" : "TORRE7-ARIN",
    "name" : "Torre, Dennis",
    "email" : [ "dennis.torre@hmhn.org" ],
    "phone" : [ "+1-732-897-7200" ],
    "source" : "https://rdap.arin.net/registry/entity/TORRE7-ARIN"
  }, {
    "handle" : "HAESL-ARIN",
    "name" : "Haesloop, John",
    "email" : [ "john.haesloop@hmhn.org" ],
    "phone" : [ "+1-732-897-7200" ],
    "source" : "https://rdap.arin.net/registry/entity/HAESL-ARIN"
  }, {
    "handle" : "NETWO7121-ARIN",
    "name" : "Network Engineering",
    "email" : [ "dgitnetworkengineering@hmhn.org" ],
    "phone" : [ "+1-732-897-7200" ],
    "source" : "https://rdap.arin.net/registry/entity/NETWO7121-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "HAESL-ARIN",
    "name" : "Haesloop, John",
    "email" : [ "john.haesloop@hmhn.org" ],
    "phone" : [ "+1-732-897-7200" ],
    "source" : "https://rdap.arin.net/registry/entity/HAESL-ARIN"
  }, {
    "handle" : "TORRE7-ARIN",
    "name" : "Torre, Dennis",
    "email" : [ "dennis.torre@hmhn.org" ],
    "phone" : [ "+1-732-897-7200" ],
    "source" : "https://rdap.arin.net/registry/entity/TORRE7-ARIN"
  }, {
    "handle" : "NETWO7121-ARIN",
    "name" : "Network Engineering",
    "email" : [ "dgitnetworkengineering@hmhn.org" ],
    "phone" : [ "+1-732-897-7200" ],
    "source" : "https://rdap.arin.net/registry/entity/NETWO7121-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS1436	Meridian Health System	US
AS7018	AT&T Enterprises, LLC	US
AS3356	Level 3 Parent, LLC	US
AS54004	Cablevision Lightpath LLC	US

Upstreams

AS Number	Description	Country
AS1436	Meridian Health System	US
AS7018	AT&T Enterprises, LLC	US
AS3356	Level 3 Parent, LLC	US
AS54004	Cablevision Lightpath LLC	US